Patents
Patents for H04J 11 - Orthogonal multiplex systems (25,498)
07/1996
07/11/1996DE4444889C1 Verfahren und Schaltungsanordnung zur Realisierung eines Rückübertragungskanals vom Empfänger zum Sender in einem Gleichwellennetz Method and circuit for implementing a feedback channel from the receiver to the transmitter in a single frequency network
07/09/1996US5535240 Transceiver apparatus employing wideband FFT channelizer and inverse FFT combiner for multichannel communication network
07/09/1996US5535239 Data burst randomizer
07/04/1996WO1996020537A1 De-interleaving and buffering in one memory
06/1996
06/27/1996WO1996019883A1 A practical means for digital generation and combination of a multiplicity of cdma/fdma signals
06/27/1996WO1996019879A1 Method and apparatus for using walsh shift keying in a spread spectrum communication system
06/20/1996WO1996019056A1 Method at ofdm-reception for correction of frequency, time window, sampling clock and slow phase variations
06/20/1996WO1996019052A2 Circuit array and process for creating a data feedback channel from receiver to transmitter in a common frequency network
06/20/1996WO1996019050A1 Network entry channel for cdma systems
06/19/1996EP0521995B1 Transmission and reception in a hostile interference environment
06/19/1996CN1032099C System of communication
06/18/1996US5528581 Diversity transmission system for sub-band diversity reception
06/06/1996WO1996017446A1 Data transmission method, transmitter, and receiver
06/05/1996EP0714572A1 Communications system
06/04/1996US5524027 Data receiver, method of calculating metrics, and signal processing device
05/1996
05/30/1996WO1996016493A1 Process for digital frequency correction in multi-carrier transmission processes
05/30/1996DE4441566A1 Verfahren zur digitalen Frequenzkorrektur bei Mehrträgerübertragungsverfahren Method of digital frequency correction for multicarrier transmission method
05/29/1996EP0714189A2 Receiver for multicarrier signals
05/29/1996EP0713681A1 Method and device for multichannel digital reception and ultrasonic diagnostic device
05/28/1996US5521943 COFDM combined encoder modulation for digital broadcasting sound and video with PSK, PSK/AM, and QAM techniques
05/23/1996WO1996010305A3 Data transmission method in a tdma mobile communication system
05/21/1996US5519731 ADSL compatible discrete multi-tone apparatus for mitigation of T1 noise
05/15/1996DE19535327C1 Verfahren zur gemeinsamen Übertragung digital und analog modulierter Rundfunk- und/oder Fernsehrundfunksignalen Method for the shared transmission digital and analog modulated radio and / or television broadcasting signals
05/07/1996US5515396 Method and apparatus for selecting a spreading code in a spectrum spread communication system
05/01/1996EP0709980A1 Frequency synchronisation for OFDM system
04/1996
04/24/1996EP0707764A1 Ofdm teletext
04/23/1996US5511073 Method and apparatus for the formatting of data for transmission
04/17/1996EP0707387A2 Spread-response precoding system for wireless transmission
04/17/1996EP0707386A2 Multi-user communication system employing spread signatures
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
04/10/1996EP0706273A2 Method of and apparatus for demodulating a signal conveyed by multiple carriers
04/10/1996EP0705500A1 Method and apparatus for utilizing multiple spreading codes in a communication system
04/10/1996EP0705499A1 Device for amplifying television signals with a predetermined variable operating class for preventing transmission errors
04/09/1996US5506836 Orthogonal frequency division multiplex demodulation
04/04/1996WO1996010305A2 Data transmission method in a tdma mobile communication system
04/04/1996WO1996010299A1 Decoder for a non-coherently demodulated signal
04/03/1996EP0704122A1 Process and arrangement for adjusting the local oscillators of a receiver in a multi-channel transmission system
04/02/1996US5504775 Multi-user spread spectrum communication system
04/02/1996US5504773 Method and apparatus for the formatting of data for transmission
03/1996
03/20/1996EP0702476A2 Multilevel weighted transmission method and multilevel weighted transmission and reception apparatus
03/20/1996EP0702466A2 Reduction of peak to average power ratio for OFDM
03/14/1996WO1996002990A3 Method and device for synchronization of transmitter and receiver in a digital system
03/13/1996EP0701345A2 Multicarrier transmission using differential phases
03/13/1996EP0700612A1 Method and apparatus for time division multiplexing the use of spreading codes in a communication system
03/13/1996CN1118644A A digital communication system and a receiver for use in such a system
03/05/1996US5497395 Method and apparatus for modulating signal waveforms in a CDMA communication system
02/1996
02/29/1996WO1996006490A1 Multi-band, multi-mode spread-spectrum communication system
02/29/1996CA2197332A1 Multi-band, multi-mode spread-spectrum communication system
02/28/1996CN1117673A Code sequence generator
02/22/1996WO1996005668A1 Multiple access coding using bent sequences for mobile radio communications
02/22/1996CA2643172A1 Multiple access coding using bent sequences for mobile radio communications
02/22/1996CA2643142A1 Multiple access coding using bent sequences for mobile radio communications
02/21/1996EP0697153A1 Compensation for local oscillator errors in an ofdm receiver
02/14/1996EP0696398A1 A multiple access digital transmission system and a radio base station and a receiver for use in such a system
02/14/1996CN1116889A Time alignment in a CDMA system
02/07/1996EP0695484A1 Time alignment in a cdma system
02/01/1996WO1996002991A1 Frame synchronization in multicarrier transmission systems
02/01/1996WO1996002990A2 Method and device for synchronization of transmitter and receiver in a digital system
02/01/1996WO1996002989A1 Multiple carrier transmission in common wave broadcasting networks
02/01/1996CA2347268A1 Transmission system using multicarrier modulation
01/1996
01/30/1996US5488632 Transmission and reception in a hostile interference environment
01/30/1996US5488629 Signal processing circuit for spread spectrum communications
01/30/1996CA2154848A1 Multilevel weighted transmission method and multilevel weighted transmission and reception apparatus
01/25/1996WO1996002101A1 Method and system for simultaneously broadcasting and receiving digital and analog signals
01/09/1996US5483529 Data recovery device
12/1995
12/28/1995WO1995035601A1 Communications system
12/27/1995EP0689313A2 AFC for OFDM using windowing
12/27/1995EP0688483A1 A digital communication system and a receiver for use in such a system
12/21/1995WO1995034967A1 Ofdm signal organized so as to simplify reception
12/14/1995WO1995034149A1 Method and apparatus for coordinating multi-point-to-point communications in a multi-tone data transmission system
12/14/1995CA2440667A1 Method and apparatus for coordinating multi-point to point communications in a multi-tone data transmission system
12/14/1995CA2440662A1 Method and apparatus for coordinating multi-point to point communications in a multi-tone data transmission system
12/14/1995CA2440657A1 Method and apparatus for coordinating multi-point to point communications in a multi-tone data transmission system
11/1995
11/28/1995US5471497 Method and apparatus for variable rate signal transmission in a spread spectrum communication system using coset coding
11/28/1995US5471464 Orthogonal frequency division multiplex demodulation apparatus
11/23/1995WO1995031135A1 Method and device for multichannel digital reception and ultrasonic diagnostic device
11/22/1995EP0683576A1 An OFDM digital broadcasting system, and a transmission system and a receiving system used for digital broadcasting
11/15/1995EP0682423A2 Code division multiple access system providing variable data rate access to a user
11/07/1995US5465269 Method and apparatus for encoding and decoding a supplementary signal
11/02/1995EP0680172A2 Code sequence generator
10/1995
10/31/1995US5463657 Detection of a multi-sequence spread spectrum signal
10/26/1995WO1995028773A1 Improved adsl compatible discrete multi-tone apparatus
10/25/1995EP0679000A1 Soft quantisation
09/1995
09/28/1995WO1995024086A3 A multiple access digital transmission system and a radio base station and a receiver for use in such a system
09/20/1995EP0673131A2 Hierarchical OFDM system
09/20/1995EP0672320A1 Transmission using ofdm with polarization multiplexing
09/20/1995EP0672273A1 Method and apparatus for encryption having a feedback register with selectable taps
09/19/1995US5452322 Receiver for digital signals transmitted in the coded differential modulation mode
09/16/1995CA2144663A1 Hierarchcial quadrature frequency multiplex system, transmitting apparatus and receiving apparatus therefor
09/14/1995WO1995024781A1 Method and apparatus for am compatible digital broadcasting
09/14/1995WO1995024780A1 Digital broadcast systems for local transmissions
09/12/1995US5450453 Method, apparatus and system for decoding a non-coherently demodulated signal
09/08/1995WO1995024086A2 A multiple access digital transmission system and a radio base station and a receiver for use in such a system
09/06/1995EP0669958A1 Mixtures of polymers of monoethylenically unsaturated dicarboxylic acids and polymers of ethylenically unsaturated monocarboxylic acids and/or polyaminocarboxylic acids, and the use of such mixtures
08/1995
08/31/1995WO1995023464A1 Method and apparatus for time division multiplexing the use of spreading codes in a communication system
08/31/1995WO1995023459A1 Method and apparatus for utilizing multiple spreading codes in a communication system
08/31/1995CA2158356A1 Method and apparatus for utilizing multiple spreading codes in a communication system
08/31/1995CA2158269A1 Method and apparatus for time division multiplexing the use of spreading codes in a communication system
08/29/1995US5446727 Method and apparatus for time aligning signals for reception in a code-division multiple access communication system