Patents for H04L 27 - Modulated-carrier systems (89,721)
08/1999
08/04/1999EP0933902A2 Demodulation with fading compensation
08/04/1999EP0933896A2 Demodulation circuit including error correction
08/04/1999EP0932974A1 Circuitry and method for simultaneously transmitting voice and data information
08/04/1999EP0932961A1 Local communication system and apparatus for use therein
08/04/1999EP0701752B1 A method and apparatus for determining signal usability
08/04/1999EP0563252B1 Multi-modulation scheme compatible radio
08/04/1999CN1225211A Method and apparatus for implementing a wireine transmission connection
08/03/1999US5933768 Receiver apparatus, and associated method, for receiving a receive signal transmitted upon a channel susceptible to interference
08/03/1999US5933467 Device for receiving a source digital signal transmitted
08/03/1999US5933465 Control signal detection method with calibration error and subscriber unit therewith
08/03/1999US5933461 Data receiving apparatus, demodulator circuit and integrated circuit
08/03/1999US5933460 Phase detecting method and phase tracking loop circuit for a digital vestigial sideband modulation communication device
08/03/1999US5933455 Data slicer for demodulated binary FSK signals in a time division duplex radio environment
08/03/1999US5933454 Multi-carrier data transmissions system using an overhead bus for synchronizing multiple remote units
08/03/1999US5933452 Timing interpolator in digital demodulator
08/03/1999US5933448 Automatic tuning of a radio transceiver
08/03/1999US5933415 Circuit for transmitting binary data on the electric network using several transmission channels
08/03/1999US5933200 Method for reducing carrier recovery time in high definition television receiver
08/03/1999US5933059 Method and apparatus for controlling frequency synchronization in a radio telephone
08/03/1999US5933053 Burst demodulator
08/03/1999US5933039 Integrated circuit
08/03/1999US5931965 Method of forward error correction coding for a data signal
08/03/1999CA2145571C Recovering analog and digital signals from superimposed analog and digital signals using linear prediction
08/03/1999CA2140026C A method and apparatus for mitigating distortion effects in the determination of signal usability
08/03/1999CA2089154C Automatic frequency control by an adaptive filter
07/1999
07/29/1999WO1999038337A2 Method and system for generating a complex pseudonoise sequence for processing a code division multiple access signal
07/29/1999WO1999038301A1 Method for processing a signal consisting of data symbols
07/29/1999WO1999038300A2 Radio telephone for spread-spectrum system using nonlinear modulation
07/29/1999WO1999038298A1 Pulse shaping according to modulation scheme
07/29/1999WO1999038297A1 Pulse shaping which compensates for component distortion
07/29/1999WO1999038269A1 Circuit for demodulating two-dimensional data symbols transmitted by means of supported data transmission
07/28/1999EP0932290A1 Interface apparatus and method for a communications device
07/28/1999EP0932285A2 Reduction of instantaneous maximum power in multicarrier signals
07/28/1999EP0932284A2 Multicarrier transmission system, with modifiable bandwidth
07/28/1999EP0932283A1 BPSK demodulator for PCM signal
07/28/1999EP0932252A2 Tuning demodulator for digitally modulated RF signals
07/28/1999EP0931404A1 Receiver signal processing system for cap signals
07/28/1999EP0931388A2 Spatio-temporal processing for communication
07/28/1999EP0931382A1 Method and apparatus for decoding block codes
07/28/1999EP0792546B1 Distortion corrector for two data flows and corresponding method
07/28/1999CN1224291A Multiband detector
07/27/1999US5930518 Arithmetic unit
07/27/1999US5930310 Data signal demodulator
07/27/1999US5930306 Device for correcting phase noise in a digital receiver
07/27/1999US5930304 Wireless powered communication device with adaptive data detection and method
07/27/1999US5930303 Digital modulation employing single sideband with suppressed carrier
07/27/1999US5930301 Up-conversion mechanism employing side lobe-selective pre-distortion filter and frequency replica-selecting bandpass filter respectively installed upstream and downstream of digital-to-analog converter
07/27/1999US5930299 Digital modulator with compensation and method therefor
07/27/1999US5930292 Method and apparatus for improved autocorrelation in biphase modulated pseudorandom noise coded systems using tri-state demodulation
07/27/1999US5929703 Method and device for modeling AM-AM and AM-PM characteristics of an amplifier, and corresponding predistortion method
07/27/1999CA2149584C Digital vsb detector with final i-f carrier at submultiple of symbol rate, as for hdtv receiver
07/27/1999CA2101328C Gain control circuit for radio transmitter
07/27/1999CA2040558C Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in multicarrier modems
07/22/1999WO1999037068A1 Method and apparatus for tracking the characteristics of a channel
07/22/1999WO1999037051A2 Method and apparatus for synchronizing a data communication system to a periodic digital impairment
07/21/1999EP0930754A2 Blind automatic gain control
07/21/1999EP0930753A2 Method for calibrating a multicarrier transmitter and receiver
07/21/1999EP0930752A2 Method for allocating data and power in a discrete multitone communication system
07/21/1999EP0930751A1 Method and apparatus for receiving orthogonal frequency division multiplexed signal
07/21/1999EP0930750A1 Method of upstream channel modeling for PCM modem
07/21/1999EP0930745A1 Circuit and method of identifying a burst frequency
07/21/1999EP0930728A2 Digital optical transmission apparatus and method for performing ASK modulation to generate base band component with constant DC level
07/21/1999EP0929960A2 Method for eliminating interference in an ofdm radio receiver
07/21/1999EP0929959A1 Method for transmitting data packets on carrier frequency with linear variation and transmitter implementing this method
07/21/1999CN1223759A Device and method for radio transmitters
07/21/1999CN1223757A System for radio transmission of digital signals between a plurality of subscriber stations and a base station
07/21/1999CN1223514A Digital communication system
07/21/1999CN1223506A Nonlinearity-caused distortion compensating system
07/20/1999US5926768 Method of optimizing radio communication between a base and a mobile
07/20/1999US5926750 Receiver
07/20/1999US5926746 Frequency and other parameter adjustment using training channel
07/20/1999US5926508 Communication scheme using non-coherent frequency detection of trellis-based coding of plural transmission frequencies per baud
07/20/1999US5926507 Quotient coding modem
07/20/1999US5926065 Digital modulator having a digital filter including low-speed circuit components
07/20/1999US5925114 Modem implemented in software for operation on a general purpose computer having operating system with different execution priority levels
07/15/1999WO1999035756A1 ACTIVATION OF MULTIPLE xDSL MODEMS WITH CHANNEL PROBE
07/15/1999WO1999035746A1 Noise cancellation circuit and quadrature downconverter
07/15/1999WO1999035736A1 Quadrature modulator and demodulator
07/15/1999WO1999025075A3 A wireless communication device
07/15/1999WO1999023779A3 Composite trellis system and method
07/15/1999WO1999020016B1 Method and apparatus for maintaining a predefined transmission quality in a wireless man network
07/15/1999CA2316969A1 Quadrature modulator and demodulator
07/14/1999EP0929172A1 Multicarrier modulation system, with variable symbol rates
07/14/1999EP0929171A2 Data transmission over power lines, using continuous phase signals
07/14/1999EP0929165A1 Multi-carrier transmission method and data transmitter
07/14/1999EP0929149A1 Receiver for data transmission
07/14/1999EP0928540A4 Multiple modulation format television signal receie system
07/14/1999EP0928540A1 Multiple modulation format television signal receiver system
07/14/1999EP0928524A2 Pipeline communication system
07/14/1999EP0928515A1 Adaptive digital predistortion linearization and feed-forward correction of rf power amplifier
07/14/1999EP0928514A1 Receiver capable of demodulating multiple digital modulation formats
07/14/1999EP0745290A4 A high-data-rate wireless local-area network
07/14/1999CN1223045A Channel estimation arrangement
07/14/1999CN1223030A DC offset compensation method and apparatus
07/13/1999US5923760 Chaotic communication apparatus and method for use with a wired or wireless transmission link
07/13/1999US5923711 Data processor
07/13/1999US5923666 Decoding carriers encoded using orthogonal frequency division multiplexing
07/13/1999US5923651 Increasing data throughput in a wireless telecommunications environment
07/13/1999US5923454 Modem method and device for indicating received signal strength and presence for intensity modulated binary-coded wireless data packets with reduced recovery time
07/13/1999US5923223 Transmission system in which either an in-phase or quadrature component of a transmitted signal is delayed prior to modulation