| H: | ELECTRICITY | |
| H04: | ELECTRIC COMMUNICATION TECHNIQUE | |
| H04B: | TRANSMISSION (transmission systems for measured values, control or similar signals G08C; coding, decoding, code conversion, in general H03M; broadcast communication H04H; multiplex systems H04J; secret communication H04K; transmission of digital information H04L) | |
| H04B1/00: | Details of transmission systems, not covered by a single one of groups H04B3/00 to H04B13/00 ; Details of transmission systems not characterised by the medium used for transmission (tuning resonant circuits H03J) | |
| H04B1/00D: | . Software-defined radio [SDR systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain ] | |
| H04B1/00D2: | . . wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage | |
| H04B1/00D2C: | . . . Channel filtering, i.e. selecting a frequency channel within the SDR system multiplexing of multicarrier modulation signals being represented by different frequencies H04L5/06; multiplexing of multicarrier modulation signals H04L5/02Q | |
| H04B1/00D2D: | . . . using DSP [Digital Signal Processor quadrature modulation and demodulation] | |
| H04B1/00D2F: | . . . Digital filtering H04B1/00D2C takes precedence; digital filters per se H03H17/00 | |
| H04B1/00D2R: | . . . Decimation, i.e. data rate reduction techniques H04B1/00D2S takes precedence | |
| H04B1/00D2S: | . . . using a sampling rate lower than twice the highest frequency component of the sampled signal for demodulation of angle-modulated signals H03D3/00B | |
| H04B1/00D6: | . . wherein the AD/DA conversion occurs at baseband stage | |
| H04B1/00D6A: | . . . with analogue quadrature frequency conversion to and from the baseband quadrature modulators and demodulators per se H03D3/00C, H03C3/40 | |
| H04B1/00D6C: | . . . Channel filtering, i.e. selecting a frequency channel within a software radio system multiplexing of multicarrier modulation signals being represented by different frequencies H04L5/06; multiplexing of multicarrier modulation signals H04L5/02Q | |
| H04B1/00D6D: | . . . using DSP [Digital Signal Processor quadrature modulation and demodulation] | |
| H04B1/00D6F: | . . . Digital filtering H04B1/00D6C takes precedence; digital filters per se H03H17/00 | |
| H04B1/00D6R: | . . . Decimation, i.e. data rate reduction techniques | |
| H04B1/00M: | . [N: adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges] | |
| H04B1/00M2: | . . [N: with common antenna for more than one band] | |
| H04B1/00M2D: | . . . [N: using diplexing or multiplexing filters for selecting the desired band] | |
| H04B1/00M2S: | . . . [N: using switches for selecting the desired band (H04B1/00M2D takes preference)] | |
| H04B1/00M4: | . . [N: with separate antennas for the more than one band (H04B1/00M2 takes precedence)] | |
| H04B1/00M6: | . . [N: with one or more circuit blocks in common for different bands] | |
| H04B1/00M6C: | . . . [N: using a common intermediate frequency for more than one band (H04B1/00M6D takes precedence)] | |
| H04B1/00M6D: | . . . [N: using different intermediate frequencied for the different bands] | |
| H04B1/00M6D2: | . . . . [N: with a common intermediate frequency amplifier for the different intermediate frequencies, e.g. when using switched intermediate frequency filters] | |
| H04B1/00M6L: | . . . [N: with a common local oscillator for more than one band] | |
| H04B1/00M6L2: | . . . . [N: where one band is the image frequency band of the other and the band selection is done by image rejection] | |
| H04B1/00M6L4: | . . . . [N: using a first intermediate frequency higher that the highest of any band received] | |
| H04B1/00M6L4A: | . . . . . [N: using a wideband front end] | |
| H04B1/00M8: | . . [N: where a full band is frequency converted into another full band] | |
| H04B1/02: | . Transmitters | |
| H04B1/03: | . . Constructional details, e.g. casings, housings adapted for airplanes B64D | |
| H04B1/034: | . . . Portable transmitters distress beacons G01S1/68; means for indicating the location of accidentally buried persons A63B29/02B | |
| H04B1/034B: | . . . . to be carried on the body | |
| H04B1/034H: | . . . . Hand-held transmitters | |
| H04B1/036: | . . . Cooling arrangements | |
| H04B1/04: | . . Circuits | |
| H04B1/04C: | . . . Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages matching circuits in general H03H | |
| H04B1/04F: | . . . Fault detection or indication H04B1/04P takes precedence | |
| H04B1/04L: | . . . with means for limiting noise, interference or distortion H04B1/04P takes precedence | |
| H04B1/04P: | . . . Transmitters with multiple parallel paths | |
| H04B1/06: | . Receivers | |
| H04B1/69U: | . . using ultrawideband techniques[N0503] | |
| H04B1/69U1: | . . . [N: Signal aspects] | |
| H04B1/69U1A: | . . . . pulse shape (in general, H04L25/03E1)[N0503] | |
| H04B1/69U1C: | . . . . data mapping[N0503] | |
| H04B1/69U3: | . . . [N: Transmitter aspects] | |
| H04B1/69U3A: | . . . . pulse generation (in general, H04L25/03E1)[N0503] | |
| H04B1/69U5: | . . . [N: Receiver aspects] | |
| H04B1/69U5A: | . . . . synchronisation[N0503] | |
| H04B1/69U7: | . . . interference related aspects[N0503] | |
| H04B1/08: | . . Constructional details, e.g. cabinet | |
| H04B1/08M: | . . . to be used in vehicles H04B1/08P takes precedence; holding or mounting accessories B60R11/02 | |
| H04B1/08P: | . . . Portable receivers | |
| H04B1/08P2: | . . . . with parts of the receiver detachable or collapsible | |
| H04B1/10: | . . Means associated with receiver for limiting or suppressing noise or interference induced by transmission interference reduction in spread spectrum systems H04B1/707F; equalising on HF or IF H04B7/005; diversity systems H04B7/02; elimination of image frequencies H03D7/18; noise suppression by control of amplification H03G3/00, H03G5/00, H03G7/00; squelching H03G3/26, H03G3/34 | |
| H04B1/10B: | . . . Placing the antenna at a place where the noise level is low and using a noise-free transmission line between the antenna and the receivers screened aerials H01Q7/04; feeders for aerials H01Q9/00 | |
| H04B1/10C: | . . . noise filters connected between the power supply and the receiver suppression or limitation of noise from electric apparatus H04B15/00; demodulation H03D; ripple filters H02M1/14; filters in general 95G, H03H; power supplies H04B1/16A | |
| H04B1/10E: | . . . assessing signal quality or detecting noise/interference for the received signal | |
| H04B1/10E2: | . . . . with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters H04B1/12A takes precedence; filter circuits H03H | |
| H04B1/10M: | . . . Reduction of multipath noise by equalising H04B7/005 | |
| H04B1/10S: | . . . by improving strong signal performance of the receiver when strong unwanted signals are present at the receiver input | |
| H04B1/12: | . . . Neutralising, balancing, or compensation arrangements balancing ripple filters H04B15/00B, H02M1/14B | |
| H04B1/12A: | . . . . using adaptive balancing or compensation means adaptive filter circuits and algorithms H03H | |
| H04B1/12A2: | . . . . . having multiple inputs, e.g. auxiliary antenna for receiving interfering signal aerials in general H01Q | |
| H04B1/14: | . . . Automatic detuning arrangements | |
| H04B1/16: | . . Circuits demodulators H03D | |
| H04B1/16A: | . . . Supply circuits converters 92P, 92Q, H02M; filters therefor H02M1/14; voltage stabilisers G05F1/46 | |
| H04B1/16A2: | . . . . Switching on; Switching off, e.g. remotely battery saving circuits associated with selective call operation H04Q7/18B; details of power consumption reduction in a PLL, H03L7/08C, H03L7/14, T03L207/08, T03L207/18; muting amplifiers by gain control see H03G3/34 | |
| H04B1/16A2A: | . . . . . according to available power supply, e.g. switching off when a low battery condition is detected[N0008] | |
| H04B1/16A2A2: | . . . . . . Switching to a backup power supply[N0008] | |
| H04B1/16A2P: | . . . . . Switching on or off only a part of the circuit blocks[N0008] | |
| H04B1/16A2P2: | . . . . . . with sequential power up of successive circuit blocks, e.g. switching on local oscillator before RF or mixer stages[N0008] | |
| H04B1/16A2P4: | . . . . . . with sequential power down of successive circuit blocks (H04B1/16A2P2 takes precedence)[N0008] | |
| H04B1/16A2P6: | . . . . . . disabling the clock oscillator of the digital controller of the receiver (for data processing equipment see G06F1/32, G06F1/08)[N0008] | |
| H04B1/16A2P6R: | . . . . . . . reducing the clock frequency of the clock oscillator (H04B1/16A2P6S takes precedence)[N0008] | |
| H04B1/16A2P6S: | . . . . . . . having a subcontroller with low clock frequency switching on or off a main controller with high clock frequency[N0008] | |
| H04B1/16A2S: | . . . . . dependent on the presence of a received signal[N0008] | |
| H04B1/16A2S10: | . . . . . . according to the signal strength[N0008] | |
| H04B1/16A2S2: | . . . . . . where the signal is a wanted signal, e.g. a pilot signal (H04B1/16A2S6 takes precedence)[N0008] | |
| H04B1/16A2S2A: | . . . . . . . according to average transmission channel activity[N0008] | |
| H04B1/16A2S4: | . . . . . . where the signal is an unwanted signal, e.g. interference or idle signal[N0008] | |
| H04B1/16A2S6: | . . . . . . where the signal is a shutdown command[N0008] | |
| H04B1/16A2S8: | . . . . . . when no transmission is received, e.g. out of range of the transmitter[N0008] | |
| H04B1/16A2T: | . . . . . dependent on the time of day, e.g. according to expected transmission activity[N0008] | |
| H04B1/16A4: | . . . . using tubes | |
| H04B1/16B: | . . . Special arrangements for the reduction of the damping of resonant circuits of receivers amplifiers H03F; negative impedance networks for line transmission systems H04B3/16 | |
| H04B1/16D: | . . . Special circuits to enhance selectivity of receivers not otherwise provided for (resonant circuits H03H) | |
| H04B1/16E: | . . . adapted for the reception of stereophonic signals | |
| H04B1/16E2: | . . . . Detection of the presence of stereo signals and pilot signal regeneration | |
| H04B1/16E4: | . . . . Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels | |
| H04B1/16E4M: | . . . . . of the demodulated composite stereo signal | |
| H04B1/16E4M2: | . . . . . . of the sum or difference signal | |
| H04B1/16E4M4: | . . . . . . of the decoded left or right stereo channel | |
| H04B1/16E6: | . . . . using companding of the stereo difference signal, e.g. FMX volume compression or expansion in amplifiers H03G7/00 | |
| H04B1/18: | . . . Input circuits, e.g. for coupling to an aerial or a transmission line | |
| H04B1/20: | . . . for coupling gramophone pick-up, recorder output, or microphone to receiver, e.g. for Hi-Fi systems or audio/video combinations constructional details for associated working of receivers and recording devices G11B31/00B; for television signals only H04N5/00 | |
| H04B1/20B: | . . . . by remote control | |
| H04B1/20C: | . . . . with control bus for exchanging commands between units | |
| H04B1/20E: | . . . . with an audio or audio/video bus for signal distribution H04B1/20C takes precedence | |
| H04B1/22: | . . . for receivers in which no local oscillation is generated | |
| H04B1/24: | . . . . the receiver comprising at least one semiconductor device having three or more electrodes | |
| H04B1/26: | . . . for superheterodyne receivers | |
| H04B1/28: | . . . . the receiver comprising at least one semiconductor device having three or more electrodes | |
| H04B1/30: | . . . for homodyne or synchrodyne receivers | |
| H04B1/30B: | . . . . for single sideband receivers demodulator circuits H03D1/24 | |
| H04B1/38: | . Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving construction of portable transceivers H04B1/034; specially adapted to be fitted into airplanes B64D43/00; paging systems G08B3/10; traffic between a small number of stations with amplifiers or loudspeakers H04M9/00A; selecting arrangements for radio-calling systems H04Q7/00; wireless communication networks H04W | |
| H04B1/38B: | . . with built-in auxiliary receivers | |
| H04B1/38C: | . . Mechanical arrangements for accommodating identification devices e.g. cards, chips; with connectors for programming identification devices | |
| H04B1/38M: | . . for being used in vehicles H04B1/38P takes precedence; holding or mounting accessories B60R11/02 | |
| H04B1/38P: | . . Portable transceivers | |
| H04B1/38P10: | . . . Arrangements for carrying or protecting transceivers | |
| H04B1/38P2: | . . . Hand-held transceivers | |
| H04B1/38P2E: | . . . . arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use means for shaping the antenna pattern H01Q1/24A1C | |
| H04B1/38P4: | . . . Transceivers carried on the body, e.g. in helmets | |
| H04B1/38P6: | . . . Arrangements for converting portable transceivers for other use, e.g. fixed or mobile use | |
| H04B1/38P8: | . . . Arrangements for mounting batteries or battery chargers | |
| H04B1/40: | . . Circuits | |
| H04B1/40A: | . . . for selecting or indicating operating mode | |
| H04B1/40C: | . . . using the same oscillator for generating the transmitter frequency as well as the receiver local oscillator frequency | |
| H04B1/40C2: | . . . . with multiple discrete channels | |
| H04B1/40C4: | . . . . with more than one transmission mode, e.g. analog and digital modes | |
| H04B1/40C6: | . . . . the transmitter oscillator frequency being identical to the receiver local oscillator frequency | |
| H04B1/44: | . . . Transmit/receive switching | |
| H04B1/46: | . . . . by voice-frequency signals; by pilot signals echo suppression H04B3/20 | |
| H04B1/48: | . . . . in circuit for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter | |
| H04B1/50: | . . . using different frequencies for the two directions of communication | |
| H04B1/52: | . . . . Hybrid arrangements, i.e. for transition from single-path two-way transmission to single transmission on each of two path, or vice-versa multiport networks H03H7/46; microwave multiplexers H01P1/213 | |
| H04B1/52L: | . . . . . with means for reducing leakage of transmitter signal into the receiver for repeater stations H04B7/155B | |
| H04B1/54: | . . . using the same frequency for both directions of communication | |
| H04B1/56: | . . . . with provision for simultaneous communication in both directions | |
| H04B1/58: | . . . . Hybrid arrangements, i.e. for transition from single-path two-way transmission to single transmission on each of two paths, or vice-versa multiport networks H03H7/48; for two-way amplifiers H03F3/62; in multiplex communication H04J1/10; balance/unbalance networks H03H7/42, H03H11/32; construction of transformers 95G2, H01F; conjugate coupling devices of the waveguide type H01P5/16 | |
| H04B1/58A: | . . . . . using a transformer | |
| H04B1/58A1: | . . . . . . with automatic balancing | |
| H04B1/58B: | . . . . . using a bridge network | |
| H04B1/58B1: | . . . . . . with automatic balancing | |
| H04B1/58C: | . . . . . using an electronic circuit | |
| H04B1/58D: | . . . . . using opto-couplers light transmission systems H04B10/00 | |
| H04B1/58E: | . . . . . using sampling gates | |
| H04B1/59: | . Responders; Transponders | |
| H04B1/60: | . Supervising unattended repeaters | |
| H04B1/62: | . for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio for optical transmitters H04B10/155L | |
| H04B1/64: | . . Volume compression or expansion arrangements for amplifiers H03G7/00 | |
| H04B1/66: | . for reducing bandwidth of signals | |
| H04B1/66B: | . . using a time/frequency relationship, e.g. time compression or expansion | |
| H04B1/66M: | . . using psychoacoustic properties of the ear, e.g. masking effect | |
| H04B1/66S: | . . using a division in frequency subbands for TV signals H04N7/26H | |
| H04B1/68: | . for wholly or partially suppressing the carrier or one side band or by using special modulation methods modulator circuits H03C1/52, H03C1/60; single sideband receivers H04B1/30B; for data transmission H04L27/02 | |
| H04B1/69: | . Spread spectrum techniques | |
| H04B1/692: | . . Hybrid techniques using combinations of two or more spread spectrum techniques | |
| H04B1/707: | . . using direct sequence modulation | |
| H04B1/7073: | . . . Synchronisation aspects | |
| H04B1/7073A: | . . . . Code identification H04B1/7083 takes precedence | |
| H04B1/7075: | . . . . with code phase acquisition | |
| H04B1/7075A: | . . . . . using partial detection H04B1/7075L takes precedence | |
| H04B1/7075A1: | . . . . . . Partial correlation | |
| H04B1/7075A3: | . . . . . . Partial phase search | |
| H04B1/7075C: | . . . . . Setting of search window, i.e. range of code offsets to be searched H04B1/7075L takes precedence | |
| H04B1/7075E: | . . . . . Setting of lock conditions, e.g. threshold | |
| H04B1/7075G: | . . . . . Jumping within the code, i.e. masking or slewing H04B1/7075L takes precedence | |
| H04B1/7075J: | . . . . . with increased resolution, i.e. higher than half a chip H04B1/7075L takes precedence | |
| H04B1/7075L: | . . . . . Multimode search, i.e. using multiple search strategies | |
| H04B1/7077: | . . . . . Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation | |
| H04B1/7077A: | . . . . . . Multi-dwell schemes, i.e. multiple accumulation times | |
| H04B1/707A: | . . . with code acquisition[N9412] | |
| H04B1/707A1: | . . . . using partial detection (H04B1/707A15 takes precedence)[N0209] | |
| H04B1/707A11: | . . . . Code identification[N0209] | |
| H04B1/707A13: | . . . . with increased resolution, i.e. higher than half a chip (H04B1/707A15 takes precedence)[N0209] | |
| H04B1/707A15: | . . . . Multimode search, i.e. using multiple search strategies[N0209] | |
| H04B1/707A1A: | . . . . . partial correlation[N0209] | |
| H04B1/707A1C: | . . . . . partial phase search[N0209] | |
| H04B1/707A3: | . . . . Multistage acquisition (H04B1/707A15 takes precedence)[N0209] | |
| H04B1/707A3A: | . . . . . Multidwell schemes, i.e. multiple accumulation times[N0209] | |
| H04B1/707A3C: | . . . . . Parallel schemes[N0209] | |
| H04B1/707A5: | . . . . Setting of search window, i.e. range of code offsets to be searched (H04B1/707A15 takes precedence)[N0209] | |
| H04B1/707A7: | . . . . Setting of lock conditions, e.g. threshold[N0209] | |
| H04B1/707A9: | . . . . Masking/slewing, i.e. jumping within the code (H04B1/707A15 takes precedence)[N0209] | |
| H04B1/707B: | . . . using a code tracking loop, e.g. a delay locked loop[N9412] | |
| H04B1/707C: | . . . with demodulation by means of convolvers, e.g. of the SAW type SAW convolvers in general G06G7/195 | |
| H04B1/707D: | . . . with demodulation by means of matched filters[N9412] | |
| H04B1/707E: | . . . with asynchronous demodulation, i.e. not requiring code synchronisation | |
| H04B1/707F: | . . . Interference-related aspects (arrangements of adaptive shaping networks H04L25/03)[N9909] | |
| H04B1/707F1: | . . . . the interference being narrowband[N9909] | |
| H04B1/707F1E: | . . . . . with estimation filters[N9909] | |
| H04B1/707F1T: | . . . . . with transform to frequency domain[N9909] | |
| H04B1/707F2: | . . . . the interference being multiple access interference[N9909] | |
| H04B1/707F2J: | . . . . . using joint detection techniques, e.g. linear detectors[N9909] | |
| H04B1/707F2J1: | . . . . . . using decorrelation matrix[N9909] | |
| H04B1/707F2J2: | . . . . . . using minimum mean squared error (MMSE) detector[N9909] | |
| H04B1/707F2J3: | . . . . . . using maximum-likelihood sequence estimation (MLSE)[N9909] | |
| H04B1/707F2S: | . . . . . using subtractive interference cancellation[N9909] | |
| H04B1/707F2S1: | . . . . . . Successive interference cancellation[N9909] | |
| H04B1/707F2S2: | . . . . . . Parallel interference cancellation[N9909] | |
| H04B1/707F3: | . . . . the interference being multi path interference, e.g. RAKE receivers[N9909] | |
| H04B1/708: | . . . . . Parallel implementation | |
| H04B1/7083: | . . . . Cell search, e.g. using a three-step approach | |
| H04B1/7085: | . . . . using a code tracking loop, e.g. a delay-locked loop | |
| H04B1/7087: | . . . . Carrier synchronisation aspects | |
| H04B1/709: | . . . Correlator structure | |
| H04B1/7093: | . . . . Matched filter type | |
| H04B1/7095: | . . . . Sliding correlator type | |
| H04B1/7097: | . . . Interference-related aspects | |
| H04B1/71: | . . . . the interference being narrowband interference | |
| H04B1/7103: | . . . . the interference being multiple access interference | |
| H04B1/7105: | . . . . . Joint detection techniques, e.g. linear detectors | |
| H04B1/7105A: | . . . . . . using decorrelation matrix | |
| H04B1/7105C: | . . . . . . using minimum mean squared error [MMSE detector] | |
| H04B1/7105E: | . . . . . . using maximum-likelihood sequence estimation [MLSE ] | |
| H04B1/7107: | . . . . . Subtractive interference cancellation | |
| H04B1/7107A: | . . . . . . Successive interference cancellation | |
| H04B1/7107B: | . . . . . . Parallel interference cancellation | |
| H04B1/711: | . . . . the interference being multi-path interference | |
| H04B1/7113: | . . . . . Determination of path profile | |
| H04B1/7115: | . . . . . Constructive combining of multi-path signals, i.e. RAKE receivers | |
| H04B1/7117: | . . . . . . Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers | |
| H04B1/712: | . . . . . . Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop | |
| H04B1/713: | . . using frequency hopping | |
| H04B1/7136: | . . . Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform | |
| H04B1/713C: | . . . Arrangements for generation of hop frequencies[N0107] | |
| H04B1/713D: | . . . Arrangements for generation of hop sequences[N0107] | |
| H04B1/713F: | . . . Interference related aspects[N0107] | |
| H04B1/713S: | . . . Arrangements for sequence synchronisation[N0107] | |
| H04B1/7143: | . . . Arrangements for generation of hop patterns | |
| H04B1/715: | . . . Interference-related aspects | |
| H04B1/7156: | . . . Arrangements for sequence synchronisation | |
| H04B1/7163: | . . using impulse radio | |
| H04B1/7163A: | . . . Signal aspects H04B1/717A and H04B1/7176 take precedence | |
| H04B1/7163C: | . . . Transmitter aspects H04B1/717C takes precedence | |
| H04B1/7163E: | . . . Receiver aspects H04B1/7183 takes precedence | |
| H04B1/717: | . . . Pulse-related aspects | |
| H04B1/7176: | . . . Data mapping, e.g. modulation | |
| H04B1/717A: | . . . . Pulse shape in general H04L25/03E1 | |
| H04B1/717C: | . . . . Pulse generation in general H04L25/03E1 | |
| H04B1/7183: | . . . Synchronisation | |
| H04B1/719: | . . . Interference-related aspects | |
| H04B1/71E: | . . . . . with estimation filters | |
| H04B1/71T: | . . . . . with transform to frequency domain | |
| H04B1/72: | . Circuits or components for simulating aerials, e.g. dummy aerial | |
| H04B1/74: | . for increasing reliability, e.g. using redundant or spare channels or apparatus replacing by standby devices for amplifiers H03F1/52, H03F1/54B | |
| H04B1/74B: | . . using by-passing or self-healing methods | |
| H04B1/76: | . Pilot transmitters or receivers for control of transmission or for equalising | |
| H04B3/00: | Line transmission systems | |
| H04B3/02: | . Details | |
| H04B3/03: | . . Hybrid circuits | |
| H04B3/04: | . . Control of transmission; Equalising | |
| H04B3/06: | . . . by the transmitted signal | |
| H04B3/08: | . . . . in negative-feedback path of line amplifier | |
| H04B3/10: | . . . by pilot signal | |
| H04B3/11: | . . . . using pilot wire | |
| H04B3/12: | . . . . in negative-feedback path of line amplifier | |
| H04B3/14: | . . . characterised by the equalising network used | |
| H04B3/14A: | . . . . using multiequalisers, e.g. bump, cosine, Bode | |
| H04B3/14B: | . . . . using echo-equalisers, e.g. transversal | |
| H04B3/14C: | . . . . using amplitude-frequency equalisers | |
| H04B3/14C1: | . . . . . fixed equalizers | |
| H04B3/14C2: | . . . . . variable equalisers | |
| H04B3/14D: | . . . . using phase-frequency equalisers | |
| H04B3/14D1: | . . . . . fixed equalisers | |
| H04B3/14D2: | . . . . . variable equalisers | |
| H04B3/16: | . . . characterised by the negative-impedance network used | |
| H04B3/18: | . . . . wherein the network comprises semiconductor devices | |
| H04B3/20: | . . Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other | |
| H04B3/21: | . . . using a set of bandfilters | |
| H04B3/23: | . . . using a replica of transmitted signal in the time domain, e.g. echo cancellers | |
| H04B3/23B: | . . . . Echo cancellers using readout of a memory to provide the echo replica | |
| H04B3/23C: | . . . . using phase shift, phase roll or frequency offset correction | |
| H04B3/23D: | . . . . using double talk detection | |
| H04B3/23E: | . . . . combined with adaptive equaliser | |
| H04B3/23F: | . . . . using two adaptive filters, e.g. for near end and for end echo cancelling | |
| H04B3/23T: | . . . . using initial training sequence | |
| H04B3/26: | . . Improving frequency characteristic by the use of loading coils | |
| H04B3/28: | . . Reducing interference caused by currents induced in cable sheating or armouring | |
| H04B3/30: | . . Reducing interference caused by unbalance current in a normally balanced line | |
| H04B3/32: | . . Reducing cross-talk, e.g. by compensating | |
| H04B3/34: | . . . by systematic interconnection of lenghts of cable during laying; by addition of balancing components to cable during laying | |
| H04B3/36: | . . Repeater circuits | |
| H04B3/38: | . . . for signals in two different frequency ranges transmitted in opposite directions over the same transmission path | |
| H04B3/40: | . . Artificial lines; Networks simulating a line of certain length | |
| H04B3/42: | . . Circuits for by-passing of ringing signals | |
| H04B3/44: | . . Arrangements for feeding power to a repeater along the transmission line | |
| H04B3/46: | . . Monitoring; Testing | |
| H04B3/46B: | . . . Testing group delay or phase shift, e.g. timing jitter H04B3/46 takes precedence | |
| H04B3/46C: | . . . Testing crosstalk effects | |
| H04B3/46D: | . . . Testing simultaneously attenuation and group delay or phase shift | |
| H04B3/46E: | . . . Testing echo effects or singing reducing echo effects or singing H04B3/20 | |
| H04B3/48: | . . . Testing attenuation | |
| H04B3/50: | . Systems for transmission between fixed stations via two-conductor transmission lines | |
| H04B3/52: | . Systems for transmission between fixed stations via waveguides | |
| H04B3/54: | . Systems for transmission via power distribution lines | |
| H04B3/54A: | . . the information being in digital form | |
| H04B3/54B: | . . Setting up communications; Call and signalling arrangements | |
| H04B3/54C: | . . Combination of signalling, telemetering, protection circuits for remote indication of supply or distribution network condition H02J13/00 | |
| H04B3/54D: | . . the power on the line being DC arrangements for feeding power H04B10/00P; extracting feeding power from signals H04L25/02 | |
| H04B3/56: | . . Circuits for coupling, blocking, or by-passing of signals | |
| H04B3/58: | . . Repeater circuits | |
| H04B3/60: | . Systems for communication between relatively movable stations, e.g. for communication with lift | |
| H04B5/00: | Near-field transmission systems, e.g. inductive loop type | |
| H04B5/00B: | . using a receiver structurally associated with a loudspeaker or an earphone | |
| H04B5/00C: | . using capacitive coupling | |
| H04B5/00L: | . using leaky or radiating cables, e.g. leaky coaxial cables or power lines for inductive transmission leaky cables per se H01Q13/20; for railways B61L3/22 | |
| H04B5/00P: | . Near field system adaptations | |
| H04B5/00P2: | . . for data transfer | |
| H04B5/00P4: | . . for power transfer | |
| H04B5/00P6: | . . for taking measurements, e.g. using sensor coils | |
| H04B5/00P8: | . . for isolation purposes | |
| H04B5/00R: | . for use in interrogation, identification or read/write systems record carriers G06K7/00, G06K19/00; for railways B61L3/12 | |
| H04B5/00R2: | . . in RFID [Radio Frequency Identification systems] | |
| H04B5/00R4: | . . in transponders | |
| H04B5/00W: | . using inductive coupling transformers or inductances adapted for inductive coupling H01F38/14 | |
| H04B5/00W2: | . . with antenna coils loop aerials H01Q7/00 | |
| H04B5/00W4: | . . with multiple coils at either side | |
| H04B5/00W6: | . . with one coil at each side, e.g. with primary and secondary coils | |
| H04B5/02: | . using transceiver | |
| H04B5/04: | . Calling systems, e.g. paging system | |
| H04B5/06: | . using a portable transmitter associated with a microphone | |
| H04B7/00: | Radio transmission systems, i.e. using radiation field | |
| H04B7/005: | . Control of transmission; Equalising | |
| H04B7/00B: | . Reducing depolarization effects | |
| H04B7/01: | . Reducing phase shift | |
| H04B7/015: | . Reducing echo effects | |
| H04B7/02: | . Diversity systems | |
| H04B7/02M: | . . Site diversity, e.g. macro-diversity for co-located independent aerials H04B7/04 | |
| H04B7/02M1: | . . . Cooperative use of antennas of several nodes, e.g. in coordinated multipoint or cooperative MIMO [Multiple Input Multiple Output | |
| H04B7/02M2: | . . . [N: Cooperative diversity, e.g. using fixed or mobile stations as relays (cooperative coding H04L1/00B13N, relays per se in CoMP H04B7/155M)] | |
| H04B7/02S: | . . [N: Spatial transmit diversity using a single antenna at the transmitter] | |
| H04B7/04: | . . using a plurality of spaced independent aerials | |
| H04B7/04A: | . . . [N: the mobile station comprising multiple antennas (e.g. aspects of uplink diversity)] | |
| H04B7/04B: | . . . using a plurality of beams, e.g. beam diversity | |
| H04B7/04M: | . . . Multiple input multiple output [MIMO systems] | |
| H04B7/04M1: | . . . . Feedback systems | |
| H04B7/04M1S: | . . . . . utilizing implicit feedback, e.g. steered pilot signals | |
| H04B7/04M3: | . . . . Power distribution aspects | |
| H04B7/04M3B: | . . . . . using best eigenmode, e.g. beam forming or beam steering | |
| H04B7/04M3M: | . . . . . using multiple eigenmodes | |
| H04B7/04M3M1: | . . . . . . utilizing channel inversion | |
| H04B7/04M3M3: | . . . . . . utilizing "waterfilling" technique | |
| H04B7/04M3M5: | . . . . . . utilizing uniform distribution | |
| H04B7/04M5: | . . . . Multiple user MIMO systems | |
| H04B7/04M7: | . . . . [N: Selection of precoding matrix or codebook, e.g. using matrices for antenna weighting (codebook-based design for spatial equalizers at the transmitter H04L25/03M1)] | |
| H04B7/04M7C: | . . . . . [N: taking physical layer constraints into account] | |
| H04B7/04M7C1: | . . . . . . [N: taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account] | |
| H04B7/04M7C3: | . . . . . . [N: taking special antenna structures, e.g. cross polarized antennas into account] | |
| H04B7/04M7C5: | . . . . . . [N: taking constraints in layer or codeword to antenna mapping into account] | |
| H04B7/04M7E: | . . . . . [N: Special codebook structures directed to feedback optimization] | |
| H04B7/04M7G: | . . . . . [N: Adaptive codebooks] | |
| H04B7/04M7R: | . . . . . [N: taking channel rank into account] | |
| H04B7/04S: | . . . using a plurality of sectors, e.g. sector diversity | |
| H04B7/04S1: | . . . . [N: using overlapping sectors in the same base station to implement MIMO antennas] | |
| H04B7/005B: | . . Transmitter power control arrangements in bidirectional transmission systems using information derived from reception quality, e.g. RSSI, error rate (specially adapted for satellite systems H04B7/185M6D)[C9909] | |
| H04B7/005B1: | . . . Power control algorithms[N9910] | |
| H04B7/005B1C: | . . . . Closed loop power control[N9910] | |
| H04B7/005B1H: | . . . . Open loop power control[N9910] | |
| H04B7/005B1K: | . . . . Outer and inner loops[N0009] | |
| H04B7/005B1L: | . . . . Separate analysis of uplink and downlink[N9910] | |
| H04B7/005B1L1: | . . . . . [N: Downlink power control] | |
| H04B7/005B1L2: | . . . . . [N: Uplink power control] | |
| H04B7/005B1N: | . . . . Deriving transmission power values from another channel[N0111] | |
| H04B7/005B2: | . . . Power control according to specific parameters[N9910][C0009] | |
| H04B7/005B2E: | . . . . Error rate[N9910][C0009] | |
| H04B7/005B2H: | . . . . taking into account previous information or commands[N0009] | |
| H04B7/005B2H10: | . . . . . [N:Calculation of statistics, e.g. average, variance] | |
| H04B7/005B2H2: | . . . . . [N: using past power control commands] | |
| H04B7/005B2H4: | . . . . . [N:using past power values or information] | |
| H04B7/005B2H6: | . . . . . [N:using past references to control power, e.g. look-up table] | |
| H04B7/005B2H8: | . . . . . [N:Predicting future states of the transmission] | |
| H04B7/005B2P: | . . . . Signal to interference ratio (SIR) or other parameters of the path[N9910][C0009] | |
| H04B7/005B2P10: | . . . . . [N: Taking into account interferences (H04B7/005B2P12 takes precedence)] | |
| H04B7/005B2P12: | . . . . . [N: Taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo] | |
| H04B7/005B2P14: | . . . . . [N: Taking into account received signal strength (H04B7/005B2P16 takes precedence)] | |
| H04B7/005B2P16: | . . . . . [N: Taking into account path loss] | |
| H04B7/005B2P2: | . . . . . [N: where the output power of a terminal is based on a path parameter calculated in said terminal] | |
| H04B7/005B2P4: | . . . . . [N: where the output power of a terminal is based on a path parameter sent by another terminal] | |
| H04B7/005B2P6: | . . . . . [N: where the transmission power control commands are generated on the basis of a path parameter] | |
| H04B7/005B2Q: | . . . . Transmission rate or the quality of service (QoS)[N9910][C0009] | |
| H04B7/005B2Q2: | . . . . . [N: Taking into account the quality of service QoS] | |
| H04B7/005B2Q4: | . . . . . [N: Taking into account the information rate] | |
| H04B7/005B2Q6: | . . . . . [N: Taking into account adaptive modulation and coding (AMC) scheme (AMC per se H04L1/00A)] | |
| H04B7/005B2U: | . . . . User profile, e.g. mobile speed, priority or the state of the network (e.g. standby, idle, non-transmission)[N9910][C0009] | |
| H04B7/005B2U10: | . . . . . [N: Taking into account the speed of the mobile] | |
| H04B7/005B2U12: | . . . . . [N: Power control when channel is in stand-by ] | |
| H04B7/005B2U14: | . . . . . [N: Taking into account the usage mode, e.g. hands-free, data transmission, telephone ] | |
| H04B7/005B2U2: | . . . . . [N: Power control during data packet transmission, e.g. high speed downlink packet access (HSDPA)] | |
| H04B7/005B2U4: | . . . . . [N: Power depending on the position of the mobile] | |
| H04B7/005B2U6: | . . . . . [N: Taking into account user or data type priority] | |
| H04B7/005B2U8: | . . . . . [N: Power of retransmission after error or non-acknowledgement (retransmission control protocols H04L1/18T)] | |
| H04B7/005B3: | . . . Constraints in the total amount of available power or in the power values[N9910] | |
| H04B7/005B3B: | . . . . Power control of broadcast or control channels[N0009] | |
| H04B7/005B3B2: | . . . . . [N: Power control of broadcast channels] | |
| H04B7/005B3B4: | . . . . . [N: Power control of control or pilot channels] | |
| H04B7/005B3B6: | . . . . . [N: Power control of multicast channels] | |
| H04B7/005B3M: | . . . . Power management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading[N9910][C0009] | |
| H04B7/005B3M2: | . . . . . [N: Taking into account loading or congestion level] | |
| H04B7/005B3M4: | . . . . . [N: Distributing total power among users] | |
| H04B7/005B3R: | . . . . with a discrete range or set of values, e.g. step size, ramping, offsets[N9910][C0009] | |
| H04B7/005B3R2: | . . . . . [N: Power values between minimum and maximum limits, e.g. dynamic range] | |
| H04B7/005B3R4: | . . . . . [N: Aspects of the step size] | |
| H04B7/005B4: | . . . Power control in particular situations[N9910] | |
| H04B7/005B4D: | . . . . in diversity situations[N9910] | |
| H04B7/005B4D1: | . . . . . during macrodiversity or soft handoff[N9910] | |
| H04B7/005B4D2: | . . . . . in systems with time, space, frequency or polarization diversity (for MIMO systems H04B7/04M3[N9910][C0804] | |
| H04B7/005B4G: | . . . . [N: In connection with interruption of transmission] | |
| H04B7/005B4H: | . . . . [N: In multi-hop networks, e.g. wireless relay networks] | |
| H04B7/005B4T: | . . . . at the moment of starting communication in a multiple access environment[N9910] | |
| H04B7/005B5: | . . . Signalisation aspects of the power control commands, e.g. frame structure[N0009] | |
| H04B7/005B5D: | . . . . [N: Aspects of detection and errors of TPC bits] | |
| H04B7/005B5F: | . . . . [N: Format of the TPC bits] | |
| H04B7/005B5R: | . . . . [N: Different rates of power control commands] | |
| H04B7/005B6: | . . . using AGC circuits or amplifiers (circuits for control of amplification H03G)[N0009] | |
| H04B7/06: | . . . at transmitting station, e.g. time diversity | |
| H04B7/06B: | . . . . using antenna switching H04B7/06H takes precedence; antenna beam directivity switching H01Q3/24 | |
| H04B7/06B1: | . . . . . with predefined switching scheme | |
| H04B7/06B1R: | . . . . . . Random or pseudo-random switching scheme | |
| H04B7/06B2: | . . . . . Antenna selection according to transmission parameters | |
| H04B7/06B2F: | . . . . . . using feedback from receiving side | |
| H04B7/06C: | . . . . using simultaneous transmission H04B7/06H takes precedence | |
| H04B7/06C1: | . . . . . of weighted versions of same signal | |
| H04B7/06C1B: | . . . . . . for beam forming | |
| H04B7/06C1D: | . . . . . . Diversity capabilities[N0911] | |
| H04B7/06C1F: | . . . . . . using feedback from receiving side feedback signaling for adaptive modulation/coding H04L1/00A | |
| H04B7/06C1F1: | . . . . . . . Feedback content | |
| H04B7/06C1F1A: | . . . . . . . . Auxiliary parameters, e.g. power control (PCB) or not acknowledged commands (NACK), used as feedback information | |
| H04B7/06C1F1C: | . . . . . . . . Channel coefficients, e.g. channel state information (CSI) | |
| H04B7/06C1F1D: | . . . . . . . . Diversity capabilities | |
| H04B7/06C1F1P: | . . . . . . . . Parameters other than those covered in groups H04B7/06C1F1A- H04B7/06C1F1W, e.g. channel matrix rank or transmit mode selection | |
| H04B7/06C1F1Q: | . . . . . . . . Channel quality parameters, e.g. channel quality indicator (CQI) | |
| H04B7/06C1F1W: | . . . . . . . . Antenna weights or vector/matrix coefficients | |
| H04B7/06C1F3: | . . . . . . . Feedback format | |
| H04B7/06C1F3C: | . . . . . . . . Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index (PMI) or for beam selection | |
| H04B7/06C1F3D: | . . . . . . . . Differential feedback | |
| H04B7/06C1F3R: | . . . . . . . . Feedback on request | |
| H04B7/06C1F3V: | . . . . . . . . Variable feedback | |
| H04B7/06C1F3V1: | . . . . . . . . . Variable feedback rate | |
| H04B7/06C1F3V3: | . . . . . . . . . Variable contents, e.g. long-term or short-short | |
| H04B7/06C1F5: | . . . . . . . Feedback error handling | |
| H04B7/06C1F5R: | . . . . . . . . at the receiver, e.g. antenna verification at mobile station | |
| H04B7/06C1F5T: | . . . . . . . . at the transmitter, e.g. error detection at base station | |
| H04B7/06C1F7: | . . . . . . . Feedback reduction | |
| H04B7/06C1F7C: | . . . . . . . . Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing (OFDM) | |
| H04B7/06C1F7M: | . . . . . . . . using vector or matrix manipulations | |
| H04B7/06C1R: | . . . . . . [N: Feed forward of transmit weights to the receiver] | |
| H04B7/06C2: | . . . . . of delayed versions of same signal using space-time coding H04L1/06T | |
| H04B7/06C2C: | . . . . . . [N: using different channel coding between antennas (space-time coding H04L1/06T)] | |
| H04B7/06C2D: | . . . . . . [N: using different delays between antennas] | |
| H04B7/06C2F: | . . . . . . [N: using feedback from receiving side] | |
| H04B7/06C2R: | . . . . . . [N: using random or pseudo-random delays] | |
| H04B7/06C3: | . . . . . [N: using different spreading codes between antennas (code allocation T04J11/00B4 and T04J13/00B4)] | |
| H04B7/06C4: | . . . . . [N: using space frequency diversity (space-frequency coding H04L1/06F)] | |
| H04B7/06C5: | . . . . . [N: using phase diversity (e.g. phase sweeping)] | |
| H04B7/06C6: | . . . . . [N: using different training sequences per antenna] | |
| H04B7/06H: | . . . . Hybrid systems, i.e. switching and simultaneous transmission | |
| H04B7/06H1: | . . . . . using different transmission schemes, at least one of them being a diversity transmission scheme | |
| H04B7/06H2: | . . . . . [N: using subgroups of transmit antennas] | |
| H04B7/06H2S: | . . . . . . [N: switching off a diversity branch, e.g. to save power] | |
| H04B7/06H3: | . . . . . [N: using beam selection] | |
| H04B7/06M: | . . . . [N: using spatial multiplexing] | |
| H04B7/08: | . . . at receiving station, e.g. space diversity | |
| H04B7/08B: | . . . . using antenna selection H04B7/08H takes precedence; antenna beam directivity switching H01Q3/24 | |
| H04B7/08B10: | . . . . . with delay elements in antenna paths | |
| H04B7/08B12: | . . . . . Compensation of the diversity switching process for non-uniform properties or faulty operations of the switches used in the diversity switching process | |
| H04B7/08B14: | . . . . . based on external parameters, e.g. subscriber speed or location | |
| H04B7/08B2: | . . . . . with single receiver and antenna switching H04B7/08B6 takes precedence | |
| H04B7/08B2C: | . . . . . . comparing all antennas before reception | |
| H04B7/08B2C2: | . . . . . . . during preamble or gap period | |
| H04B7/08B2R: | . . . . . . based on current reception conditions, e.g. switching to different antenna when signal level is below threshold | |
| H04B7/08B4: | . . . . . with multiple receivers and antenna path selection | |
| H04B7/08B4B: | . . . . . . selecting best antenna path | |
| H04B7/08B6: | . . . . . according to predefined selection scheme | |
| H04B7/08B8: | . . . . . with main and with auxiliary or diversity antennas | |
| H04B7/08C: | . . . . using pre-detection combining H04B7/08H takes precedence | |
| H04B7/08C2: | . . . . . Equal gain combining, only phase adjustments antenna beam scanning or forming by phase or amplitude control H01Q3/26, e.g. phased arrays | |
| H04B7/08C4: | . . . . . Weighted combining | |
| H04B7/08C4C: | . . . . . . [N: per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch (rake receivers as such H04B1/707F3)] | |
| H04B7/08C4J: | . . . . . . Joint weighting | |
| H04B7/08C4J1: | . . . . . . . using training sequences or error signal minimizing error signal H04B7/08C4J2 | |
| H04B7/08C4J2: | . . . . . . . using error minimizing algorithms, e.g. minimum mean squared error (MMSE), "cross-correlation" or matrix inversion | |
| H04B7/08C4J3: | . . . . . . . using maximum ratio combining techniques, e.g. signal-to- interference ratio (SIR), received signal strenght indication (RSS) | |
| H04B7/08C4P: | . . . . . . using weights depending on external parameters, e.g. direction of arrival (DOA), predetermined weights or beamforming | |
| H04B7/08C4T: | . . . . . . [N: receiver computing weights based on information from the transmitter] | |
| H04B7/08C4W: | . . . . . . Independent weighting, i.e. weights based on own antenna reception parameters | |
| H04B7/08H: | . . . . Hybrid systems, i.e. switching and combining | |
| H04B7/08H1: | . . . . . using different reception schemes, at least one of them being a diversity reception scheme | |
| H04B7/08H2: | . . . . . [N: using subgroups of receive antennas] | |
| H04B7/08H2S: | . . . . . . [N: switching off a diversity branch, e.g. to save power] | |
| H04B7/08H3: | . . . . . [N: using beam selection] | |
| H04B7/08P: | . . . . using post-detection diversity | |
| H04B7/08P1: | . . . . . with combination | |
| H04B7/08P2: | . . . . . with selection | |
| H04B7/08S: | . . . . [N: Space-time diversity (rake receivers H04B1/707F3; space-time decoding H04L1/06T5)] | |
| H04B7/08S1: | . . . . . [N: using different delays between antennas] | |
| H04B7/08S3: | . . . . . using beamforming per multi-path, e.g. to cope with different directions of arrival [DOA at different multi-paths] | |
| H04B7/10: | . . using a single aerial system characterised by its polarisation or directive properties, e.g. polarisation diversity, direction diversity | |
| H04B7/12: | . . Frequency-diversity systems | |
| H04B7/14: | . Relay systems | |
| H04B7/145: | . . Passive relay systems construction of passive reflectors G01S13/02A | |
| H04B7/15: | . . Active relay systems | |
| H04B7/155: | . . . Ground-based stations | |
| H04B7/155B: | . . . . Transmitting-receiving units | |
| H04B7/155C: | . . . . Relay station based processing for cell extension or control of coverage area, network planning with network coordinated processing with regard to cell extension H04W16/26; network topologies using dedicated repeater stations H04W84/04C4; terminal devices adapted for relaying to or from an other terminal H04W88/04 | |
| H04B7/155C2: | . . . . . for shadowing compensation for satellite mobile telephony service systems H04B7/185M4D | |
| H04B7/155D: | . . . . combining by calculations packets received from different stations before transmitting the combined packets as part of network coding network coding aspects for detection or prevention of errors in the information received H04L1/00B13; network traffic management with optimizing of information sizing, e.g. header compression, by using assembly and disassembly of packets H04W28/06D | |
| H04B7/155F: | . . . . Control of operation parameters of a relay station to exploit the physical medium | |
| H04B7/155F1: | . . . . . Control of relay amplifier gain amplifier gain control in general H03G3/00; gain control reducing self - or loop interference H04B7/155J3 | |
| H04B7/155F2: | . . . . . Selecting at relay station its transmit and receive resources selection of wireless resources by user or terminal H04W72/04B; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/00A2, or by allocating sub-channels H04L5/00C | |
| H04B7/155F3: | . . . . . Selecting relay station antenna mode e.g. selecting omnidirectional -, directional beams, selecting polarizations | |
| H04B7/155H: | . . . . Selecting relay station operation mode e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode | |
| H04B7/155J: | . . . . Relay station antennae loop interference reduction | |
| H04B7/155J1: | . . . . . by signal isolation e.g. isolation by frequency or by antenna pattern, or by polarization | |
| H04B7/155J3: | . . . . . by gain adjustment | |
| H04B7/155J5: | . . . . . by interference cancellation | |
| H04B7/155M: | . . . . Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path cooperative diversity H04B7/02M1 | |
| H04B7/15S: | . . . Shadowing compensation therefor (for satellite mobile telephony service systems H04B7/185M4D)[N0003] | |
| H04B7/165: | . . . . employing angle modulation | |
| H04B7/17: | . . . . employing pulse modulation, e.g. pulse code modulation | |
| H04B7/185: | . . . Space-based or airborne stations; Stations for satellite systems | |
| H04B7/185B: | . . . . Airborne stations | |
| H04B7/185B2: | . . . . . Aircraft used as relay or high altitude atmospheric platform | |
| H04B7/185B4: | . . . . . Communications with or from aircraft, i.e. aeronautical mobile service | |
| H04B7/185B4B: | . . . . . . with satellite system used as relay, i.e. aeronautical mobile satellite service | |
| H04B7/185D: | . . . . Systems using a satellite or space-based relay H04B7/185B4B, H04B7/185F take precedence; providing specific services H04B7/185H to H04B7/185R | |
| H04B7/185D2: | . . . . . Transmission in a satellite or space-based system | |
| H04B7/185D4: | . . . . . Transmission equipment in satellites or space-based relays | |
| H04B7/185D6: | . . . . . Transmission equipment in earth stations | |
| H04B7/185D8: | . . . . . Operations control, administration or maintenance | |
| H04B7/185F: | . . . . Systems of inter linked satellites, i.e. inter satellite service for optical links between satellites H04B10/105 | |
| H04B7/185H: | . . . . Satellite systems for providing broadcast service to terrestrial stations, i.e. broadcast satellite service arrangements specially adapted for satellite broadcast receiving H04H40/90; picture transmission via satellite H04N1/00B4; television transmission via satellite H04N7/20 | |
| H04B7/185H2: | . . . . . Arrangements for data linking, networking or transporting, or for controlling an end to end session data switching networks H04L12/00 | |
| H04B7/185J: | . . . . Satellite systems for providing two-way communications service to a network of fixed stations, i.e. fixed satellite service or very small aperture terminal (VSAT) system | |
| H04B7/185M: | . . . . Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service for selecting H04Q7/00 | |
| H04B7/185M10: | . . . . . Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations | |
| H04B7/185M10B: | . . . . . . for call routing | |
| H04B7/185M12: | . . . . . Arrangements for interconnecting multiple systems data switching networks H04L12/00 | |
| H04B7/185M14: | . . . . . Arrangements for preventing unauthorised access or for providing user protection arrangements for secret or secure communication H04L9/00 | |
| H04B7/185M16: | . . . . . Arrangements for providing additional services to the basic mobile satellite telephony service | |
| H04B7/185M18: | . . . . . Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance | |
| H04B7/185M18B: | . . . . . . for satellites; for fixed or mobile stations | |
| H04B7/185M18D: | . . . . . . for operations control, administration or maintenance | |
| H04B7/185M4: | . . . . . Arrangements for managing transmission, i.e. for transporting data or a signalling message | |
| H04B7/185M4B: | . . . . . . for enhancing link reliablility, e.g. satellites diversity | |
| H04B7/185M4D: | . . . . . . Shadowing compensation therefor, e.g. by using an additional terrestrial relay | |
| H04B7/185M6: | . . . . . Arrangements for managing radio, resources, i.e. for establishing or releasing a connection | |
| H04B7/185M6B: | . . . . . . for handover of resources | |
| H04B7/185M6D: | . . . . . . for adaptation of transmission parameters, e.g. power control for detecting or preventing errors in the information received H04L1/00 | |
| H04B7/185M8: | . . . . . Arrangements for managing station mobility, i.e. for station registration or localisation | |
| H04B7/185M8B: | . . . . . . for geolocalisation of a station position fixing by direction or distance determination G01S5/00 | |
| H04B7/185M8B2: | . . . . . . . using a telephonic control signal, e.g. propagation delay variation, Doppler frequency variation, power variation, beam identification | |
| H04B7/185M8B2B: | . . . . . . . . using a telephonic control signal and a second ranging satellite determining absolute distances from a plurality of spaced points of known location G01S5/14 | |
| H04B7/185M8B4: | . . . . . . . using the position provided by an existing geolocalisation system | |
| H04B7/185M8D: | . . . . . . using a location database | |
| H04B7/185R: | . . . . Satellite systems for providing narrowband data service to fixed or mobile stations, e.g. using a minisatellite, a microsatellite for selecting H04Q7/00 | |
| H04B7/185S: | . . . . Satellite systems for providing broadband data service to individual earth stations for selecting H04Q7/00; provisions for broadband connection, H04Q11/04S2 | |
| H04B7/185S10: | . . . . . Arrangements for data transporting, e.g. for an end to end data transport or check | |
| H04B7/185S12: | . . . . . Arrangements for controlling an end to end session, i.e. for initialising, synchronising or terminating an end to end link | |
| H04B7/185S14: | . . . . . Arrangements for interconnecting multiple systems data switching networks H04L12/00 | |
| H04B7/185S16: | . . . . . Arrangements for preventing unauthorised access or for providing user protection arrangements for secret or secure communication H04L9/00 | |
| H04B7/185S24: | . . . . . Arrangements for adapting broadband applications to satellite systems | |
| H04B7/185S34: | . . . . . Arrangements for system physical machines management, i.e. for construction, operations control, administration, maintenance | |
| H04B7/185S4: | . . . . . Arrangements for data transmission on the physical system, i.e. for data bit transmission between network components | |
| H04B7/185S6: | . . . . . Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access | |
| H04B7/185S8: | . . . . . Arrangements for data networking, i.e. for data packet routing, for congestion control data switching networks H04L12/00 | |
| H04B7/19: | . . . . Earth-synchronous stations | |
| H04B7/195: | . . . . Non-synchronous stations | |
| H04B7/204: | . . . Multiple access | |
| H04B7/204B: | . . . . Spot beam multiple access | |
| H04B7/204D: | . . . . Mixed mode, TDM and FDM systems | |
| H04B7/204F: | . . . . SS-FDMA, FDMA satellite switching | |
| H04B7/204T: | . . . . SS-TDMA, TDMA satellite switching | |
| H04B7/204T2: | . . . . . Frame structure, synchronisation or frame acquisition in SS-TDMA systems | |
| H04B7/208: | . . . . Frequency-division multiple access (FDMA) | |
| H04B7/212: | . . . . Time-division multiple access (TDMA) | |
| H04B7/212A: | . . . . . Channels assignment to the different stations | |
| H04B7/212A1: | . . . . . . Variable assignment, e.g. demand assignment | |
| H04B7/212B: | . . . . . Synchronisation | |
| H04B7/212B1: | . . . . . . using a reference station | |
| H04B7/212B1A: | . . . . . . . Changing of the reference station | |
| H04B7/216: | . . . . Code division or spread-spectrum multiple access | |
| H04B7/22: | . Scatter propagation systems, e.g. ionospheric, tropospheric or meteor scatter | |
| H04B7/24: | . for communication between two or more posts | |
| H04B7/26: | . . at least one of which is mobile | |
| H04B7/26B: | . . . Arrangements for wireless physical layer control H04B7/26C takes precedence | |
| H04B7/26B2: | . . . . Arrangements for base station coverage control, e.g. by using relays in tunnels | |
| H04B7/26B4: | . . . . Arrangements for range control, e.g. by using remote antennas | |
| H04B7/26C: | . . . Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity H04B7/26D to H04B7/26T take precedence; provision for broadband connection H04Q11/04S2 | |
| H04B7/26D: | . . . using hybrid frequency-time division multiple access [FDMA-TDMA ] | |
| H04B7/26E: | . . . using hybrid code-time division multiple access [CDMA-TDMA ] | |
| H04B7/26F: | . . . using frequency division multiple access [FDMA ] | |
| H04B7/26G: | . . . using common wave | |
| H04B7/26S: | . . . using code-division multiple access [CDMA or spread spectrum multiple access [SSMA] ] | |
| H04B7/26S12: | . . . . for data rate control | |
| H04B7/26S4: | . . . . for broadband transmission | |
| H04B7/26S6: | . . . . for channel frequency control | |
| H04B7/26S8: | . . . . for logical channel control | |
| H04B7/26T: | . . . using time-division multiple access [TDMA ] | |
| H04B7/26T10: | . . . . for structure of frame, burst | |
| H04B7/26T12: | . . . . for data rate control | |
| H04B7/26T4: | . . . . for broadband transmission | |
| H04B7/26T6: | . . . . for channel frequency control | |
| H04B7/26T8: | . . . . for logical channel control | |
| H04B7/26V: | . . . Arrangements for Wireless System Synchronisation | |
| H04B7/26V2: | . . . . Arrangements for Wireless Frequency Division Multiple Access (FDMA) System Synchronisation | |
| H04B7/26V4: | . . . . Arrangements for Wireless Code-Division Multiple Access (CDMA) System Synchronisation, for code acquisition H04B1/707A, for code tracking H04B1/707B | |
| H04B7/26V6: | . . . . Arrangements for Wireless Time-Division Multiple Access (TDMA) System Synchronisation | |
| H04B7/26V6B: | . . . . . Frequency synchronisation | |
| H04B7/26V6D: | . . . . . Time synchronisation | |
| H04B7/26V6D2: | . . . . . . Synchronisation of a mobile station with one base station | |
| H04B7/26V6D4: | . . . . . . Synchronisation of a mobile station with more than one base station | |
| H04B7/26V6D6: | . . . . . . Inter base stations synchronisation | |
| H04B7/26V6D6B: | . . . . . . . Master/slave synchronisation | |
| H04B7/26V6D6D: | . . . . . . . Centralised synchronisation, i.e. using external universal time reference, e.g. by using a global positioning system (GPS) or by distributing time reference over the wireline network | |
| H04B7/26V6D6F: | . . . . . . . Over the air autonomous synchronisation, e.g. by monitoring network activity H04B7/26V6D6D takes preference | |
| H04B10/00: | Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication | |
| H04B10/00I: | . Optical interconnects, e.g. light coupled isolators, circuit board interconnections | |
| H04B10/00I2: | . . for isolation, e.g. using optocouplers[N0802] | |
| H04B10/00I4: | . . Free space interconnects, e.g. between circuit boards or chips (for coupling device aspects, see G02B6/43)[N0802] | |
| H04B10/00P: | . Arrangements for feeding power | |
| H04B10/00P1: | . . Optical power feeding, i.e. transmitting power using an optical signal[N0802] | |
| H04B10/00P2: | . . Electrical power feeding of an optical transmission system (Power feeding arrangements in general H04B3/44)[N0802] | |
| H04B10/00R: | . using redundant optical paths (protection switching in WDM systems H04J14/02P)[C0903] | |
| H04B10/00R2: | . . using multiple transmitters | |
| H04B10/02: | . Details | |
| H04B10/02A: | . . Details test | |
| H04B10/03: | . Arrangements for fault recovery | |
| H04B10/032: | . . using working and protection systems [N: (H04J14/02P takes precedence)] | |
| H04B10/035: | . . using loopbacks | |
| H04B10/038: | . . using bypasses | |
| H04B10/07: | . Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems | |
| H04B10/071: | . . using a reflected signal, e.g. using optical time-domain reflectometers [OTDRs] | |
| H04B10/073: | . . using an out-of-service signal (H04B 10/071 takes precedence) | |
| H04B10/0731: | . . . Testing or characterisation of optical devices, e.g. amplifiers | |
| H04B10/075: | . . using an in-service signal (H04B 10/071 takes precedence) | |
| H04B10/077: | . . . using a supervisory or additional signal | |
| H04B10/0771: | . . . . Fault location on the transmission path | |
| H04B10/0773: | . . . . Network aspects, e.g. central monitoring of transmission parameters | |
| H04B10/0775: | . . . . Performance monitoring and measurement of transmission parameters | |
| H04B10/0777: | . . . . Monitoring line amplifier or line repeater equipment | |
| H04B10/0779: | . . . . Monitoring line transmitter or line receiver equipment | |
| H04B10/079: | . . . using measurements of the data signal | |
| H04B10/0791: | . . . . Fault location on the transmission path | |
| H04B10/0793: | . . . . Network aspects, e.g. central monitoring of transmission parameters | |
| H04B10/0795: | . . . . Performance monitoring; Measurement of transmission parameters | |
| H04B10/07951: | . . . . . Monitoring or measuring chromatic dispersion or PMD | |
| H04B10/07953: | . . . . . Monitoring or measuring OSNR, BER or Q | |
| H04B10/07955: | . . . . . Monitoring or measuring power | |
| H04B10/07957: | . . . . . Monitoring or measuring wavelength | |
| H04B10/0797: | . . . . Monitoring line amplifier or line repeater equipment | |
| H04B10/0799: | . . . . Monitoring line transmitter or line receiver equipment | |
| H04B10/07S: | . . Prevention or detection of unauthorized access, e.g. tapping | |
| H04B10/08A: | . . . [N: Monitoring a transmission line in service] | |
| H04B10/08A1: | . . . . [N: using the data signal] | |
| H04B10/08A1F: | . . . . . [N: fault location on the transmission path] | |
| H04B10/08A1N: | . . . . . [N: network aspects, e.g. central monitoring and network management] | |
| H04B10/08A1P: | . . . . . [N: performance monitoring and measurement of transmission parameters] | |
| H04B10/08A1P1: | . . . . . . [N: monitoring and measuring chromatic dispersion or polarisation mode dispersion (PMD)] | |
| H04B10/08A1P2: | . . . . . . [N: monitoring and measuring Optical Signal-to-Noise Ratio (OSNR), Bit Error Rate (BER) or quality factor (Q)] | |
| H04B10/08A1P3: | . . . . . . [N: monitoring and measuring power] | |
| H04B10/08A1P4: | . . . . . . [N: monitoring and measuring wavelength] | |
| H04B10/08A1R: | . . . . . [N: monitoring line amplifier or line repeater equipment] | |
| H04B10/08A1T: | . . . . . [N: monitoring line transmitter or line receiver equipment] | |
| H04B10/08A2: | . . . . [N: using a supervisory signal] | |
| H04B10/08A2F: | . . . . . Fault location on the transmission path[N0707][C0903] | |
| H04B10/08A2N: | . . . . . [N: network aspects, e.g. central monitoring and network management] | |
| H04B10/08A2P: | . . . . . [N: performance monitoring and measurement of transmission parameters] | |
| H04B10/08A2R: | . . . . . [N: monitoring line amplifier or line repeater equipment] | |
| H04B10/08A2T: | . . . . . [N: monitoring line transmitter or line receiver equipment] | |
| H04B10/08A3: | . . . . [N: using a reflected signal] | |
| H04B10/08B: | . . . loss, group delay | |
| H04B10/08C: | . . . [N: Monitoring a transmission line out of service] | |
| H04B10/08C1: | . . . . [N: testing and characterisation of optical devices, e.g. amplifiers] | |
| H04B10/08R: | . . . Monitoring using a reflected signal[N9909] | |
| H04B10/08S: | . . . Prevention or detection of unauthorized access, e.g. tapping[N0903] | |
| H04B10/08T: | . . . for testing and characterisation of optical amplifiers[N0009] | |
| H04B10/10: | . Transmission through free space, e.g. through the atmosphere | |
| H04B10/105: | . . specially adapted for satellite links | |
| H04B10/10L: | . . Line of sight transmission through the atmosphere | |
| H04B10/10L1: | . . . One-way transmission[N0409] | |
| H04B10/10L2: | . . . Bidirectional transmission[N0409] | |
| H04B10/10L2C: | . . . . using a single common optical path[N0409] | |
| H04B10/10L2P: | . . . . using two distinct parallel optical paths[N0409] | |
| H04B10/10L3: | . . . Arrangements for outdoor wireless networking[N0409] | |
| H04B10/10N: | . . Indoor or near-field type systems | |
| H04B10/10N1: | . . . One-way transmission[N0010] | |
| H04B10/10N2: | . . . Bidirectional transmission[N0010] | |
| H04B10/10N3: | . . . Arrangements for wireless networking or broadcasting of information[N0010] | |
| H04B10/11: | . Arrangements specific to free-space transmission, i.e. transmission through air or vacuum | |
| H04B10/112: | . . Line-of-sight transmission over an extended range | |
| H04B10/1121: | . . . One-way transmission | |
| H04B10/1123: | . . . Bidirectional transmission | |
| H04B10/1125: | . . . . using a single common optical path | |
| H04B10/1127: | . . . . using two distinct parallel optical paths | |
| H04B10/1129: | . . . Arrangements for outdoor wireless networking of information | |
| H04B10/114: | . . Indoor or close-range type systems | |
| H04B10/1141: | . . . One-way transmission | |
| H04B10/1143: | . . . Bidirectional transmission | |
| H04B10/1149: | . . . Arrangements for indoor wireless networking of information | |
| H04B10/116: | . . . Visible light communication | |
| H04B10/118: | . . specially adapted for satellite communication | |
| H04B10/12: | . Transmission through light guides, e.g. optical fibres [N: | |
| H04B10/12C: | . . Arrangements for reducing crosstalk between optical channels and to prevent unauthorised access (in general H04K)[C1202] | |
| H04B10/12I: | . . using integrated optics (light guides of the integrated circuit kind G02B6/12; connectors for light guides G02B6/24; modulating, switching, gating in optical wave guides G02F1/00, e.g. G02F1/01C, G02F1/035, G02F1/05C, G02F1/295; integrated circuits with LEDs H01L27/15)[C1202] | |
| H04B10/12R: | . . of a radio frequency signal modulated onto an optical carrier, e.g. radio through fibre[N9509][C9605] | |
| H04B10/12R1: | . . . Optical arrangements for CATV or video distribution (adaptations of television systems for optical transmission H04N7/22)[N0802] | |
| H04B10/12R2: | . . . Optical arrangements for wireless networks[N0802] | |
| H04B10/12R2D: | . . . . Distribution optical network, e.g. between a base station and a plurality of remote units[N0802] | |
| H04B10/12R2D2: | . . . . . Star network topology[N0802] | |
| H04B10/12R2D4: | . . . . . Bus network topology[N0802] | |
| H04B10/12R2D4G: | . . . . . . Ring network topology[N0802] | |
| H04B10/12R2S: | . . . . between a central unit and a single remote unit by means of an optical fibre[N0802] | |
| H04B10/12R2S1: | . . . . . details on the reception of RF signal and the optical conversion before the optical fibre[N0802] | |
| H04B10/13: | . . using multimodal transmission, | |
| H04B10/135: | . . using single-mode transmission | |
| H04B10/135M: | . . . Polarisation modulation; Polarisation switching | |
| H04B10/135P: | . . . Polarisation-independent transmission | |
| H04B10/14: | . . Terminal stations | |
| H04B10/142: | . . . Coherent homodyne or heterodyne systems | |
| H04B10/145: | . . . . Transmitters | |
| H04B10/148: | . . . . Receivers | |
| H04B10/148C: | . . . . . with automatic polarisation control | |
| H04B10/148D: | . . . . . using polarisation diversity or image rejection | |
| H04B10/148H: | . . . . . with synchronous detection | |
| H04B10/148P: | . . . . . using phase diversity | |
| H04B10/152: | . . . Non-coherent direct-detection systems | |
| H04B10/155: | . . . . Transmitters | |
| H04B10/155F: | . . . . . Functional aspects[N0412] | |
| H04B10/155F1: | . . . . . . Pulse generation, e.g. for RZ transmission[N0412] | |
| H04B10/155F2: | . . . . . . Linearisation and reduction of distorsion[N0412] | |
| H04B10/155F3: | . . . . . . Power control[N0412] | |
| H04B10/155F4: | . . . . . . Details on coding or modulation of optical signals (details on electrical domain processing H04L27/00)[N0412][C1109] | |
| H04B10/155F4A: | . . . . . . . Pulse modulation, e.g. pulse position modulation [PPM or pulse width modulation [PWM]] [N1109] | |
| H04B10/155F4C: | . . . . . . . Return to zero modulation schemes[N1109] | |
| H04B10/155F4E: | . . . . . . . Polarization modulation, polarization switching or transmission of a single data stream on two orthogonal polarizations (polarization multiplexing H04J14/06)[N1109] | |
| H04B10/155F4G: | . . . . . . . Intensity modulation, e.g. analogue intensity or amplitude modulation[N1109] | |
| H04B10/155F4G1: | . . . . . . . . Digital intensity or amplitude modulation, e.g. amplitude shift keying [ASK, on off keying [OOK] or quadrature amplitude modulation [QAM]] [N1109] | |
| H04B10/155F4J: | . . . . . . . Phase or frequency modulation, e.g. analogue phase or frequency modulation[N1109] | |
| H04B10/155F4J1: | . . . . . . . . Digital modulation[N1109] | |
| H04B10/155F4J1A: | . . . . . . . . . Digital phase modulation, e.g. phase shift keying [PSK or differential quadrature phase shift keying [DQPSK]] [N1109] | |
| H04B10/155F4J1C: | . . . . . . . . . Digital frequency modulation, e.g. frequency shift keying [FSK or minimum shift keying [MSK]] [N1109] | |
| H04B10/155F4K: | . . . . . . . Combined modulation schemes[N1109] | |
| H04B10/155F4M: | . . . . . . . Carrier suppressed, single sideband, double sideband or vestigial[N1109] | |
| H04B10/155F4P: | . . . . . . . Duobinary, [AMI or smission [PSTB]] [N1109] | |
| H04B10/155F5: | . . . . . . Wavelength stabilisation (semiconducor laser frequency stabilisaton per se H01S5/068)[N0412] | |
| H04B10/155S: | . . . . . Structural aspects[N0412] | |
| H04B10/155S1: | . . . . . . LED transmitters (light-emitting diodes H01L33/00)[N0412] | |
| H04B10/155S2: | . . . . . . Laser transmitters (lasers H01S3/00)[N0412] | |
| H04B10/155S2D: | . . . . . . . using direct modulation[N0412] | |
| H04B10/155S2E: | . . . . . . . using external modulation[N0412] | |
| H04B10/155S2E2: | . . . . . . . . using a series/cascade combination of modulators[N0905] | |
| H04B10/155S2E4: | . . . . . . . . using a parallel/shunt combination of modulators[N0905] | |
| H04B10/155S2E6: | . . . . . . . . using a precoder[N0905] | |
| H04B10/155S2E8: | . . . . . . . . using a feedback signal generated by analising the optical output[N0905] | |
| H04B10/155S2E8A: | . . . . . . . . . to control the modulating signal amplitude including amplitude distortion[N0905] | |
| H04B10/155S2E8D: | . . . . . . . . . to control the modulator DC bias[N0905] | |
| H04B10/155S2E8P: | . . . . . . . . . to control the phase of the modulating signal[N0905] | |
| H04B10/155S2E9: | . . . . . . . . using a feed-forward signal generated by analysing the optical or electrical input[N0905] | |
| H04B10/155S2E9A: | . . . . . . . . . to control the modulating signal amplitude including amplitude distortion[N0905] | |
| H04B10/155S2E9D: | . . . . . . . . . to control the modulator DC bias[N0905] | |
| H04B10/155S2E9P: | . . . . . . . . . to control the phase of the modulating signal[N0905] | |
| H04B10/155S3: | . . . . . . Multiwavelength trnsmitters[N0412] [M1109] | |
| H04B10/158: | . . . . Receivers | |
| H04B10/158D: | . . . . . Optical arrangements in the receiver[N0802] | |
| H04B10/158D1: | . . . . . . for controlling the input optical signal[N0802] | |
| H04B10/158D1A: | . . . . . . . for controlling the power of the input optical signal[N0802] | |
| H04B10/158D1A1: | . . . . . . . . using an optical preamplifier[N0802] | |
| H04B10/158D1A2: | . . . . . . . . using a variable optical attenuator[N0802] | |
| H04B10/158D1B: | . . . . . . . for controlling the optical bandwidth of the input signal, e.g. spectral filtering[N0802] | |
| H04B10/158D2: | . . . . . . for all-optical demodulation of the input optical signal[N0802] | |
| H04B10/158D2D: | . . . . . . . for differentially modulated signal, e.g. DPSK signals[N0802] | |
| H04B10/158E: | . . . . . Electrical arrangements in the optical receiver[N0802] | |
| H04B10/158E1: | . . . . . . Arrangements for optimising the photodetector in the receiver (details of photodiodes H01L31/102, circuits for photodiodes H01L31/02H)[N0802] | |
| H04B10/158E1B: | . . . . . . . Photodiode Bias Control, e.g. for compensating temperature variations[N0802] | |
| H04B10/158E2: | . . . . . . Arrangements for optimising the preamplifier in the receiver (transimpedance amplifiers H03F1/08, amplifiers controlled by light H03F3/08)[N0802] | |
| H04B10/158E2A: | . . . . . . . Automatic Gain Control of the preamplifier (in general H03G3/30F)[N0802] | |
| H04B10/158E2B: | . . . . . . . Bandwidth control of bit rate adaptation (in general H04L1/00A1, modification of amplifiers to extend the bandwidth H03F1/42)[N0802] | |
| H04B10/158E2C: | . . . . . . . Offset control of the differential preamplifier (Offset control in differential amplifiers per se H03F3/45S3)[N0802] | |
| H04B10/158E3: | . . . . . . Arrangements for optimising the decision element in the receiver, e.g. by using automatic threshold control (in general H04L25/06A)[N0802] | |
| H04B10/158E4: | . . . . . . Arrangements for reducing noise and distortion[N0802] | |
| H04B10/158E4E: | . . . . . . . using equalisation (details about equalisers H04L25/03B )[N0802] | |
| H04B10/158E4F: | . . . . . . . using passive filtering[N0802] | |
| H04B10/158E4N: | . . . . . . . using noise matching networks[N0802] | |
| H04B10/16: | . . Repeaters | |
| H04B10/17: | . . . in which processing or amplification is carried out without conversion of the signal from optical form | |
| H04B10/17A: | . . . . using a single amplifying repeater, e.g. 1R-repeater (H04B10/17B takes precedence)[N0010] | |
| H04B10/17A1: | . . . . . Gain equalisation, i.e. reducing repeater gain-wavelength dependency[N0010] | |
| H04B10/17A1F: | . . . . . . using an equalising unit, e.g. a filter[N0010] | |
| H04B10/17A1G: | . . . . . . using Automatic Gain Control (AGC)[N0010][C0102] | |
| H04B10/17A2: | . . . . . Transient Power Control in WDM systems, e.g. due to channel Add/Drop or fluctuations[N0010][C0201] | |
| H04B10/17A4: | . . . . . Signal Power Control using Automatic Gain Control (AGC) (H04B10/17A1G, H04B10/17A2 take precedence)[N0201] | |
| H04B10/17B: | . . . . Bidirectional amplification[N0010] | |
| H04B10/17B1: | . . . . . a single amplifier for both directions[N0010] | |
| H04B10/17B2: | . . . . . each direction being amplified separately[N0010] | |
| H04B10/17C: | . . . . Two-way repeaters, i.e. repeater amplifying both upward and downward lines[N0010] | |
| H04B10/17D: | . . . . considering the whole optical path[N0010] | |
| H04B10/17D1: | . . . . . with a cascade of amplifiers[N0010] | |
| H04B10/17D1G: | . . . . . . Gain equalisation[N0010] | |
| H04B10/17D1L: | . . . . . . Recirculating loop[N0010] | |
| H04B10/17D2: | . . . . . Repeaterless systems[N0010] | |
| H04B10/17D3: | . . . . . Network aspects[N0010] | |
| H04B10/17P: | . . . . Signal waveform processing, clock recovery and retiming, e.g. 2R and 3R regenerators (optical clock recovery H04L7/00P)[N0010] | |
| H04B10/17R: | . . . . using Raman or Brillouin amplifiers[C0010] | |
| H04B10/17S: | . . . . using lumped semiconductor amplifiers[C0010] | |
| H04B10/18: | . . Arrangements for reducing or eliminating distortion or dispersion, e.g. equalisers | |
| H04B10/18C: | . . . minimising the distortion caused by scattering processes[C9509] | |
| H04B10/18D: | . . . Minimising the distortion caused by chromatic dispersion (compensating devices per se G02B6/34B10)[C0107] | |
| H04B10/18D1: | . . . . Systems including a lumped dispersion compensator[N0107] | |
| H04B10/18D1G: | . . . . . using fibre Bragg gratings[N0107] | |
| H04B10/18D2: | . . . . Systems including compensating optical fibres[N0107] | |
| H04B10/18D2M: | . . . . . Dispersion management, i.e. combining different kind of fibres in the transmission system[N0107] | |
| H04B10/18D3: | . . . . Pulse shaping at the transmitter, e.g. prechirping or Dispersion Supported Transmission (DST)[N0107] | |
| H04B10/18D4: | . . . . using spectral inversion, e.g. using optical phase conjugation[N0107] | |
| H04B10/18E: | . . . Spectral equalisation | |
| H04B10/18N: | . . . minimising the distortion caused by fibre non-linearities, e.g. Kerr effect[N0009] | |
| H04B10/18N1: | . . . . Self-Phase Modulation (SPM)[N0009] | |
| H04B10/18N2: | . . . . Cross-Phase Modulation (XPM)[N0009] | |
| H04B10/18N4: | . . . . Four Wave Mixing (FWM)[N0009] | |
| H04B10/18P: | . . . minimising the polarisation-dependent distortion, e.g. Polarisation Mode Dispersion[N0009] | |
| H04B10/18S: | . . . using soliton propagation | |
| H04B10/20: | . . Arrangements for networking, e.g. bus or star coupling | |
| H04B10/207: | . . . using a star-type coupler | |
| H04B10/207H: | . . . . with a headend, i.e. one-to-many, many-to-one[N9604] | |
| H04B10/207H1: | . . . . . with amplification of the optical signal[N9604] | |
| H04B10/207L: | . . . . without a headend, i.e. many-to-many[N9604] | |
| H04B10/207L1: | . . . . . with amplification of the optical signal[N9604] | |
| H04B10/20A: | . . . Architecture[N0903] | |
| H04B10/20A1: | . . . . Star or tree networks[N0903] | |
| H04B10/20A1N: | . . . . . Star or tree networks without a headend[N0903] | |
| H04B10/20A2: | . . . . Ring or loop networks[N0903] | |
| H04B10/20A2H: | . . . . . Ring or loop networks with a headend[N0903] | |
| H04B10/20A3: | . . . . Bus networks[N0903] | |
| H04B10/20A4: | . . . . Combination of networks, e.g. star or tree configuration in the same network or two ring networks interconnected[N0903] | |
| H04B10/20F: | . . . Functional aspects[N0903] | |
| H04B10/20F1: | . . . . Power, amplification or attenuation in the network[N0903] | |
| H04B10/20F2: | . . . . Arrangements to improve signal quality, e.g. BER or OSNR[N0903] | |
| H04B10/20F3: | . . . . Active optical networks (AON)[N0903] | |
| H04B10/213: | . . . using a T-type coupler | |
| H04B10/213A: | . . . . active | |
| H04B10/213A1: | . . . . . optical by-passes | |
| H04B10/213P: | . . . . passive | |
| H04B10/22: | . Transmission between two stations which are mobile relative to each other | |
| H04B10/22F: | . . using optical fibre links | |
| H04B10/24: | . Bidirectional transmission | |
| H04B10/24A: | . . Transmission components[N0105] | |
| H04B10/24A1: | . . . Transceivers (H04B10/28 takes precedence); (structural association of photodiodes and LED's H01L31/12)[N0105][C0508] | |
| H04B10/25: | . Arrangements specific to fibre transmission (optical fibres per se, structural details of arrangements comprising optical fibres or other optical elements G02B6/00 | |
| H04B10/2503: | . . Bidirectional transmission | |
| H04B10/2504: | . . Transmission components H04B10/40 takes precedence | |
| H04B10/2507: | . . for the reduction or elimination of distortion or dispersion | |
| H04B10/25073: | . . . using spectral equalisation, e.g. spectral filtering | |
| H04B10/25077: | . . . using soliton propagation | |
| H04B10/2513: | . . . due to chromatic dispersion | |
| H04B10/25133: | . . . . including a lumped electrical or optical dispersion compensator H04B10/2519, H04B10/2525 take precedence; optical dispersion compensators involving optical fibres per se G02B6/293) | |
| H04B10/25137: | . . . . using pulse shaping at the transmitter, e.g. pre-chirping or dispersion supported transmission [DST ] | |
| H04B10/2519: | . . . . using Bragg gratings Bragg gratings per se G02B6/02G8; devices using fibre gratings for dispersion control per se G02B6/293D4 | |
| H04B10/2525: | . . . . using dispersion-compensating fibres dispersion-tailored or dispersion compensation fibres per se G02B6/02M | |
| H04B10/25253: | . . . . . with dispersion management, i.e. using a combination of different kind of fibres in the transmission system devices with different kinds of fibres for dispersion control per se G02B6/293M4 | |
| H04B10/2531: | . . . . using spectral inversion | |
| H04B10/2537: | . . . due to scattering processes, e.g. Raman or Brillouin scattering | |
| H04B10/2543: | . . . due to fibre non-linearities, e.g. Kerr effect non-linear optical devices G02F1/35 | |
| H04B10/255: | . . . . Self-phase modulation [SPM] | |
| H04B10/2557: | . . . . Cross-phase modulation [XPM] | |
| H04B10/2563: | . . . . Four-wave mixing [FWM] | |
| H04B10/2569: | . . . due to polarisation mode dispersion [PMD] | |
| H04B10/2572: | . . . due to forms of polarisation-dependent distortion other than PMD | |
| H04B10/2575: | . . Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier sub-carrier multiplexing H04J14/02S | |
| H04B10/25751: | . . . Optical arrangements for CATV or video distribution adaptations of television systems for optical transmission H04N7/22 | |
| H04B10/25752: | . . . Optical arrangements for wireless networks | |
| H04B10/25753: | . . . . Distribution optical network, e.g. between a base station and a plurality of remote units WDM networks in general H04J14/02N [M1207] | |
| H04B10/25754: | . . . . . Star network topology | |
| H04B10/25755: | . . . . . Ring network topology | |
| H04B10/25756: | . . . . . Bus network topology | |
| H04B10/25758: | . . . . between a central unit and a single remote unit by means of an optical fibre | |
| H04B10/25759: | . . . . . Details of the reception of RF signal or the optical conversion before the optical fibre | |
| H04B10/2581: | . . Multimode transmission mode multiplex systems H04J14/04 | |
| H04B10/2587: | . . using a single light source for multiple stations | |
| H04B10/26: | . . using a single light source for both stations involved | |
| H04B10/27: | . Arrangements for networking free-space networks H04B10/11, WDM networks H04J14/02N, specific to radio-over-fibre H04B10/25753 | |
| H04B10/271: | . . Combination of different networks, e.g. star and ring configuration in the same network or two ring networks interconnected | |
| H04B10/272: | . . Star-type networks or tree-type networks | |
| H04B10/2725: | . . . Star-type networks without a headend | |
| H04B10/275: | . . Ring-type networks | |
| H04B10/2755: | . . . Ring-type networks with a headend | |
| H04B10/278: | . . Bus-type networks | |
| H04B10/28: | . . using a single device as a light source or a light receiver | |
| H04B10/29: | . Repeaters | |
| H04B10/291: | . . in which processing or amplification is carried out without conversion of the main signal from optical form fibre optical amplifiers per se H01S3/067 | |
| H04B10/2912: | . . . characterised by the medium used for amplification or processing | |
| H04B10/2914: | . . . . using lumped semiconductor optical amplifiers [SOA ] | |
| H04B10/2916: | . . . . using Raman or Brillouin amplifiers Raman or Brillouin amplifiers per se H01S3/30F | |
| H04B10/2918: | . . . Two-way repeaters, i.e. repeaters amplifying separate upward and downward lines | |
| H04B10/293: | . . . Signal power control | |
| H04B10/2931: | . . . . using AGC H04B10/294 takes precedence | |
| H04B10/2933: | . . . . considering the whole optical path | |
| H04B10/2935: | . . . . . with a cascade of amplifiers | |
| H04B10/2937: | . . . . . Systems with a repeater placed only at the beginning or the end of the system, i.e. repeaterless systems, e.g. systems with only post and pre-amplification | |
| H04B10/2939: | . . . . . Network aspects | |
| H04B10/294: | . . . . in a multiwavelength system, e.g. gain equalisation for general power control in WDM systems, see also H04J14/02B | |
| H04B10/2941: | . . . . . using an equalising unit, e.g. a filter H04B10/296 takes precedence | |
| H04B10/2942: | . . . . . using automatic gain control [AGC ] | |
| H04B10/296: | . . . . . Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power | |
| H04B10/297: | . . . Bidirectional amplification | |
| H04B10/2971: | . . . . A single amplifier for both directions | |
| H04B10/2972: | . . . . Each direction being amplified separately | |
| H04B10/299: | . . . Signal waveform processing, e.g. reshaping or retiming | |
| H04B10/30: | . Transmission systems employing beams of corpuscular radiation [M1202] | |
| H04B10/04: | . . Transmitters | |
| H04B10/40: | . Transceivers | |
| H04B10/43: | . . using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver | |
| H04B10/50: | . Transmitters | |
| H04B10/501: | . . Structural aspects | |
| H04B10/502: | . . . LED transmitters | |
| H04B10/503: | . . . Laser transmitters | |
| H04B10/504: | . . . . using direct modulation | |
| H04B10/505: | . . . . using external modulation | |
| H04B10/5051: | . . . . . using a series, i.e. cascade, combination of modulators | |
| H04B10/5053: | . . . . . using a parallel, i.e. shunt, combination of modulators | |
| H04B10/5055: | . . . . . using a pre-coder | |
| H04B10/5057: | . . . . . using a feedback signal generated by analysing the optical output | |
| H04B10/50572: | . . . . . . to control the modulating signal amplitude including amplitude distortion | |
| H04B10/50575: | . . . . . . to control the modulator DC bias | |
| H04B10/50577: | . . . . . . to control the phase of the modulating signal | |
| H04B10/5059: | . . . . . using a feed-forward signal generated by analysing the optical or electrical input | |
| H04B10/50593: | . . . . . . to control the modulating signal amplitude including amplitude distortion | |
| H04B10/50595: | . . . . . . to control the modulator DC bias | |
| H04B10/50597: | . . . . . . to control the phase of the modulating signal | |
| H04B10/506: | . . . Multi-wavelength transmitters WDM systems in general H04J14/02 | |
| H04B10/508: | . . Pulse generation, e.g. generation of solitons | |
| H04B10/516: | . . Details of coding or modulation | |
| H04B10/5161: | . . . Combination of different modulation schemes | |
| H04B10/5162: | . . . Return-to-zero modulation schemes | |
| H04B10/5165: | . . . Carrier suppressed; Single sideband; Double sideband or vestigial | |
| H04B10/5167: | . . . Duo-binary; Alternative mark inversion; Phase shaped binary transmission | |
| H04B10/524: | . . . Pulse modulation | |
| H04B10/532: | . . . Polarisation modulation e.g. polarization switching or transmission of a single data stream on two orthogonal polarizations polarization multiplexed systems H04J14/06 | |
| H04B10/54: | . . . Intensity modulation | |
| H04B10/541: | . . . . Digital intensity or amplitude modulation | |
| H04B10/548: | . . . Phase or frequency modulation | |
| H04B10/556: | . . . . Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK] | |
| H04B10/5561: | . . . . . Digital phase modulation | |
| H04B10/5563: | . . . . . Digital frequency modulation | |
| H04B10/564: | . . Power control | |
| H04B10/572: | . . Wavelength control | |
| H04B10/58: | . . Compensation for non-linear transmitter output | |
| H04B10/588: | . . . in external modulation systems | |
| H04B10/06: | . . Receivers | |
| H04B10/60: | . Receivers | |
| H04B10/61: | . . Coherent receivers [N: i.e., optical receivers using an optical local oscillator (delay line interferometer based DPSK optical receivers H04B10/677)] | |
| H04B10/611: | . . . [N: Intradyne, i.e., coherent receivers with a free running local oscillator having a frequency close but not phase-locked to the carrier signal] | |
| H04B10/612: | . . . [N: for optical signals modulated with a format different from binary or higher-order PSK [X-PSK], e.g. QAM, DPSK, FSK, MSK, ASK] | |
| H04B10/613: | . . . [N: including phase diversity, e.g., having in-phase and quadrature branches, as in QPSK coherent receivers] | |
| H04B10/614: | . . . [N: comprising one or more polarization beam splitters, e.g. polarization multiplexed [PolMux] X-PSK coherent receivers, polarization diversity heterodyne coherent receivers (H04J14/06 takes precedence) ] | |
| H04B10/615: | . . . [N: Arrangements affecting the optical part of the receiver (adjustment of the frequency or phase of the local oscillator in homodyne receivers H04B10/63, use of polarization beam splitters H04B10/614)] | |
| H04B10/6151: | . . . . [N: comprising a polarization controller at the receiver's input stage] | |
| H04B10/616: | . . . [N: Details of the electronic signal processing in coherent optical receivers] | |
| H04B10/6161: | . . . . [N: Compensation of chromatic dispersion] | |
| H04B10/6162: | . . . . [N: Compensation of polarization related effects, e.g., PMD, PDL] | |
| H04B10/6163: | . . . . [N: Compensation of non-linear effects in the fiber optic link, e.g. self-phase modulation [SPM], cross-phase modulation [XPM], four wave mixing [FWM]] | |
| H04B10/6164: | . . . . [N: Estimation or correction of the frequency offset between the received optical signal and the optical local oscillator | |
| H04B10/6165: | . . . . [N: Estimation of the phase of the received optical signal, phase error estimation or phase error correction] | |
| H04B10/6166: | . . . . [N: Polarization demultiplexing, tracking or alignment of orthogonal polarization components (polarisation multiplex systems H04J14/06)] | |
| H04B10/63: | . . . Homodyne [N:, i.e., coherent receivers where the local oscillator is locked in frequency and phase to the carrier signal] | |
| H04B10/64: | . . . Heterodyne [N:, i.e., coherent receivers where, after the opto-electronic conversion, an electrical signal at an intermediate frequency [fIF] is obtained] | |
| H04B10/66: | . . Non-coherent receivers, e.g. using direct detection | |
| H04B10/67: | . . . Optical arrangements in the receiver | |
| H04B10/671: | . . . . for controlling the input optical signal | |
| H04B10/672: | . . . . . for controlling the power of the input optical signal | |
| H04B10/673: | . . . . . . using an optical preamplifier | |
| H04B10/674: | . . . . . . using a variable optical attenuator | |
| H04B10/675: | . . . . . for controlling the optical bandwidth of the input signal, e.g. spectral filtering | |
| H04B10/676: | . . . . for all-optical demodulation of the input optical signal | |
| H04B10/677: | . . . . . for differentially modulated signal, e.g. DPSK signals | |
| H04B10/69: | . . . Electrical arrangements in the receiver | |
| H04B10/691: | . . . . Arrangements for optimizing the photodetector in the receiver | |
| H04B10/6911: | . . . . . Photodiode bias control, e.g. for compensating temperature variations | |
| H04B10/693: | . . . . Arrangements for optimizing the preamplifier in the receiver | |
| H04B10/6931: | . . . . . Automatic gain control of the preamplifier | |
| H04B10/6932: | . . . . . Bandwidth control of bit rate adaptation | |
| H04B10/6933: | . . . . . Offset control of the differential preamplifier | |
| H04B10/695: | . . . . Arrangements for optimizing the decision element in the receiver, e.g. by using automatic threshold control | |
| H04B10/697: | . . . . Arrangements for reducing noise and distortion | |
| H04B10/6971: | . . . . . using equalisation | |
| H04B10/6972: | . . . . . using passive filtering | |
| H04B10/6973: | . . . . . using noise matching networks | |
| H04B10/70: | . Photonic quantum communication | |
| H04B10/08: | . . Equipment [N: or method] for monitoring, testing or fault measuring | |
| H04B10/80: | . Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B 10/03-H04B 10/70, e.g. optical power feeding or optical transmission through water | |
| H04B10/801: | . . using optical interconnects, e.g. light coupled isolators, circuit board interconnections | |
| H04B10/802: | . . . for isolation, e.g. using optocouplers | |
| H04B10/803: | . . . Free space interconnects, e.g. between circuit boards or chips | |
| H04B10/806: | . . Arrangements for feeding power | |
| H04B10/807: | . . . Optical power feeding, i.e. transmitting power using an optical signal | |
| H04B10/808: | . . . Electrical power feeding of an optical transmission system power feeding arrangements in general H04B3/44 | |
| H04B10/85: | . . Protection from unauthorised access, e.g. eavesdrop protection | |
| H04B10/90: | . Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation | |
| H04B11/00: | Transmission systems employing sonic, ultrasonic or infrasonic waves | |
| H04B13/00: | Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 to H04B11/00 | |
| H04B13/00B: | . Transmission systems in which the medium consists of the human body | |
| H04B13/02: | . Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy | |
| H04B14/00: | Transmission systems not characterised by the medium used for transmission | |
| H04B14/00B: | . characterised by the use of a carrier modulation using subcarrier modulation H04B14/08 | |
| H04B14/00B1: | . . Amplitude modulation | |
| H04B14/00B2: | . . Angle modulation | |
| H04B14/00B3: | . . Polarisation modulation | |
| H04B14/02: | . characterised by the use of pulse modulation | |
| H04B14/02A: | . . using pulse amplitude modulation | |
| H04B14/02B: | . . using pulse time characteristics modulation, e.g. width, position, interval | |
| H04B14/04: | . . using pulse code modulation | |
| H04B14/04B: | . . . Special circuits, e.g. comparators | |
| H04B14/04C: | . . . Sample and hold circuits in general G11C27/02 | |
| H04B14/04D: | . . . Systems or methods for reducing noise or bandwidth | |
| H04B14/04D2: | . . . . Non linear compression or expansion | |
| H04B14/06: | . . Using differential modulation, e.g. delta modulation | |
| H04B14/06B: | . . . using delta modulation or one-bit differential modulation [1DPCM ] | |
| H04B14/06B2: | . . . . with adaptive feedback | |
| H04B14/06C: | . . . using differential modulation with several bits (NDPCM) | |
| H04B14/06C2: | . . . . with adaptive feedback | |
| H04B14/08: | . characterised by the use of a sub-carrier | |
| H04B15/00: | Suppression or limitation of noise or interference | |
| H04B15/00B: | . Reducing noise e.g. humm, from the supply | |
| H04B15/02: | . Reducing interference from electric apparatus by means located at or near the interfering apparatus | |
| H04B15/02B: | . . Reducing interference from ignition apparatus of fuel engines cables with high resistance H01B | |
| H04B15/04: | . . the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver, in a tape-recorder | |
| H04B15/06: | . . . by local oscillators of receivers | |
| H04B17/00: | Monitoring; Testing | |
| H04B17/00A: | . of transmitters H04B17/00D takes precedence | |
| H04B17/00A1: | . . for calibration | |
| H04B17/00A1A: | . . . of transmit antennas, e.g. of the amplitude or phase | |
| H04B17/00A1G: | . . . of power amplifier, e.g. gain or non-linearities | |
| H04B17/00A1T: | . . . of the whole transmission and reception path, e.g. self-test loop-back | |
| H04B17/00A1W: | . . . of other elements, e.g. filter calibration or I/Q mismatch | |
| H04B17/00A2: | . . for performance testing | |
| H04B17/00A2E: | . . . Test equipment at the transmitter | |
| H04B17/00A2F: | . . . Detection of faulty performance, e.g. under performance or response deviations | |
| H04B17/00A2N: | . . . Monitoring during normal operation | |
| H04B17/00A2S: | . . . Self-testing arrangements | |
| H04B17/00A3: | . . for measurement of parameters | |
| H04B17/00A3P: | . . . of radiated power at antenna port | |
| H04B17/00A3R: | . . . of reflected power, e.g. return loss | |
| H04B17/00A3S: | . . . of other parameters, e.g. DC offset, delay or propagation times | |
| H04B17/00B: | . of receivers H04B17/00D, H04B17/00F take precedence | |
| H04B17/00B1: | . . [N: Measuring channel quality parameters] | |
| H04B17/00B1C: | . . . [N: Signal code power and other power values per channel] | |
| H04B17/00B1D: | . . . [N: Delay profiles] | |
| H04B17/00B1F: | . . . [N: Interference values] | |
| H04B17/00B1L: | . . . [N: Adjacent channel leakage power] | |
| H04B17/00B1N: | . . . Noise values | |
| H04B17/00B1R: | . . . [N: Received signal strength] | |
| H04B17/00B1S: | . . . Estimation of signal-to-interference ratio [SIR or carrier-to-interference ratio [CIR] ] | |
| H04B17/00B2: | . . [N: Calibrating or correcting measurements] | |
| H04B17/00B3: | . . [N: Indication means, e.g. displays, alarms, audible means] | |
| H04B17/00B4: | . . [N: with feedback of measurements to the transmitter (for modifying transmission characteristics H04L1/00A9B, for allocation of payload in multicarrier systems H04L27/26M1P)] | |
| H04B17/00B5: | . . [N: using historical readings, averaging values or statistics] | |
| H04B17/00B6: | . . [N: for locating or positioning the transmitter] | |
| H04B17/00B7: | . . [N: Predicting channel quality parameters] | |
| H04B17/00B8: | . . [N:for resource allocation, admission control or handover] | |
| H04B17/00B9: | . . for testing the receiver RF performance | |
| H04B17/00D: | . using a service channel or an auxiliary channel | |
| H04B17/00D1: | . . [N: using test signal generators] | |
| H04B17/00D2: | . . [N: using auxiliary channels or channel simulators] | |
| H04B17/00F: | . [N: Modeling or characterizing the propagation channel] | |
| H04B17/00F1: | . . [N: Fading models and fading generators] | |
| H04B17/00F2: | . . Simulation models | |
| H04B17/00F3: | . . Predictive models | |
| H04B17/02: | . of relay systems | |
| H04B17/02B: | . . with selective localization | |
| H04B17/02B1: | . . . using different frequencies | |
| H04B17/02B1B: | . . . . generated by local oscillators | |
| H04B17/02B1C: | . . . . selected by local filters | |
| H04B17/02B1D: | . . . . generated by local multipliers, dividers, modulators | |
| H04B17/02B2: | . . . using coded addresses | |
| H04B17/02C: | . . without selective localization | |
| H04B17/02C1: | . . . using successive loop-backs | |
| H04B17/02C2: | . . . by means of resistance, voltage or current measurement | |
| H04B10/00: | Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication | |
| H04B10/07A: | . . Monitoring a transmission line in service[N1202] | |
| H04B10/07A1: | . . . using the data signal[N1202] | |
| H04B10/07A1F: | . . . . Fault location on the transmission path[N1202] | |
| H04B10/07A1N: | . . . . Network aspects, e.g. central monitoring and network management[N1202] | |
| H04B10/07A1P: | . . . . Performance monitoring and measurement of transmission parameters[N1202] | |
| H04B10/07A1P1: | . . . . . Monitoring or measuring chromatic dispersion or polarisation mode dispersion [PMD] [N1202] | |
| H04B10/07A1P2: | . . . . . Monitoring or measuring optical signal-to-noise ratio [OSNR, bit error rate [BER] or quality factor [Q]] [N1202] | |
| H04B10/07A1P3: | . . . . . Monitoring or measuring power[N1202] | |
| H04B10/07A1P4: | . . . . . Monitoring or measuring wavelength[N1202] | |
| H04B10/07A1R: | . . . . Monitoring line transmitter or line receiver equipment[N1202] | |
| H04B10/07A1T: | . . . . Monitoring line transmitter or line receiver equipment[N1202] | |
| H04B10/07A2: | . . . using a supervisory signal[N1202] | |
| H04B10/07A2F: | . . . . Fault location on the transmission path[N1202] | |
| H04B10/07A2N: | . . . . Network aspects, e.g. central monitoring and network management[N1202] | |
| H04B10/07A2P: | . . . . Performance monitoring and measurement of transmission parameters[N1202] | |
| H04B10/07A2R: | . . . . Monitoring line amplifier or line repeater equipment[N1202] | |
| H04B10/07A2T: | . . . . Monitoring line transmitter or line receiver equipment[N1202] | |
| H04B10/07C: | . . Monitoring a transmission line out of service[N1202] | |
| H04B10/07C1: | . . . Testing or characterisation of optical devices, e.g. amplifiers[N1202] | |
| H04B10/07R: | . . Monitoring using a reflected signal[N1202] | |
| H04B10/24B: | . . using a single light source for both stations involved [N1202] | |
