Patents for H04L 27 - Modulated-carrier systems (89,721)
05/1996
05/30/1996WO1996016492A1 System and method for wireless transmission of digital data using differentially encoded pilot words
05/30/1996DE4441566A1 Verfahren zur digitalen Frequenzkorrektur bei Mehrträgerübertragungsverfahren Method of digital frequency correction for multicarrier transmission method
05/30/1996DE4441323A1 Signals transmission method e.g. for mobile radio network orthogonal FDM signals
05/30/1996CA2203902A1 System and method for wireless transmission of digital data using differentially encoded pilot words
05/29/1996EP0714189A2 Receiver for multicarrier signals
05/29/1996CN1123586A A demodulator for frequency shift keyed signals
05/28/1996US5521949 Synchronization scheme for digital communications systems transporting data at a customer-controlled rate
05/28/1996US5521947 Phase detection reset in phase locked loops used for direct VCO modulation
05/28/1996US5521944 Circuit for a demodulator for a radio data signal in a radio receiver
05/28/1996US5521943 COFDM combined encoder modulation for digital broadcasting sound and video with PSK, PSK/AM, and QAM techniques
05/28/1996US5521942 Method for increasing the dynamic range of a signal in a simultaneous voice and data system by the use of overlapping signal point regions and trellis coding
05/28/1996US5521939 Timing reproduction device
05/28/1996US5521937 Multicarrier direct sequence spread system and method
05/28/1996US5521908 In a data transmission system
05/28/1996US5521906 Method and apparatus for updating carrier channel allocations
05/28/1996US5521559 Signal oscillator, FM modulation circuit using the same, and FM modulation method
05/28/1996US5521548 Phase detector
05/23/1996WO1996015612A1 Computer-based multifunction personal communication system with caller id
05/23/1996DE4394943C1 Channel quality estimation method over interval length in receiver
05/22/1996EP0713337A2 Apparatus for demodulating and decoding satellite, terrestrial and cable transmitted digital television data
05/22/1996EP0713306A1 VCO-based frequency modulation system and method
05/22/1996EP0713299A2 Method and apparatus for transmitting an intermittent signal in a radio communication
05/22/1996EP0713298A2 Transmitter and two-way radio set
05/22/1996EP0712555A1 Method and apparatus for synchronization in digital transmission systems of the ofdm type
05/22/1996CN2227892Y Automatic anwsering function expander for modem
05/22/1996CN1123073A Method and apparatus for providing a communication link quality indication
05/22/1996CN1122980A Precise detection of frequency error for bursts modulated by predetermind symbol sequence
05/22/1996CN1122972A Method for processing digital and analog input singals
05/21/1996US5519879 Integrated circuit having CPU and DSP for executing vector lattice propagation instruction and updating values of vector Z in a single instruction cycle
05/21/1996US5519733 Method and apparatus for recovering a qam carrier
05/21/1996US5519731 ADSL compatible discrete multi-tone apparatus for mitigation of T1 noise
05/21/1996US5519730 Communication signal having a time domain pilot component
05/21/1996US5519692 Geometric harmonic modulation (GHM)-digital implementation
05/21/1996US5519625 System for characterizing phase-modulated signals using a time interval analyzer
05/21/1996US5519402 Doppler shift compensation apparatus
05/21/1996US5519356 Methods and apparatuses for fast decision directed carrier recovery with wide locking range
05/21/1996CA2054247C Demodulation circuit for phase modulated signals
05/17/1996WO1996014700A2 Agc circuit for a digital receiver
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
05/15/1996CN1122549A Apparatus for processing BPSK signals transmitted with NTSC TV on quadrature-phase video carrier
05/15/1996CA2158773A1 Method and circuit for regulating the power of and linearizing a transmission signal of a radio device
05/14/1996US5517530 Method and apparatus for dual demodulation of mobile channel signals
05/14/1996US5517528 Modulation method and apparatus for digital communications
05/14/1996US5517433 Parallel digital data communications
05/09/1996WO1996013918A1 Reducing peak-to-average variance of a composite transmitted signal generated by a digital combiner via carrier phase offset
05/09/1996WO1996013917A1 Adaptive video signal distribution system
05/09/1996WO1996013906A1 Method and system for data communication, using a m-ary modulation scheme and inleaving means
05/08/1996EP0711056A2 Transmission bit rate discrimination method and apparatus
05/08/1996EP0710908A2 A co-processor that performs multiple communication tasks on an integrated circuit
05/08/1996EP0710907A2 Integrated circuit to perform multiple communication tasks
05/08/1996CN1122075A Recovering analog and digital signals from superimiposed analog and digital signals using linear prediction
05/07/1996US5515400 Method for arranging signal points in a quadrature amplitude modulation/demodulation system
05/07/1996US5515364 Radio frequency telecommunications transceiver
05/07/1996US5515197 Coherent optical multichannel receiver
05/07/1996US5515013 Fixed compromise equalization for a dual port FM modulator
05/07/1996US5514998 Method and system for demodulating GMSK signals in a cellular digital packet data system
05/02/1996WO1996013111A1 A qam constellation which is robust in the presence of phase noise; encoder and decoder for this constellation
05/02/1996WO1996013110A1 64 qam signal constellation which is robust in the presence of phase noise and has low decoding complexity
05/02/1996DE19540652A1 Digitales Kommunikationsverfahren aufgrund weicher Entscheidungen und Apparat A digital communication method due to soft decisions and apparatus
05/01/1996EP0710022A2 System and method for encoding digital information in a television signal
05/01/1996EP0709993A2 Phase demodulation method by measuring the time between zero-crossings
05/01/1996EP0709992A2 Costas loop and data identification apparatus
05/01/1996EP0709991A2 Apparatus and method for adjusting microwave BPSK modulator and mixer
05/01/1996EP0709990A2 Method and apparatus for digital carrier detection in a wireless lan
05/01/1996EP0709980A1 Frequency synchronisation for OFDM system
05/01/1996EP0709975A2 Method and apparatus for burst detecting
05/01/1996EP0709008A1 A method for demodulating a digitally modulated signal and a demodulator
05/01/1996EP0709007A1 Method for determining a phase error in a radio-frequency signal, and a receiver
05/01/1996EP0709003A1 Adaptive coherent signal detection method and apparatus
05/01/1996EP0709001A1 Modulator having direct digital synthesis for broadband rf transmission
04/1996
04/30/1996US5513220 Digital receiver with minimum cost index register
04/30/1996US5513219 Apparatus and method for transmitting information with a subminimally modulated transmission signal
04/30/1996US5513213 For use in a modem
04/30/1996US5512865 Digital oversampled quadrature modulator
04/30/1996US5512321 Process for coating elongated materials with multiple layers
04/30/1996CA2037535C Demodulating system capable of accurately equalizing received signals using error correction codes
04/25/1996WO1996012367A1 Carrier tracking loop for qpsk demodulator
04/25/1996WO1996012366A1 Locally coherent qpsk detection with differential decoding for a fading channel
04/25/1996WO1996012365A1 Carrier acquisition technique for mobile radio qpsk demodulator
04/25/1996WO1996012361A1 Symbol synchronizer using modified early/punctual/late gate technique
04/25/1996WO1996012358A1 Multiprotocol infra-red communication
04/25/1996WO1996002995A3 Data transmission by frequency shift
04/25/1996DE19535075A1 Quadrature amplitude modulation transmission system
04/25/1996DE19535030A1 Quadrature amplitude modulation transmission system
04/24/1996EP0708546A2 QAM communication method
04/24/1996EP0708545A2 Narrowband QAM transmission
04/24/1996EP0707767A1 Systems with increased information rates using embedded sample modulation and predistortion equalization
04/24/1996EP0707766A1 Start-stop receiver
04/24/1996EP0707764A1 Ofdm teletext
04/24/1996EP0627141A4 High speed modem systems incorporating distribution preserving tomlinson encoding and decoding for secondary channels.
04/24/1996CN1121383A Balanced modulator-transmitter
04/24/1996CN1121284A Digital radio transmission-reception apparatus
04/23/1996US5511236 Half duplex RF transceiver
04/23/1996US5511219 Mechanism for implementing vector address pointer registers in system having parallel, on-chip DSP module and CPU core
04/23/1996US5511099 Passband sync block recovery
04/23/1996US5511097 Delay detection circuit
04/23/1996US5511096 Quadrature amplitude modulated data for standard bandwidth television channel
04/23/1996US5511092 Data recovery technique which avoids a false convergence state
04/23/1996US5511091 Clock synchronization control check system
04/23/1996CA2007325C Method of rapidly controlling the frequency of a coherent radio receiver and apparatus for carrying out the method