|
H04B 1/00
|
Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission |
|
H04B 1/02
|
Transmitters |
|
H04B 1/03
|
Constructional details, e.g. casings, housings |
|
H04B 1/04
|
Circuits |
|
H04B 1/06
|
Receivers |
|
H04B 1/08
|
Constructional details, e.g. cabinet |
|
H04B 1/10
|
Means associated with receiver for limiting or suppressing noise or interference |
|
H04B 1/12
|
Neutralising, balancing, or compensation arrangements |
|
H04B 1/14
|
Automatic detuning arrangements |
|
H04B 1/16
|
Circuits |
|
H04B 1/18
|
Input circuits, e.g. for coupling to an antenna or a transmission line |
|
H04B 1/20
|
Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver |
|
H04B 1/22
|
Circuits for receivers in which no local oscillation is generated |
|
H04B 1/24
|
Circuits for receivers in which no local oscillation is generated the receiver comprising at least one semiconductor device having three or more electrodes |
|
H04B 1/26
|
Circuits for superheterodyne receivers |
|
H04B 1/28
|
Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes |
|
H04B 1/30
|
Circuits for homodyne or synchrodyne receivers |
|
H04B 1/034
|
Portable transmitters |
|
H04B 1/036
|
Cooling arrangements |
|
H04B 1/38
|
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 |
|
H04B 1/40
|
Circuits |
|
H04B 1/44
|
Transmit/receive switching |
|
H04B 1/46
|
Transmit/receive switching by voice-frequency signalsTransmit/receive switching by pilot signals |
|
H04B 1/48
|
Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter |
|
H04B 1/50
|
Circuits using different frequencies for the two directions of communication |
|
H04B 1/52
|
Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa |
|
H04B 1/54
|
Circuits using the same frequency for two directions of communication |
|
H04B 1/56
|
Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions |
|
H04B 1/58
|
Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa |
|
H04B 1/59
|
RespondersTransponders |
|
H04B 1/60
|
Supervising unattended repeaters |
|
H04B 1/62
|
Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio |
|
H04B 1/64
|
Volume compression or expansion arrangements |
|
H04B 1/66
|
Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signalsDetails of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for improving efficiency of transmission |
|
H04B 1/68
|
Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for wholly or partially suppressing the carrier or one side band |
|
H04B 1/69
|
Spread spectrum techniques |
|
H04B 1/71
|
Interference-related aspects the interference being narrowband interference |
|
H04B 1/72
|
Circuits or components for simulating antennas, e.g. dummy antennas |
|
H04B 1/74
|
Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus |
|
H04B 1/76
|
Pilot transmitters or receivers for control of transmission or for equalising |
|
H04B 1/401
|
Circuits for selecting or indicating operating mode |
|
H04B 1/403
|
Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency |
|
H04B 1/405
|
Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels |
|
H04B 1/408
|
Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency the transmitter oscillator frequency being identical to the receiver local oscillator frequency |
|
H04B 1/525
|
Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver |
|
H04B 1/692
|
Hybrid techniques using combinations of two or more spread spectrum techniques |
|
H04B 1/707
|
Spread spectrum techniques using direct sequence modulation |
|
H04B 1/708
|
Parallel implementation |
|
H04B 1/709
|
Correlator structure |
|
H04B 1/711
|
Interference-related aspects the interference being multi-path interference |
|
H04B 1/712
|
Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop |
|
H04B 1/713
|
Spread spectrum techniques using frequency hopping |
|
H04B 1/715
|
Interference-related aspects |
|
H04B 1/717
|
Pulse-related aspects |
|
H04B 1/719
|
Interference-related aspects |
|
H04B 1/3805
|
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 with built-in auxiliary receivers |
|
H04B 1/3816
|
Mechanical arrangements for accommodating identification devices, e.g. cards or chipsTransceivers, 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 with connectors for programming identification devices |
|
H04B 1/3818
|
Arrangements for facilitating insertion or removal of identification devices |
|
H04B 1/3822
|
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 specially adapted for use in vehicles |
|
H04B 1/3827
|
Portable transceivers |
|
H04B 1/3877
|
Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters |
|
H04B 1/3883
|
Arrangements for mounting batteries or battery chargers |
|
H04B 1/3888
|
Arrangements for carrying or protecting transceivers |
|
H04B 1/7073
|
Synchronisation aspects |
|
H04B 1/7075
|
Synchronisation aspects with code phase acquisition |
|
H04B 1/7077
|
Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation |
|
H04B 1/7083
|
Cell search, e.g. using a three-step approach |
|
H04B 1/7085
|
Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop |
|
H04B 1/7087
|
Carrier synchronisation aspects |
|
H04B 1/7093
|
Matched filter type |
|
H04B 1/7095
|
Sliding correlator type |
|
H04B 1/7097
|
Interference-related aspects |
|
H04B 1/7103
|
Interference-related aspects the interference being multiple access interference |
|
H04B 1/7105
|
Joint detection techniques, e.g. linear detectors |
|
H04B 1/7107
|
Subtractive interference cancellation |
|
H04B 1/7113
|
Determination of path profile |
|
H04B 1/7115
|
Constructive combining of multi-path signals, i.e. RAKE receivers |
|
H04B 1/7117
|
Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers |
|
H04B 1/7136
|
Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform |
|
H04B 1/7143
|
Arrangements for generation of hop patterns |
|
H04B 1/7156
|
Arrangements for sequence synchronisation |
|
H04B 1/7163
|
Spread spectrum techniques using impulse radio |
|
H04B 1/7176
|
Data mapping, e.g. modulation |
|
H04B 1/7183
|
Synchronisation |
|
H04B 3/00
|
Line transmission systems |
|
H04B 3/02
|
Line transmission systems Details |
|
H04B 3/03
|
Hybrid circuits |
|
H04B 3/04
|
Control of transmissionEqualising |
|
H04B 3/06
|
Control of transmissionEqualising by the transmitted signal |
|
H04B 3/08
|
Control of transmissionEqualising by the transmitted signal in negative-feedback path of line amplifier |
|
H04B 3/10
|
Control of transmissionEqualising by pilot signal |
|
H04B 3/11
|
Control of transmissionEqualising by pilot signal using pilot wire |
|
H04B 3/12
|
Control of transmissionEqualising by pilot signal in negative-feedback path of line amplifier |
|
H04B 3/14
|
Control of transmissionEqualising characterised by the equalising network used |
|
H04B 3/16
|
Control of transmissionEqualising characterised by the negative-impedance network used |
|
H04B 3/18
|
Control of transmissionEqualising characterised by the negative-impedance network used wherein the network comprises semiconductor devices |
|
H04B 3/20
|
Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other |
|
H04B 3/21
|
Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a set of bandfilters |
|
H04B 3/23
|
Reducing echo effects or singingOpening or closing transmitting pathConditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers |
|
H04B 3/26
|
Improving frequency characteristic by the use of loading coils |
|
H04B 3/28
|
Reducing interference caused by currents induced in cable sheathing or armouring |
|
H04B 3/30
|
Reducing interference caused by unbalanced currents in a normally balanced line |
|
H04B 3/32
|
Reducing cross-talk, e.g. by compensating |
|
H04B 3/34
|
Reducing cross-talk, e.g. by compensating by systematic interconnection of lengths of cable during layingReducing cross-talk, e.g. by compensating by addition of balancing components to cable during laying |
|
H04B 3/36
|
Repeater circuits |
|
H04B 3/38
|
Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path |
|
H04B 3/40
|
Artificial linesNetworks simulating a line of certain length |
|
H04B 3/42
|
Circuits for by-passing of ringing signals |
|
H04B 3/44
|
Arrangements for feeding power to a repeater along the transmission line |
|
H04B 3/46
|
MonitoringTesting |
|
H04B 3/48
|
Testing attenuation |
|
H04B 3/50
|
Systems for transmission between fixed stations via two-conductor transmission lines |
|
H04B 3/52
|
Systems for transmission between fixed stations via waveguides |
|
H04B 3/54
|
Systems for transmission via power distribution lines |
|
H04B 3/56
|
Circuits for coupling, blocking, or by-passing of signals |
|
H04B 3/58
|
Repeater circuits |
|
H04B 3/60
|
Systems for communication between relatively movable stations, e.g. for communication with lift |
|
H04B 3/462
|
Testing group delay or phase shift, e.g. timing jitter |
|
H04B 3/466
|
Testing attenuation in combination with at least one of group delay and phase shift |
|
H04B 3/487
|
Testing crosstalk effects |
|
H04B 3/493
|
Testing echo effects or singing |
|
H04B 5/00
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems |
|
H04B 5/02
|
Near-field transmission systems, e.g. inductive loop type using transceiver |
|
H04B 5/04
|
Calling systems, e.g. paging system |
|
H04B 5/06
|
Near-field transmission systems, e.g. inductive loop type using a portable transmitter associated with a microphone |
|
H04B 5/20
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission techniqueNear-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission medium |
|
H04B 5/22
|
Capacitive coupling |
|
H04B 5/24
|
Inductive coupling |
|
H04B 5/26
|
Inductive coupling using coils |
|
H04B 5/28
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission techniqueNear-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables |
|
H04B 5/40
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission |
|
H04B 5/43
|
Antennas |
|
H04B 5/45
|
Transponders |
|
H04B 5/48
|
Transceivers |
|
H04B 5/70
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes |
|
H04B 5/72
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication |
|
H04B 5/73
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for taking measurements, e.g. using sensing coils |
|
H04B 5/75
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for isolation purposes |
|
H04B 5/77
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation |
|
H04B 5/79
|
Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer |
|
H04B 7/00
|
Radio transmission systems, i.e. using radiation field |
|
H04B 7/01
|
Reducing phase shift |
|
H04B 7/02
|
Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas |
|
H04B 7/04
|
Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas |
|
H04B 7/005
|
Control of transmissionEqualising |
|
H04B 7/06
|
Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station |
|
H04B 7/08
|
Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station |
|
H04B 7/10
|
Polarisation diversityDirectional diversity |
|
H04B 7/12
|
Frequency diversity |
|
H04B 7/14
|
Relay systems |
|
H04B 7/15
|
Active relay systems |
|
H04B 7/17
|
Ground-based stations employing pulse modulation, e.g. pulse code modulation |
|
H04B 7/19
|
Earth-synchronous stations |
|
H04B 7/22
|
Scatter propagation systems |
|
H04B 7/24
|
Radio transmission systems, i.e. using radiation field for communication between two or more posts |
|
H04B 7/26
|
Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile |
|
H04B 7/145
|
Passive relay systems |
|
H04B 7/155
|
Ground-based stations |
|
H04B 7/165
|
Ground-based stations employing angle modulation |
|
H04B 7/185
|
Space-based or airborne stations |
|
H04B 7/195
|
Non-synchronous stations |
|
H04B 7/204
|
Multiple access |
|
H04B 7/208
|
Frequency-division multiple access |
|
H04B 7/212
|
Time-division multiple access |
|
H04B 7/216
|
Code-division or spread-spectrum multiple access |
|
H04B 7/0404
|
Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity |
|
H04B 7/0408
|
Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity |
|
H04B 7/0413
|
MIMO systems |
|
H04B 7/0417
|
Feedback systems |
|
H04B 7/0426
|
Power distribution |
|
H04B 7/0452
|
Multi-user MIMO systems |
|
H04B 7/0456
|
Selection of precoding matrices or codebooks, e.g. using matrices for antenna weighting |
|
H04B 7/0491
|
Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector diversity |
|
H04B 7/0495
|
Diversity systemsMulti-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more sectors, i.e. sector diversity using overlapping sectors in the same base station to implement MIMO antennas |
|
H04B 10/00
|
Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication |
|
H04B 10/02
|
Details |
|
H04B 10/03
|
Arrangements for fault recovery |
|
H04B 10/04
|
Transmitters |
|
H04B 10/06
|
Receivers |
|
H04B 10/07
|
Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems |
|
H04B 10/08
|
Equipment for monitoring, testing or fault measuring |
|
H04B 10/10
|
Transmission through free space, e.g. through the atmosphere (H04B 10/22, H04B 10/24, H04B 10/30 take precedence);; |
|
H04B 10/11
|
Arrangements specific to free-space transmission, i.e. transmission through air or vacuum |
|
H04B 10/12
|
Transmission through light guides, e.g. optical fibres (H04B 10/22, H04B 10/24, H04B 10/30 take precedence);; |
|
H04B 10/13
|
using multimodal transmission |
|
H04B 10/14
|
Terminal stations |
|
H04B 10/16
|
Repeaters |
|
H04B 10/17
|
in which processing or amplification is carried out without conversion of the signal from optical form |
|
H04B 10/18
|
Arrangements for reducing or eliminating distortion or dispersion, e.g. equalisers |
|
H04B 10/20
|
Arrangements for networking, e.g. bus or star coupling |
|
H04B 10/22
|
Transmission between two stations which are mobile relative to each other (H04B 10/30 takes precedence);; |
|
H04B 10/24
|
Bidirectional transmission (H04B 10/22, H04B 10/30 take precedence);; |
|
H04B 10/25
|
Arrangements specific to fibre transmission |
|
H04B 10/26
|
using a single light source for both stations involved |
|
H04B 10/27
|
Arrangements for networking |
|
H04B 10/28
|
using a single device as a light source or a light receiver |
|
H04B 10/29
|
Repeaters |
|
H04B 10/30
|
Transmission systems employing beams of corpuscular radiation (arrangements for handling beams of corpuscular radiation, e.g. focusing, moderating, G21K 1/00) |
|
H04B 10/032
|
Arrangements for fault recovery using working and protection systems |
|
H04B 10/035
|
Arrangements for fault recovery using loopbacks |
|
H04B 10/038
|
Arrangements for fault recovery using bypasses |
|
H04B 10/40
|
Transceivers |
|
H04B 10/43
|
Transceivers using a single component as both light source and receiver, e.g. using a photoemitter as a photoreceiver |
|
H04B 10/50
|
Transmitters |
|
H04B 10/54
|
Intensity modulation |
|
H04B 10/58
|
Compensation for non-linear transmitter output |
|
H04B 10/60
|
Receivers |
|
H04B 10/61
|
Coherent receivers |
|
H04B 10/63
|
Homodyne |
|
H04B 10/64
|
Heterodyne |
|
H04B 10/66
|
Non-coherent receivers, e.g. using direct detection |
|
H04B 10/67
|
Optical arrangements in the receiver |
|
H04B 10/69
|
Electrical arrangements in the receiver |
|
H04B 10/70
|
Photonic quantum communication |
|
H04B 10/071
|
Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR] |
|
H04B 10/073
|
Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an out-of-service signal |
|
H04B 10/075
|
Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal |
|
H04B 10/077
|
Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal |
|
H04B 10/079
|
Arrangements for monitoring or testing transmission systemsArrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal |
|
H04B 10/80
|
Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups , e.g. optical power feeding or optical transmission through water |
|
H04B 10/85
|
Protection from unauthorised access, e.g. eavesdrop protection |
|
H04B 10/90
|
Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation |
|
H04B 10/105
|
specially adapted for satellite links |
|
H04B 10/112
|
Line-of-sight transmission over an extended range |
|
H04B 10/114
|
Indoor or close-range type systems |
|
H04B 10/116
|
Visible light communication |
|
H04B 10/118
|
Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication |
|
H04B 10/135
|
using single mode transmission |
|
H04B 10/142
|
Coherent homodyne or heterodyne systems |
|
H04B 10/145
|
Transmitters |
|
H04B 10/148
|
Receivers |
|
H04B 10/152
|
Non-coherent direct-detection systems |
|
H04B 10/155
|
Transmitters |
|
H04B 10/158
|
Receivers |
|
H04B 10/207
|
using a star-type coupler |
|
H04B 10/213
|
using a T-type coupler |
|
H04B 10/255
|
Self-phase modulation [SPM] |
|
H04B 10/272
|
Star-type networks |
|
H04B 10/275
|
Ring-type networks |
|
H04B 10/278
|
Bus-type networks |
|
H04B 10/291
|
Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form |
|
H04B 10/293
|
Signal power control |
|
H04B 10/294
|
Signal power control in a multiwavelength system, e.g. gain equalisation |
|
H04B 10/296
|
Transient power control, e.g. due to channel add/drop or rapid fluctuations in the input power |
|
H04B 10/297
|
Bidirectional amplification |
|
H04B 10/299
|
Signal waveform processing, e.g. reshaping or retiming |
|
H04B 10/508
|
Pulse generation, e.g. generation of solitons |
|
H04B 10/516
|
Details of coding or modulation |
|
H04B 10/524
|
Pulse modulation |
|
H04B 10/532
|
Polarisation modulation |
|
H04B 10/548
|
Phase or frequency modulation |
|
H04B 10/556
|
Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK] |
|
H04B 10/564
|
Power control |
|
H04B 10/572
|
Wavelength control |
|
H04B 10/588
|
Compensation for non-linear transmitter output in external modulation systems |
|
H04B 10/2507
|
Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion |
|
H04B 10/2513
|
Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion |
|
H04B 10/2519
|
Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using Bragg gratings |
|
H04B 10/2525
|
Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using dispersion-compensating fibres |
|
H04B 10/2531
|
Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using spectral inversion |
|
H04B 10/2537
|
Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to scattering processes, e.g. Raman or Brillouin scattering |
|
H04B 10/2543
|
Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to fibre non-linearities, e.g. Kerr effect |
|
H04B 10/2557
|
Cross-phase modulation [XPM] |
|
H04B 10/2563
|
Four-wave mixing [FWM] |
|
H04B 10/2569
|
Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to polarisation mode dispersion [PMD] |
|
H04B 10/2575
|
Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier |
|
H04B 10/2581
|
Multimode transmission |
|
H04B 10/2587
|
Arrangements specific to fibre transmission using a single light source for multiple stations |
|
H04B 11/00
|
Transmission systems employing ultrasonic, sonic or infrasonic waves |
|
H04B 13/00
|
Transmission systems characterised by the medium used for transmission, not provided for in groups |
|
H04B 13/02
|
Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy |
|
H04B 14/00
|
Transmission systems not characterised by the medium used for transmission |
|
H04B 14/02
|
Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation |
|
H04B 14/04
|
Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation |
|
H04B 14/06
|
Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation |
|
H04B 14/08
|
Transmission systems not characterised by the medium used for transmission characterised by the use of a sub-carrier |
|
H04B 15/00
|
Suppression or limitation of noise or interference |
|
H04B 15/02
|
Reducing interference from electric apparatus by means located at or near the interfering apparatus |
|
H04B 15/04
|
Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder |
|
H04B 15/06
|
Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder by local oscillators of receivers |
|
H04B 17/00
|
MonitoringTesting |
|
H04B 17/02
|
of relay systems |
|
H04B 17/10
|
MonitoringTesting of transmitters |
|
H04B 17/11
|
MonitoringTesting of transmitters for calibration |
|
H04B 17/12
|
MonitoringTesting of transmitters for calibration of transmit antennas, e.g. of amplitude or phase |
|
H04B 17/13
|
MonitoringTesting of transmitters for calibration of power amplifiers, e.g. of gain or non-linearity |
|
H04B 17/14
|
MonitoringTesting of transmitters for calibration of the whole transmission and reception path, e.g. self-test loop-back |
|
H04B 17/15
|
Performance testing |
|
H04B 17/16
|
Test equipment located at the transmitter |
|
H04B 17/17
|
Detection of non-compliance or faulty performance, e.g. response deviations |
|
H04B 17/18
|
Monitoring during normal operation |
|
H04B 17/19
|
Self-testing arrangements |
|
H04B 17/20
|
MonitoringTesting of receivers |
|
H04B 17/21
|
MonitoringTesting of receivers for calibrationMonitoringTesting of receivers for correcting measurements |
|
H04B 17/23
|
Indication means, e.g. displays, alarms or audible means |
|
H04B 17/24
|
MonitoringTesting of receivers with feedback of measurements to the transmitter |
|
H04B 17/26
|
MonitoringTesting of receivers using historical data, averaging values or statistics |
|
H04B 17/27
|
MonitoringTesting of receivers for locating or positioning the transmitter |
|
H04B 17/29
|
Performance testing |
|
H04B 17/30
|
MonitoringTesting of propagation channels |
|
H04B 17/40
|
MonitoringTesting of relay systems |
|
H04B 17/309
|
Measuring or estimating channel quality parameters |
|
H04B 17/318
|
Received signal strength |
|
H04B 17/327
|
Received signal code power [RSCP] |
|
H04B 17/336
|
Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] |
|
H04B 17/345
|
Interference values |
|
H04B 17/354
|
Adjacent channel leakage power |
|
H04B 17/364
|
Delay profiles |
|
H04B 17/373
|
Predicting channel quality parameters |
|
H04B 17/382
|
MonitoringTesting of propagation channels for resource allocation, admission control or handover |
|
H04B 17/391
|
Modelling the propagation channel |
