Patents
Patents for H04J 13 - Code division multiplex systems (21,510)
08/1996
08/08/1996WO1996024206A1 Data transmission method, transmitter, and receiver
08/08/1996WO1996024198A1 Spectrum spreading communication device and communication system
08/06/1996US5544196 Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system
08/06/1996US5544167 Transmission method for CDMA radiotelephone communications, and apparatuses for implementing such method
08/06/1996US5544156 Direct sequence CDMA coherent uplink detector
08/01/1996WO1996023376A2 Apparatus and method for generating pseudorandom quantities based upon radio channel characteristics
08/01/1996WO1996013914A3 Sectorized communication system and methods useful therefor
08/01/1996CA2210714A1 Apparatus and method for generating pseudorandom quantities based upon radio channel characteristics
07/1996
07/31/1996EP0607359A4 Transmitter power control system.
07/31/1996EP0584241A4 Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system
07/30/1996US5541954 Frequency hopping communication method and apparatus changing a hopping frequency as a result of a counted number of errors
07/25/1996WO1996022639A1 Method and apparatus for the formatting of data for transmission
07/25/1996WO1996022638A2 Orthogonal code division multiple access communication system having multicarrier modulation
07/24/1996EP0722636A1 Method of increasing signal quality by adjusting the spreading ratio in a cdma cellular radio system
07/18/1996WO1996021976A1 Pipelined cell site base station receiver for multiple spread spectrum signals
07/17/1996EP0721703A1 Method and apparatus for performing code acquisition in a cdma communications system
07/17/1996CN1127051A CDMA demodulation circuit and demodulating method
07/17/1996CN1126930A A transmission power control method and a communication system using the same
07/17/1996CN1126929A A transmission power control method and a transmission power control apparatus
07/16/1996US5537685 Method of establishing inter-base-station synchronization and mobile radio communication system using the method
07/16/1996US5537397 Method of providing multiple access to a data communications channel
07/16/1996US5537396 Diffusion code generating method for spread spectrum communication
07/11/1996WO1996021295A1 Spread-spectrum system and method
07/10/1996EP0721264A1 Method and device for receiving code-division multiplex signal
07/10/1996EP0720797A1 Multirate serial viterbi decoder for code division multiple access system applications
07/10/1996EP0720794A1 A method and apparatus for identifying a coded communication signal
07/10/1996CN1126540A Mobile radio communication system
07/09/1996US5535239 Data burst randomizer
07/09/1996US5534845 Advanced automotive automation and security system
07/04/1996WO1996020544A1 Device and method for initially synchronizing spread-spectrum code of cdma transmission system
07/03/1996EP0720327A2 Device and method for generating pseudorandom noise sequence
07/03/1996EP0719491A1 Method of providing service and data rate negotiation in a mobile communication system
07/03/1996EP0719481A1 Method and apparatus for simulating user interference in a spread spectrum communications system
07/03/1996EP0719480A1 Method and apparatus for simulating interference received by subscribers in a spread spectrum communications system
07/03/1996CN1126010A Method and device for receiving code-division multiplex signal
07/02/1996US5533014 Non-continuous transmission for seamless handover in DS-CDMA systems
07/02/1996US5533013 Communication method and system
07/02/1996US5533012 Code-division multiple-access system with improved utilization of upstream and downstream channels
07/02/1996US5533010 Channel switching control method and a cordless telephone system using the same
07/02/1996US5532695 Power of two length pseudorandom noise sequence generator
06/1996
06/27/1996WO1996019883A1 A practical means for digital generation and combination of a multiplicity of cdma/fdma signals
06/27/1996CA2165595A1 Device and method for generating pesudorandom noise sequence
06/26/1996EP0718983A1 Differential modulation spread spectrum
06/26/1996EP0717913A1 Data transmission method, base station, and subscriber terminal
06/26/1996EP0613599A4 A spread-time code division multiple access technique with arbitrary spectral shaping.
06/26/1996CN1125498A Receiver for a direct sequence spread spectrum orthogonally encoded signal employing rake principle
06/25/1996US5530717 Smooth spectrum spreading with a small spreading factor
06/25/1996US5530716 Method and apparatus for identifying a coded communication signal
06/25/1996US5530697 For demodulating a baseband signal modulated by a pn code
06/20/1996WO1996019050A1 Network entry channel for cdma systems
06/20/1996CA2165034A1 Transmission process having spectrum spread phase differential modulation and demodulation using orthogonal pseudorandom sequences
06/19/1996EP0717520A2 CDMA communication system in which interference removing capability is improved
06/19/1996CN1125026A A communication method for an adaptive direct sequence CDMA communication system
06/19/1996CN1124904A Controlling signal, synchronizing method for receiver and corresponding receiver
06/18/1996US5528635 Synchronization detecting circuit
06/18/1996US5528624 DS/CDMA receiver using parallel-operating multi-purpose correlators
06/12/1996EP0716520A1 Cdma demodulation circuit and demodulating method
06/12/1996EP0716514A1 A method and an arrangement for radio communication
06/12/1996CN1124552A Method and system for CDMA mobile radio communication
06/12/1996CN1124439A Method of construction a spreading code associated with one user of a direct sequence code division multiple access digital transmission system and corresponding method of generating a table
06/11/1996US5526404 Worldwide satellite telephone system and a network coordinating gateway for allocating satellite and terrestrial gateway resources
06/06/1996WO1996017446A1 Data transmission method, transmitter, and receiver
06/05/1996EP0715432A2 Interleaver and address generator for mobile communication systems
06/05/1996EP0715422A2 Data synchronization in a CDMA communication system
06/05/1996EP0714575A1 Method and apparatus for creating a composite waveform
05/1996
05/21/1996US5519736 Synchronous pseudo-noise code sequence generation circuit
05/21/1996US5519706 Dynamic user registration method in a mobile communications network
05/15/1996EP0712219A2 Variable transmission bit rate discrimination method and apparatus
05/14/1996CA2086009C Power control of a direct sequence cdma radio
05/09/1996WO1996013914A2 Sectorized communication system and methods useful therefor
05/09/1996WO1996013907A2 Wireless dsss tdma communications system
05/09/1996CA2200978A1 Sectorized communication system and methods useful therefor
05/08/1996EP0711056A2 Transmission bit rate discrimination method and apparatus
05/07/1996US5515439 Exchange certificate for one way validation of information
05/07/1996US5515396 Method and apparatus for selecting a spreading code in a spectrum spread communication system
04/1996
04/24/1996EP0708534A2 Spread spectrum receiving apparatus
04/24/1996CN1121297A Reverse channel synchronization method in code division multiple access system
04/24/1996CN1121296A CDMA comminication with a propagation delay between a base and a mobile station taken into account
04/23/1996US5511073 Method and apparatus for the formatting of data for transmission
04/23/1996US5511068 Mobile communication system capable of transmitting and receiving a radio signal obtained by TDMA and CDMA without interference
04/17/1996EP0707386A2 Multi-user communication system employing spread signatures
04/11/1996WO1996010874A1 Serial linked interconnect for summation of multiple waveforms on a common channel
04/11/1996WO1996010873A1 Multipath search processor for a spread spectrum multiple access communication system
04/11/1996CA2174243A1 Multipath search processor for a spread spectrum multiple access communication system
04/10/1996EP0705510A1 Receiver for a direct sequence spread spectrum orthogonally encoded signal employing rake principle
04/10/1996EP0705509A1 An optical communications system for transmitting information signals having different wavelengths over a same optical fiber
04/10/1996EP0705500A1 Method and apparatus for utilizing multiple spreading codes in a communication system
04/10/1996CN1120270A CDMA receiving apparatus
04/09/1996US5506864 CDMA communications and geolocation system and method
04/09/1996US5506863 Method and apparatus for operating with a hopping control channel in a communication system
04/04/1996WO1996010300A1 Enhanced frequency agile radio
04/02/1996US5504776 Spread spectrum communication system and transmitter-receiver
04/02/1996US5504775 Multi-user spread spectrum communication system
04/02/1996US5504773 Method and apparatus for the formatting of data for transmission
04/02/1996US5504750 Method and apparatus for a radio system operating on shared communication channels
03/1996
03/20/1996EP0701753A1 A communication method for an adaptive direct sequence cdma communication system
03/19/1996US5500871 Spread spectrum communication transmitter an LSI therefor
03/19/1996US5500856 Transmission de-correlator for eliminating interference in a CDMA communication system
03/14/1996WO1996008077A1 Transmission and reception of cpm spread-spectrum communications
03/14/1996CA2199525A1 Transmission and reception of cpm spread-spectrum communications