Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 7 - Radio transmission systems, i.e. using radiation field
Patents for H04B 7 - Radio transmission systems, i.e. using radiation field (186,426)
01/1982
01/12/1982CA1116284A1 Apparatus and system for wireless reception and transmission of coded audio and/or sonic alarm signals
01/12/1982CA1116264A1 Method of transmitting a plurality of information signals on a common carrier frequency range from different transmitters to a receiver
01/07/1982WO1982000074A1 Communication system for providing non-interfering multiple signals over individual common carrier channels
01/06/1982EP0043154A1 Radiocommunication system in which a receiving station monitors a number of transmitters by time division
01/05/1982US4309771 Digital radio transmission system
01/05/1982US4309764 Technique for increasing the rain margin of a satellite communication system
01/05/1982CA1115776A1 Multitransmitter digital signaling system
12/1981
12/30/1981EP0042623A1 Satellite communication system for switching formats with reference to super-frame time slots
12/30/1981EP0042529A1 Method and arrangement for cellular operation of a repeater trunking system
12/29/1981US4308613 Simplex, party-line electromagnetic data packet transmission system with a self seeking alternate routing capability
12/23/1981EP0042144A1 Method and arrangement for the simultaneous transmission of information by several common-wave transmitters
12/22/1981US4307461 Call processor for a satellite communications controller
12/15/1981CA1114450A1 Automatic police emergency locator system
12/09/1981EP0041289A1 An improved transceiver
12/02/1981EP0040731A1 Method and arrangement for the simultaneous transmission of information by several common-wave transmitters
12/01/1981US4304004 Apparatus for transmission and reception of frequency modulated digital communication signals
12/01/1981CA1113620A1 Base station feedback reporting system
12/01/1981CA1113546A1 Space diversity receiver with combined step and continuous phase control
11/1981
11/24/1981US4302842 Digital radio repeater with regenerator
11/24/1981CA1113155A1 Duplex microwave radio system
11/17/1981US4301539 Supervising system for use in radio transmission
11/17/1981US4301533 Technique for increasing the rain margin of a TDMA satellite communication system
11/11/1981EP0030551A4 A technique for increasing the rain margin of a communication system.
11/10/1981CA1112300A1 Circuit and method for reducing polarization crosstalk caused by rainfall
11/03/1981US4298979 Decoding TIM bus structure
11/03/1981US4298178 Roving geosynchronous orbit satellite maintenance system
10/1981
10/28/1981EP0038518A1 Mobile radio network
10/14/1981EP0037770A1 Transmission system for digital data packets using a particular type of synchronization words
10/14/1981EP0037519A1 Mobile radio network with synchronization of the whole network
10/14/1981EP0037458A2 Time division multiple access satellite communications controller
10/13/1981US4295221 Method and apparatus at one-way or two-way information link to effect interference suppression
10/13/1981US4295217 Apparatus to reduce the effect of a mid-talkspurt freeze-out
10/13/1981US4295139 Method for transmitting airport weather information
10/13/1981CA1110708A1 Sectored antenna receiving system
10/13/1981CA1110706A1 Synchronizing means for a two-way communication system
10/13/1981CA1110705A1 Radio transmitter time out timer
10/07/1981EP0037071A2 Method of monitoring analogous or digital mobile radio connections
10/07/1981EP0037070A2 Mobile radio network
10/07/1981EP0037068A2 Mobile radio system
10/06/1981US4293955 Diversity reception system
10/06/1981US4293954 Receiving system for transmitting information transmitted by a mobile transmitter to a central station
10/06/1981US4293945 Multichannel correlation receiver for determining depolarization of signals along signal propagation paths
10/06/1981CA1110329A1 Antenna sampling system
09/1981
09/29/1981US4292685 Apparatus and method for controlling crosspolarization of signals in a frequency reuse system
09/29/1981US4292683 Guard band reduction in open loop TDMA communications
09/23/1981EP0036146A1 Mobile radio network
09/23/1981EP0036139A2 Diversity reception system
09/23/1981EP0036037A1 Transmit-receive diversity arrangement
09/22/1981US4291410 Multipath diversity spread spectrum receiver
09/22/1981US4291409 Spread spectrum communications method and apparatus
09/15/1981US4290144 Radio communications systems
09/09/1981EP0035233A2 Method and apparatus for multiplexing data of a plurality of data ports in ground stations of a TDMA satellite communication system
09/09/1981EP0035232A2 Method and apparatus for the initial acquisition of synchronization for a station in a TDMA satellite communication network
09/09/1981EP0035231A2 TDMA satellite communications system
09/09/1981EP0035230A2 Time division multiple access broadcasting, multipoint, and conferencing communication apparatus and method
09/08/1981US4288868 Satellite communication system for speech and telegraphy
09/01/1981US4287598 Cooperating arrangement for diversity stations
09/01/1981US4287588 Multiple access, time-division multiplex, satellite communications system
09/01/1981US4287577 Interleaved TDMA terrestrial interface buffer
08/1981
08/18/1981US4285064 TDMA Satellite communication system
08/18/1981US4285058 Waveform correction by sampling
08/11/1981US4283795 Adaptive cross-polarization interference cancellation arrangements
08/11/1981US4283693 Amplitude tilt compensating apparatus
08/11/1981CA1106918A1 Two-way communications system having remote channel selection
08/05/1981EP0033256A1 Radioelectric diversity transmission system of simple and economic structure
08/05/1981EP0033149A2 Switch matrix apparatus for satellite-switched TDMA system or the like
07/1981
07/28/1981US4281413 Multichannel radio telephone system
07/23/1981WO1981002081A1 Multiple carrier microwave relay link
07/22/1981EP0032227A1 Antenna for earth receiving station
07/21/1981US4280219 Digital memory system
07/14/1981US4279036 Secure communication system
07/14/1981US4278978 Baseband signal combiner for large aperture antenna array
07/14/1981CA1105091A1 Method and apparatus for cancelling interference between area coverage and spot coverage antenna beams
07/08/1981EP0031486A2 Apparatus to reduce the effect of a mid-talkspurt freeze-out
07/07/1981US4277845 Meteor scatter burst communication system
07/01/1981EP0030998A1 Voice and data transmission system
06/1981
06/30/1981US4276653 Device for receiving radio call messages
06/30/1981US4276651 Clock circuitry for a data communication system
06/30/1981US4276638 Frequency multiplexed radio link apparatus
06/30/1981CA1104250A1 Method for controlling an antenna of an earth station for telecommunication via satellites
06/24/1981EP0030551A1 A technique for increasing the rain margin of a communication system.
06/09/1981CA1102880A1 Method and apparatus to permit substantial cancellation of interference between a received first and second signal
06/02/1981US4271525 Adaptive diversity receiver for digital communications
06/02/1981US4271524 Spread spectrum FH-MFSK receiver
06/02/1981US4271504 Frequency modulators for use in microwave links
05/1981
05/26/1981US4270207 Combined ECCM/diversity tropospheric transmission system
05/26/1981US4270048 Apparatus for determining the angle of incident electromagnetic radiation
05/06/1981EP0028188A1 Beacon system for stage-by-stage transmission of information
05/06/1981EP0028007A1 Radio system with synchronisation of the subscribers' equipments
05/05/1981US4266296 Multipath distortion compensation circuit and method
04/1981
04/29/1981EP0027523A1 Method for maintaining synchronization in a TDMA satellite communication system
04/28/1981US4264908 Adaptive polarization separation
04/16/1981WO1981001087A1 Adaptive cross-polarization interference cancellation arrangements
04/15/1981EP0027006A2 Decoding terrestrial interface modules bus structure
04/15/1981EP0026924A1 Adaptive cross-polarization interference cancellation arrangements
04/14/1981US4262356 Method and system for synchronizing a TDMA communication network comprising a satellite equipped with several directional beam antennas transmitting signals at various frequencies
04/08/1981EP0026635A1 Apparatus and method for data reorganization
04/08/1981EP0026603A1 Microprogrammable TDMA terminal controller
04/08/1981EP0026602A1 A method of writing into and reading from the memory of a buffer memory system and a buffer memory system using such a method
04/08/1981EP0026329A2 Communications controller for a time division multiple access satellite communication network
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