Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 1 - Arrangements for detecting or preventing errors in the information received
Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402)
06/1998
06/02/1998US5761204 Method and apparatus of providing time sensitive messages over a variable delay channel
05/1998
05/28/1998WO1998023073A1 Coded modulation for fading channels
05/28/1998WO1998023071A1 A programmable loop filter for carrier recovery in a radio receiver
05/28/1998WO1998023070A1 Passband dqpsk detector for a digital communications receiver
05/28/1998WO1998023069A1 An improved phase detector for carrier recovery in a dqpsk receiver
05/28/1998WO1998023042A1 Verification of pn synchronization in a spread-spectrum communications receiver
05/28/1998WO1998023036A1 A carrier-recovery loop with stored initialization in a radio receiver
05/27/1998EP0844765A2 Multicarrier receiver with an antenna array
05/27/1998EP0844764A2 Automatic frequency correction for a radio calling system
05/27/1998EP0844760A2 Radio broadcast system with automatic retransmission request
05/27/1998EP0844759A1 Artificial fading for frequency offset mitigation
05/27/1998EP0844758A2 Non-equalized digital receiver using block decoding with erasure and error correction
05/27/1998EP0843927A1 Method of bi-directional data transmission over a two-wire line
05/27/1998EP0843926A1 System for measuring jitter in a non-binary digital signal
05/27/1998EP0843925A1 Waveform monitoring and restitution method and device for implementing same
05/27/1998EP0714575A4 Method and apparatus for creating a composite waveform
05/27/1998CN1182985A Device utilizing whitebi decoder measuring error rate
05/26/1998US5758266 Multiple frequency communication device
05/26/1998US5757863 Apparatus for decoding a signal encoded by using trellis coded modulation
05/26/1998US5757861 Apparatus for correcting phase error of VSB signal
05/26/1998US5757856 Differential coder and decoder for pragmatic approach trellis-coded 8-PSK modulation
05/26/1998US5757850 Transmission bit rate discrimination method and apparatus
05/26/1998US5757825 Digital signal processing for controlling error correction based on the state of the control bit
05/26/1998US5757813 Method for achieving optimal channel coding in a communication system
05/26/1998US5757812 Error correction device for digital video apparatus using a one-bit eraser signal
05/26/1998US5757810 Transmission link supervision in radiocommunication systems
05/26/1998US5757790 Packet communication system capable of rapidly confirming receipt of downward packet signals
05/26/1998US5757789 Dual mode satellite/cellular terminal
05/26/1998US5757787 Dual mode satellite/cellular terminal
05/26/1998US5757782 Paging system with multiple baseband subcarriers
05/26/1998US5757769 Line switching control system in synchronous communication network system
05/26/1998US5757652 Electrical signal jitter and wander measurement system and method
05/26/1998US5757416 System and method for transmitting a plurality of digital services including imaging services
05/26/1998US5757367 Numbering scheme for dynamic error encoding and method therefore
05/22/1998WO1998021850A1 Method of communicating according to a trellis code chosen from a fixed set of baseband signal points
05/22/1998WO1998021849A1 Method for suppressing interference signals during transmission of digital signals
05/22/1998WO1998021848A1 Radio communication equipment using algorithm diversity
05/22/1998WO1998021846A1 Method and device for multiplexing a plurality of digital data flows into one global digital data flow, and method and device for demultiplexing one global digital data flow into a plurality a digital data flows
05/22/1998WO1998010552A3 Improvements in, or relating to, multi-carrier transmission systems
05/22/1998WO1998010549A3 Improvements in, or relating to, multi-carrier transmission systems
05/20/1998EP0843422A2 Method and arrangement for improving the transmission quality in a point-to-multipoint radio transmission system
05/20/1998EP0682790A4 Method and system for synchronizing encoders and decoders in communication networks when errors are detected.
05/20/1998EP0666001B1 Process and arrangement for antenna diversity selection in the receiving device of a cordless telephone system
05/20/1998CN1182523A Method and apparatus for power control in spread-spectrum communication system
05/20/1998CN1182509A Method and apparatus for estimating a channel parameter in digital radio frequency communication system
05/19/1998US5754754 Transmission order based selective repeat data transmission error recovery system and method
05/19/1998US5754734 Method of transmitting voice coding information using cyclic redundancy check bits
05/19/1998US5754605 Method and apparatus for synchronization of a communications unit
05/19/1998US5754600 Method and apparatus for optimum soft-decision viterbi decoding of convolutional-differential encoded QPSK data in coherent detection
05/19/1998US5754597 Method and apparatus for routing a digitized RF signal to a plurality of paths
05/19/1998US5754564 Method of continuous calculation of cyclic redundancy check
05/19/1998US5754553 Packet conversion apparatus and system
05/19/1998US5754541 Data transmission method, base station, and subscriber terminal
05/19/1998US5754531 Communication control method and communication apparatus
05/19/1998US5754527 Line switching apparatus
05/19/1998US5754437 Phase measurement apparatus and method
05/19/1998US5754310 Facsimile signal relay method and apparatus therefor
05/19/1998CA2100387C Error detection and correction device
05/14/1998WO1998020696A2 Method and apparatus for compressing and transmitting high speed data
05/14/1998WO1998020619A1 Apparatus and method for dynamically selecting a transmitter for directed message delivery
05/14/1998WO1998020617A1 Soft decision output decoder for decoding convolutionally encoded codewords
05/14/1998WO1998020511A1 Method for explicit data rate control in a packet communication environment without data rate supervision
05/14/1998DE19647314A1 Fault recognition method for digitally transmitted data
05/14/1998DE19646628A1 Bidirectional communication system with redundancy function
05/14/1998DE19646164A1 Verfahren zur Übertragung digitaler Signale Method for transmitting digital signals
05/13/1998EP0841777A2 System for preserving sequential ordering and supporting idempotent commands in a ring network with busy nodes
05/13/1998EP0840966A1 Decryption of retransmitted data in an encrypted communication system
05/13/1998CN1181851A Joint demodulation using spatial maximum likelihood
05/13/1998CN1181673A Timing synchronization in receiver employing orthogonal frequency division multiplexing
05/13/1998CN1181661A Interleave read address generator
05/12/1998US5752166 Method and apparatus for controlling how a receiver responds to a message
05/12/1998US5751935 Radio paging system
05/12/1998US5751773 System for wireless serial transmission of encoded information
05/12/1998US5751767 Channel quality monitoring by detecting, based on a fading pitch detected in an RSSI, a BER in an accumulated phase likelihood datum
05/12/1998US5751766 Non-invasive digital communications test system
05/12/1998US5751743 Information transmission method and apparatus
05/12/1998US5751740 Error detection and correction system for use with address translation memory controller
05/12/1998US5751739 Methods of and devices for enhancing communications that use spread spectrum technology
05/12/1998US5751731 Simplifying decoding of codewords in a wireless communication system
05/12/1998US5751730 Encoding/interleaving method and corresponding deinterleaving/decoding method
05/12/1998US5751725 Method and apparatus for determining the rate of received data in a variable rate communication system
05/12/1998US5751719 Method and system for data transfer in the presence of disconnects
05/12/1998US5751695 ATM cell flow control apparatus
05/12/1998US5751347 Vestigial sideband test signal generator and method
05/12/1998CA2017579C Communication circuit fault detector
05/07/1998WO1998019481A2 Method and apparatus for providing high speed data communications in a cellular environment
05/07/1998WO1998019432A1 Signal processing method and apparatus for reducing equalizer error
05/07/1998WO1998019431A1 Method and apparatus for decoding variable rate data
05/07/1998WO1998019414A1 A digital communications system having an automatically selectable transmission rate
05/07/1998WO1998019410A2 Single chip vlsi implementation of a digital receiver employing orthogonal frequency division multiplexing
05/07/1998WO1998019408A2 Single-chip dbs receiver
05/07/1998WO1998019405A1 Method and apparatus for performing data rate determination
05/07/1998WO1998019402A1 Diversity antenna selection
05/07/1998WO1998019401A1 Impairment determination for a diversity antenna selection process
05/07/1998WO1998010554A3 Improvements in, or relating to, multi-carrier transmission systems
05/07/1998WO1998010553A3 Improvements in, or relating to, control channels for telecommunications transmission systems
05/07/1998WO1998010551A3 Improvements in, or relating to, multi-carrier transmission systems
05/07/1998WO1998010547A3 Improvements in, or relating to, multi-carrier transmission systems
05/07/1998DE19747112A1 Main memory watchdog control system
05/07/1998CA2270149A1 Single chip vlsi implementation of a digital receiver employing orthogonal frequency division multiplexing
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