Patents
Sitemap › H04 - Electric communication technique › H04J - Multiplex communication › H04J 13 - Code division multiplex systems
Patents for H04J 13 - Code division multiplex systems (21,510)
06/1992
06/17/1992EP0489794A1 Improvements in a spread-spectrum multiplexed transmission system
06/08/1992WO1992010890A1 Cdma microcellular telephone system and distributed antenna system therefor
05/1992
05/29/1992WO1992009154A1 A radio transceiver system
05/27/1992EP0486834A1 Multi-access method and mobile radiocommunication system implementing said multi-access method
05/20/1992CN1061312A System and method for generating signal waveforms in cdma cellular telephone system
05/20/1992CN1061311A Diversity receiver in cdma cellular telephone system
05/19/1992US5115448 Spread spectrum receiver
05/06/1992EP0484065A2 Direct sequence spread spectrum (DSS) communications system with frequency modulation utilized to achieve spectral spreading
05/05/1992US5111479 Spread spectrum receiver and carrier sense circuit therefor
05/05/1992US5111416 Pseudo random noise code generator for selectively generating a code or its mirror image from common data
04/1992
04/28/1992US5109390 Diversity receiver in a cdma cellular telephone system
04/28/1992CA1299658C Demodulation method
04/21/1992US5107487 Power control of a direct sequence CDMA radio
04/15/1992EP0280718B1 Hidden preamble for frequency hopped synchronization
04/07/1992USRE33875 Spread-spectrum communication system
04/07/1992US5103459 System and method for generating signal waveforms in a cdma cellular telephone system
03/1992
03/31/1992US5101417 Phase controlled synchronization for direct sequence spread-spectrum communication systems
03/31/1992US5101406 Wireless communications system
03/25/1992EP0476129A1 Communication system
03/25/1992EP0476127A1 Integrated cellular communications system.
03/24/1992US5099495 Spread spectrum communication device
03/17/1992US5097485 Hf high data rate modem
03/03/1992CA1296772C Digital radio transmission system for a cellular network, using the spread spectrum method
02/1992
02/20/1992WO1992003002A1 Novel spread spectrum codec apparatus and method
01/1992
01/28/1992US5084901 Sequential chirp modulation-type spread spectrum communication system
01/22/1992EP0467640A2 A method of simulating the state of a linear feedback shift register
01/15/1992EP0349603B1 Process and arrangement for equalizing dispersive, linear or approximately linear channels for transmitting digital signals
01/14/1992US5081645 Novel spread spectrum codec apparatus and method
01/09/1992WO1992000639A1 System and method for generating signal waveforms in a cdma cellular telephone system
01/08/1992EP0465165A2 Phase controlled synchronization for direct sequence spread-spectrum communication systems
01/07/1992US5079768 Method for frequency sharing in frequency hopping communications network
01/07/1992CA1294074C Spread spectrum multiple access communication using satellite or terrestrial repeaters
01/07/1992CA1293999C Earth station capable of effectively using a frequency band of asatellite
12/1991
12/31/1991US5077754 Tau-dither circuit
12/17/1991US5073909 Method of simulating the state of a linear feedback shift register
12/17/1991US5073900 Integrated cellular communications system
12/17/1991US5073899 Transmission system for sending two signals simultaneously on the same communications channel
12/17/1991US5073898 Communication device
12/11/1991EP0460862A2 Global positioning system receiver
11/1991
11/25/1991CA2033467A1 Method and apparatus for the modulation and demodulation of spread spectrum radio signals
11/05/1991US5063573 Method for the equalization of dispersive, linear or approximately linear channels for the transmission of digital signals and arrangement for carrying out the method
11/05/1991US5063560 Spread-spectrum multiplexed transmission system
10/1991
10/29/1991US5062122 Delay-locked loop circuit in spread spectrum receiver
10/29/1991US5062121 Spread spectrum communication device
10/17/1991WO1991015911A1 Communication system
10/09/1991EP0450382A2 Method for frequency sharing in a frequency hopping communications network
10/08/1991US5056108 Communication system
09/1991
09/25/1991EP0447987A2 Method for synchronizing a wide area network without global synchronization
09/25/1991CN1054875A Shared-carrier frequency hopping
09/24/1991CA1289622C Code division multiplexed acknowledge back paging system
09/20/1991WO1991015071A1 Integrated cellular communications system
09/11/1991EP0446024A2 Spread-spectrum communication system
09/10/1991US5048057 Wireless local area network
09/10/1991US5048052 Spread spectrum communication device
08/1991
08/28/1991WO1991013502A1 Shared-carrier frequency-hopping
08/22/1991DE4104096A1 Spread-spektrum-empfangsvorrichtung Spread spectrum receiving apparatus
08/15/1991CA2035838A1 Spread spectrum receiving device
08/07/1991EP0439925A2 Maximum likelihood decoding with interference detection for frequency-hopped coded modulation systems
08/07/1991EP0439807A2 Code shift keying communication system
08/06/1991US5038363 Correlation processing device using a surface acoustic wave convolver
08/06/1991US5038362 Spread spectrum receiver
07/1991
07/30/1991US5036330 Ranging system using correlation between two spread spectrum wave signals
07/24/1991EP0242367B1 Asynchronous communication system
07/17/1991EP0436714A1 Code distribution multiple access communication system with user voice activated carrier and code synchronization.
07/09/1991US5031191 Spread spectrum signal demodulation circuit
07/02/1991US5029183 Packet data communication network
07/02/1991US5029181 Automatic calibration device for direct spectrum spread receiver
06/1991
06/13/1991DE4025026A1 Code Division multiplexer with serial to parallel conversion - for values of PCM signal in half or full periods of sinusoidal AC
06/11/1991US5023887 Data transmission system using spread spectrum communication
06/04/1991US5022047 Spread spectrum correlator
06/04/1991US5022046 Narrowband/wideband packet data communication system
05/1991
05/28/1991US5020075 Direct sequence spread spectrum modulation apparatus
05/22/1991EP0428444A1 Method for synchronization search during reception of a spread spectrum modulated signal
05/22/1991EP0428046A2 Data transmission methods and apparatus, data processing apparatus and a neural network
05/16/1991WO1991007036A1 Diversity receiver in a cdma cellular telephone system
05/08/1991CA2029363A1 Data transmission methods and apparatus, data processing apparatus and a neural network
04/1991
04/23/1991US5010557 Mobile radio transmitter using band expanding method
04/17/1991EP0422467A2 HF high data rate modem
04/16/1991US5008899 Receiver for spectrum spread communication
04/16/1991US5008898 Carrier modulating device for a spread spectrum communication device
04/04/1991WO1991004618A1 Random access multiple user communication system
04/03/1991EP0420230A2 Feed forward spread spectrum signal processor
04/02/1991US5005183 Wireless telephone system
04/02/1991US5005169 Frequency division multiplex guardband communication system for sending information over the guardbands
03/1991
03/20/1991CN1050116A Digital transmission system using subband coding of digital signal
03/13/1991EP0416476A2 Circuit for connecting plural mutual decoupled frequency hopping transmitters to an antenna
03/08/1991CA2023568A1 Circuit arrangement for connecting two or more frequency-hopping transmitters to an antenna in a manner providing isolation between the transmitters
03/02/1991WO1991003892A1 Improvements in a spread-spectrum multiplexed transmission system
03/02/1991CA2064898A1 Spread-spectrum multiplexed transmission system
02/1991
02/19/1991US4995052 Demodulation method
02/12/1991US4993044 Spread-spectrum communication receiver
02/12/1991CA1280228C Digital radio transmission system
02/05/1991CA1279898C Spread-spectrum communication apparatus
02/04/1991WO1991002415A1 Code distribution multiple access communication system with user voice activated carrier and code synchronization
01/1991
01/08/1991US4984247 Digital radio transmission system for a cellular network, using the spread spectrum method
01/02/1991EP0405074A2 Hand-held bar code scanner
01/02/1991CA1278626C Asynchronous communications system
12/1990
12/27/1990WO1990016122A1 Base station for a mobile digital system with the frequency hopping technique
12/27/1990EP0404596A2 Frequency setting method and apparatus for radio transmission apparatus
12/27/1990EP0239639B1 Rapid frequency-hopping time synchronization
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