Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 23 - Apparatus or local circuits for systems other than those covered by groups
Patents for H04L 23 - Apparatus or local circuits for systems other than those covered by groups (1,371)
07/2001
07/06/2001CA2330403A1 Method and apparatus for monopulse operation of an array antenna
07/04/2001CN1302485A Data communication and radio system
07/04/2001CN1302124A Method for producing orthogonal varying-length expanding frequency code and its device
06/2001
06/26/2001US6252920 Host signal processor modem and telephone
06/07/2001WO2001041383A2 Code shift keying transmitter for use in a spread spectrum communications system
06/06/2001EP1104955A1 System and method for generating signal waveforms in a CDMA cellular telephone system
03/2001
03/22/2001WO2001020833A1 Data communication method, bidirectional data communication method, data communication system, bidirectional data communication system, data transmitter, and data receiver
02/2001
02/13/2001CA2184448C Csk communication system and method for spread spectrum communication
01/2001
01/03/2001EP1065849A1 Transmission method for multi-MOK modulation/demodulation
12/2000
12/27/2000CN1278377A Method and apapratus for tracking a communication signal in a wireless communication system
11/2000
11/30/2000WO2000072540A1 Equalization techniques for communication systems using orthogonal signaling
10/2000
10/25/2000CN1057884C System and method for generating single waveforms in CDMA celular telephone system
10/19/2000WO2000062461A2 Interleavers and de-interleavers
10/04/2000EP1041781A1 Soft output metrics generation for symbol detectors
10/04/2000CN1268829A Soft output prodn. used for code element detector
09/2000
09/26/2000US6125149 Successively refinable trellis coded quantization
09/24/2000CA2299903A1 Soft output metrics generation for symbol detectors
09/19/2000US6122726 Data pipeline system and data encoding method
07/2000
07/12/2000EP1018221A2 Method and circuit layout for the transmission of messages
06/2000
06/27/2000CA2001349C Spectrum spread communication by csk modulation
06/20/2000US6078629 Digital synthesizer
06/13/2000US6075822 Traceback device of a trellis decoder
05/2000
05/30/2000US6069574 Hadamard code generation circuit
05/23/2000US6067313 Wireless communications system for transmitting and receiving data with increased data rates and robustness
05/16/2000US6064695 Spread spectrum communication system utilizing differential code shift keying
05/03/2000EP0997009A2 Data communication and radio system
04/2000
04/13/2000WO2000021260A1 Encoding/decoding additional symbols in a communications system
04/12/2000EP0992120A1 Wireless communications system for transmitting and receiving data with increased data rates and robustness
04/04/2000US6047035 Method and device for quantizing the input to soft decoders
03/2000
03/30/2000WO2000018075A1 Methods and circuits for generating a preemphasis waveform
03/28/2000US6043762 Hardware bit coder
03/01/2000EP0982866A1 Method for convolutional coding and transmission of a stream of packets of digital data, and a method and apparatus for corresponding decoding
02/2000
02/16/2000EP0980158A1 Method and interface for interconnection using high bit rate serial links
02/01/2000US6020716 Engine starting apparatus
12/1999
12/23/1999WO1999066658A1 Method and device for quantizing the input to soft decoders
12/23/1999WO1999053628A3 Data communication and radio system
12/14/1999US6002733 Universal asynchronous receiver and transmitter
11/1999
11/18/1999DE19920469A1 Hardware bit coder for data to be transmitted
11/16/1999US5987016 Method and apparatus for tracking a communication signal in a wireless communication system
10/1999
10/27/1999EP0952678A1 Digital modulation system using modified orthogonal codes to reduce autocorrelation sidelobes
10/21/1999WO1999053628A2 Data communication and radio system
10/13/1999EP0949765A2 Digital modulation system using extended code set
10/05/1999US5963609 Apparatus and method for serial data communication between plurality of chips in a chip set
09/1999
09/21/1999CA2180345C Method and device for transforming a series of data packets by means of data compression
09/07/1999US5949825 For reducing noise on a signal
09/07/1999CA2141901C Dynamic compression-rate selection arrangement
08/1999
08/24/1999US5943361 In a spread spectrum communication system
08/17/1999US5940459 Communication system
06/1999
06/09/1999CN1219058A Strong anti-jamming digit modulating and demodulating plan for radio communication with fade
05/1999
05/27/1999WO1999009656A3 Method and circuit layout for the transmission of messages by means of approximating hermitian functions
05/26/1999EP0918409A2 Robust digital modulation and demodulation scheme for radio communications involving fading
05/25/1999US5907692 Data pipeline system and data encoding method
05/25/1999US5907576 CSK communication system and method for spread spectrum communication
05/14/1999WO1999023770A1 Method and apparatus for tracking a communication signal in a wireless communication system
05/14/1999CA2308483A1 Method and apparatus for tracking a communication signal in a wireless communication system
05/12/1999EP0915582A1 Symbol coding device and method, symbol decoding device and method
04/1999
04/27/1999US5897615 Speech packet transmission system
04/21/1999EP0910174A2 Code shift keying (CSK) apparatus and method for spectrum spread communication
03/1999
03/31/1999CN1212594A Communication method, transmission and reception apparatuses, and cellular radio communication system
03/24/1999EP0903853A2 Bus noise reduction circuit using clamping
02/1999
02/25/1999WO1999009656A2 Method and circuit layout for the transmission of messages by means of approximating hermitian functions
02/24/1999EP0898400A2 Communication method, transmission and reception apparatuses, and cellular radio communication system
02/24/1999EP0659292B1 Digital communications system, a transmitting apparatus and a receiving apparatus for use in the system
02/18/1999DE19735097A1 Message transmission method
02/09/1999US5870429 Apparatus method, and software modem for utilizing envelope delay distortion characteristics to determine a symbol rate and a carrier frequency for data transfer
01/1999
01/12/1999US5859883 Subscriber unit for wireless digital subscriber communication system
12/1998
12/30/1998WO1998059428A1 Wireless communications system for transmitting and receiving data with increased data rates and robustness
12/02/1998CN1041026C Digital communciations system, transmitting apparatus and receiving apparatus for use in the system
11/1998
11/24/1998US5841806 Method and apparatus for the transmission of energy-scaled variable rate data
11/18/1998CN1199313A Communication method, transmitter and receiver
10/1998
10/21/1998CN1196841A Apparatus and method of determining symbol rate and carrier frequency
10/06/1998US5819048 Image data processing apparatus transmitting data in accordance with a reception rate
09/1998
09/16/1998EP0865181A2 Method of reducing cochannel interference
06/1998
06/30/1998US5774467 Method and device for transforming a series of data packets by means of data compression
02/1998
02/12/1998WO1997049212A3 Apparatus and method of determining symbol rate and a carrier frequency
02/03/1998US5715236 System and method for generating signal waveforms in a CDMA cellular telephone system
12/1997
12/24/1997WO1997049212A2 Apparatus and method of determining symbol rate and a carrier frequency
12/02/1997US5694430 Subscriber unit for wireless digital subscriber communication system
10/1997
10/07/1997US5675608 Synchronous transmitter and receiver of spread spectrum communication method
08/1997
08/19/1997US5659569 Data burst randomizer
07/1997
07/01/1997US5644602 Direct digital frequency synthesizer for use in a subscriber unit of a wireless digital communication system
05/1997
05/13/1997US5629955 Variable spectral response FIr filter and filtering method
05/07/1997CN1149370A Complexity determining apparatus
03/1997
03/12/1997EP0762664A2 Code shift keying communication system
02/1997
02/05/1997CN1142300A Method and device for transforming a series of data packets by means of data compression
02/04/1997US5600684 Automatic identification for digital conferencing
01/1997
01/14/1997CA2074595C Method and apparatus for using orthogonal coding in a communication system
11/1996
11/06/1996EP0740877A1 Method and device for transforming a series of data packets by means of data compression
07/1996
07/09/1996US5535239 Data burst randomizer
06/1996
06/12/1996EP0397686B1 Apparatus for efficiently packing data in a buffer
05/1996
05/29/1996EP0714172A2 Data compression
04/1996
04/23/1996US5511073 Method and apparatus for the formatting of data for transmission
04/09/1996US5506872 Dynamic compression-rate selection arrangement
04/02/1996US5504773 Method and apparatus for the formatting of data for transmission
02/1996
02/28/1996EP0698862A2 Transmission compatibility using custom compression method and hardware
01/1996
01/18/1996WO1996001535A1 Hierarchical ofdm
11/1995
11/22/1995CN1112378A Digital communications system, a transmitting apparatus and a receiving apparatus for use in the system
11/02/1995EP0680152A2 Dynamic compression-rate selection arrangement
10/1995
10/10/1995CA2032909C Csk communication system
07/1995
07/27/1995WO1995020285A1 Method and device for transforming a series of data packets by means of data compression
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