Patents
Patents for H04B 7 - Radio transmission systems, i.e. using radiation field (186,426)
11/1988
11/09/1988EP0290161A2 Vehicle communication system using roadway loops
11/08/1988US4783844 Apparatus for transmitting and recording signals
11/08/1988US4783843 Split band filter for cellular mobile radio
11/08/1988US4783799 Electronic communications and control system
11/08/1988US4783779 Frequency assignment system in FDMA communication system
11/03/1988WO1988008650A1 Microcellular communications system using macrodiversity
11/03/1988WO1988008649A1 Portable communications receiver with separate information presentation means and improved battery saving function
11/03/1988WO1988008648A1 Method for dynamically allocating data channels on a trunked communication system
11/03/1988DE3713086A1 Communications system with space diversity
11/02/1988EP0289384A1 Method for automatically selecting a directional reception antenna among a plurality of reception antennae
11/02/1988EP0289037A2 Digital demodulation system having independently operating cross-polarization cancellers
11/02/1988EP0288904A2 Microcellular communications system using macrodiversity
11/01/1988CA1244153A1 Method of initially establishing burst acquisition in tdma satellite communications system and arrangement therefor
11/01/1988CA1244090A1 Cryptographic system for direct broadcast satellite network
10/1988
10/25/1988US4780885 Frequency management system
10/25/1988US4780715 Communication system capable of interruption talk during data transmission
10/25/1988CA1243788A1 Method of implementing burst acquisition control in tdma system
10/20/1988WO1988008140A1 Mobile radio network for nationwide communications
10/19/1988EP0287305A2 Radio communication apparatus including power supply device
10/19/1988EP0286665A1 Device and method for the transmission or storage of information optimising the use of the band-pass.
10/12/1988EP0286614A1 Method and equipment for synchronizing and transmitting information in a radio communication network
10/12/1988EP0286366A2 Space diversity receiving system
10/11/1988US4777657 Computer controlled broadband receiver
10/11/1988US4777655 Control signal receiving system
10/11/1988US4777653 Apparatus for controlling transmission power over a digital radio communication channel
10/11/1988US4777633 Base station for wireless digital telephone system
10/11/1988CA1243079A1 Power control system for satellite communications
10/04/1988US4776035 For use in an adaptive link power control satellite communications network
10/04/1988US4776034 Radio communication system operable in cooperation with a VOX system
10/04/1988US4776032 Repeater for a same frequency with spillover measurement
10/04/1988US4776000 Telephone communications system with portable handsets
10/04/1988US4775974 Multipoint satellite packet communication system
10/04/1988CA1242767A1 Automatic frequency and gain control circuit
09/1988
09/29/1988DE3813820A1 Radio telecontrol system and method for operating the system
09/27/1988US4774708 Station of a TDMA communication network capable of quickly changing communication traffic without causing an overlap between transmission bursts
09/27/1988US4774707 Random access communication system with scheduled data transmission and asynchronous contention scheduling
09/27/1988US4774705 Switch matrix with acoustic delay for TDMA signal storage on-board a satellite
09/27/1988CA1242537A1 Multiple access communications system
09/27/1988CA1242487A1 Steered-beam satellite communication system
09/20/1988US4773083 In a communication system
09/20/1988CA1242250A1 Signal quality steered diversity
09/15/1988DE3805343A1 Kommunikationsanlage Communication system
09/14/1988EP0282347A2 Low-power multi-function cellular television system
09/14/1988EP0282087A2 Radio channel search system
09/14/1988EP0282028A2 Multiple access communication system
09/13/1988US4771398 Method and apparatus for optical RF phase equalization
09/13/1988US4771397 Method and apparatus for optical RF amplitude equalization
09/13/1988CA1242040A1 Cordless telephone apparatus having means for synchronizing channel scanning of fixed and portable units
09/13/1988CA1242038A1 Scpc communication system including a voice-activated transmission power controller
09/13/1988CA1241998A1 Cross-polarization interference cancellation
09/08/1988DE3706240A1 Method and radio paging system for selectively transmitting calls to mobile subscribers
09/07/1988EP0281308A2 Decision-directed control circuit and method of adjusting decision-directed apparatus
09/06/1988US4769825 Communications transmission system for electromagnetic waves
09/06/1988CA1241782A1 Mf signal transmitting control apparatus/method for use in cordless telephone system
08/1988
08/31/1988EP0280543A2 Paging system
08/31/1988EP0280319A2 Radio pager receiver capable of readily checking whether or not memory backup is correct
08/31/1988EP0280196A2 Apparatus for managing channels of a radio communication system
08/31/1988EP0279997A2 Apparatus and method for data transmission using two crossed polarisations of an electro-magnetic wave
08/30/1988US4768219 Cordless telephone
08/30/1988US4768187 In a radio communication system
08/30/1988CA1241379A1 Method of monitoring a radio link between a base station and a mobile station
08/25/1988WO1988006387A1 A receiver for communications satellite down-link reception
08/24/1988EP0279080A2 Radio data transmission system
08/24/1988EP0278982A1 Filter interconnection matrix.
08/23/1988US4766600 Characterization of digital radio signals
08/23/1988US4765753 Method and apparatus for handing-over a radio connection from one radio cell to another radio cell of a digital radio transmission system
08/23/1988CA1241066A1 Technique for improving radio system performance during fading
08/16/1988US4764982 Communicating with a mobile vehicle
08/16/1988US4764979 Direct relay equipment
08/11/1988WO1988005981A1 Tdma communications system with adaptive equalization
08/10/1988EP0277380A1 Method for adjusting the delay between TDMA information transmission stations and a system for which the method is carried out
08/10/1988EP0277173A1 Satellite communications system having frequency addressable high gain downlink beams.
08/09/1988US4763325 Demand assigned reformatting with an overflow area for time division multiple access communication
08/09/1988US4763322 Digital radio transmission system with variable duration of the time slots in the time-division multiplex frame
08/09/1988US4763129 SS-TDMA technique telecommunication satellite systems
08/09/1988CA1240422A1 Terminal control device for reference station in tdma satellite communication system
08/03/1988EP0277014A2 Service and entertainment communication system
08/03/1988EP0276932A2 Satellite receiver computer card
08/03/1988CN87100491A Single frequency duplexer communication system
08/02/1988US4761827 Polarity switch for satellite television receiver
08/02/1988US4761826 Signal separating device
08/02/1988US4761822 Burst-mode two-way radio communications system
08/02/1988CA1239995A1 Digital signal repeater including means for controlling a transmitter
07/1988
07/28/1988WO1988005620A1 Method of controlling the connection of cordless telephone equipment
07/27/1988EP0275751A1 Method and apparatus for the digital transmission of voice signals by way of a radio channel
07/27/1988EP0275527A1 Method for the transmission and/or the use at the reception of additional information within a radio signal
07/27/1988EP0094420B1 Data muting method and apparatus for radio communications systems
07/20/1988EP0275118A2 TDMA system and method capable of individually controlling electric power of bursts
07/20/1988EP0274958A1 Device for compensating the Doppler effect produced by the relative motion between receiver and transmitter, tuned at the same frequency, in a radioreceiver
07/20/1988EP0274857A1 Mobile radio systems
07/20/1988EP0274834A1 Fast sequencing demodulation method and apparatus
07/20/1988EP0274650A1 Bidirectionnel information transmission system between a monitor station on the ground and a mobile station
07/19/1988US4759051 Communications system
07/19/1988US4759036 Decision-directed control circuit
07/19/1988US4759016 TDMA communication system having common local path medium and local time slot for intraoffice calls
07/14/1988WO1988005247A1 System for over-the-air reprogramming of communication receivers
07/14/1988WO1988005231A1 Multiple frequency radio system employing pulse repeaters
07/14/1988WO1988005214A1 Automatic antenna tuning system for portable communication devices
07/14/1988DE3644174A1 Method for transmitting information via satellites
07/14/1988DE3644168A1 Method for data transmission via satellite by means of spread spectra and small ground stations