Patents for H04L 27 - Modulated-carrier systems (89,721)
08/1999
08/31/1999US5946045 System for forming program guides and video data for storage and transmission in different coding formats
08/31/1999US5945885 Digital baseband modulator adaptable to different modulation types
08/31/1999US5945875 π/n shift phase-shift keying demodulator
08/31/1999US5944850 Digital transmission system and method comprising a punctured product code combined with a quadrature amplitude modulation
08/26/1999WO1999043132A2 A method and a circuit for am demodulation
08/26/1999WO1999043123A1 Improvements in, or relating to, vdsl
08/26/1999WO1999043090A1 Quadrature-free rf receiver for directly receiving angle modulated signal
08/26/1999WO1999043080A1 Direct digital synthesis of precise, stable angle modulated rf signal
08/26/1999WO1999042948A1 Data carrier for contactless reception of data and energy and method for operating the same
08/26/1999CA2320699A1 A method and a circuit for am demodulation
08/26/1999CA2260528A1 Channel tracking in a mobile receiver
08/25/1999EP0938216A2 Apparatus for receiving QAM or DPSK signals
08/25/1999EP0938203A1 Receiver and receiving circuit
08/25/1999EP0938193A1 Header structure for TDD systems
08/25/1999EP0937975A2 Microtome
08/25/1999EP0937366A2 Method of combining several signals, and base station
08/25/1999EP0937339A1 Calibration of n-port receiver
08/25/1999EP0937332A1 Frequency modulator
08/25/1999EP0697153B1 Compensation for local oscillator errors in an ofdm receiver
08/25/1999EP0676096A4 Demodulator logic unit adaptable to multiple data protocols.
08/25/1999EP0628229B1 Psk receiver
08/25/1999CN1227022A Method and apparatus for superframe bit allocation in discrete multitone system
08/25/1999CN1227017A Wireless receiver with offset compensation using flash-ADC
08/24/1999US5943380 Robust phase estimator and recoverer for digital signals affected in particular by phase jitter
08/24/1999US5943375 Method to indicate synchronization lock of a remote station with a base station
08/24/1999US5943372 Orthogonal polarization and time varying offsetting of signals for digital data transmission or reception
08/24/1999US5943370 Direct conversion receiver
08/24/1999US5943369 Timing recovery system for a digital signal processor
08/24/1999US5943361 In a spread spectrum communication system
08/24/1999US5943345 AM multiplexing broadcast apparatus
08/24/1999US5942955 Quasi-GMSK modulator
08/24/1999CA2171418C Orthogonal frequency division multiplexing transmission system and transmitter and receiver therefor
08/24/1999CA2117797C Method and apparatus for receiving electromagnetic radiation within a frequency band
08/19/1999WO1999041887A1 Multi-dimensional coding, and method and device for the code
08/19/1999WO1999041886A1 Method and radio station for data transmission
08/19/1999WO1999041871A1 Multiple access method and system
08/19/1999WO1999041865A1 Modulating method, modulating device, demodulating method, and demodulating device
08/19/1999WO1999041851A1 Radio receiver that digitizes a received signal at a plurality of digitization frequencies
08/19/1999WO1999041838A1 Oscillation circuit scheme, modulation scheme, demodulation scheme, and multilevel qam modulation/demodulation system
08/19/1999DE19805546A1 Verfahren und Funkstation zur Datenübertragung Procedures and radio station for data transmission
08/19/1999CA2321748A1 Multiple access method and system
08/18/1999EP0936784A2 Pulse shaping for the control of the amplitude variation of PSK signals
08/18/1999EP0936744A1 Carrier generating device for a digital demodulator of MPX signals
08/18/1999EP0935440A1 Method for wireless communication transfer with an implanted medical device
08/18/1999CN1226111A Testing system of voice-band data transmission interface on exchange
08/17/1999US5940744 Local frequency correction
08/17/1999US5940457 Millimeter-wave (MMW) synthesizer with FSK modulation transmitter
08/17/1999US5940453 For performance improvement of a digital wireless receiver
08/17/1999US5940451 Automatic gain control in quadrature phase shift keying demodulator
08/17/1999US5940450 Carrier recovery method and apparatus
08/17/1999US5940447 Wireless powered communication device using power signal sampling and method
08/17/1999US5940446 Maximum likelihood detection of MPSK bursts with inserted reference symbols
08/17/1999US5940440 Generalized multimodulus technique for blind equalization
08/17/1999US5940438 For use in the modulation and demodulation of a signal
08/17/1999US5940436 Circuit for allocating a transmission channel on the electric network
08/17/1999US5940434 Walsh-QPSK chip modulation apparatus for generating signal waveform in a direct sequence spread spectrum communication system
08/17/1999US5940406 Method of digital frequency correction in multicarrier transmission processes
08/17/1999US5940365 AM data multiplexing modulation apparatus
08/17/1999US5938787 Communications systems and methods employing code rate partitioning with nonorthogonal modulation
08/17/1999CA2125260C Automatic frequency control apparatus and method therefor
08/17/1999CA2124622C Digital communications system with symbol multiplexers
08/17/1999CA2044252C Digital demodulator
08/12/1999WO1999040705A1 Method for transmitting digitally coded radio signals
08/12/1999WO1999040704A1 Radio frequency identification interrogator signal processing system for reading moving transponders
08/12/1999WO1999040698A1 Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system
08/12/1999WO1999040685A2 Method for processing telephone signals delivered by an analog telephone terminal
08/12/1999WO1999040648A1 Downlink broadcasting by sequential transmissions from a communication station having an antenna array
08/12/1999WO1999029078A3 Improvements in, or relating to, data scramblers
08/12/1999WO1999027689A3 Demodulation unit and method of demodulating a quadrature signal
08/11/1999EP0935339A1 Versatile signal generator
08/11/1999EP0934676A1 Cable network using atm cells for prioritized packet transmission
08/11/1999EP0934652A2 Reception of modulated carriers having asymmetrical sidebands
08/11/1999EP0934642A1 Simultaneous decoding and phase synchronisation using the criterion of maximum likelihood
08/11/1999EP0934638A2 Method and apparatus for superframe bit allocation in a discrete multitone (dmt) system
08/11/1999EP0688487A4 Method and apparatus for encoding/decoding broadcast or recorded segments and monitoring audience exposure thereto
08/10/1999US5937016 Synchronization method in Viterbi decoder
08/10/1999US5937015 Interference mitigation by joint decoding of overlapped signals
08/10/1999US5937013 Subharmonic quadrature sampling receiver and design
08/10/1999US5937010 Sample interpolator and method of generating additional samples of a sampled waveform using a programmable sample divider
08/10/1999US5937009 Sub-band echo canceller using optimum wavelet packets and cross-band cancellation
08/10/1999US5937008 Method and system for controlling the minimal distance between successive errors in digital radio transmission
08/10/1999US5936997 Spread spectrum communication method
08/10/1999US5936961 Signalling packet for communication system with reference modulated in accordance with a time-dependent law
08/10/1999US5936546 Variable format radio pager having power saving mode during binary code transmission
08/10/1999US5936472 Oscillating circuit with limitation function of oscillation frequency
08/10/1999US5936462 AM demodulator using limiter amplifier RSSI output as baseband signal
08/10/1999CA2121661C Apparatus and method for converting soft symbols into soft bits
08/10/1999CA2102108C Phase compensation method and apparatus
08/10/1999CA2086279C A differential detection demodulator
08/05/1999WO1999039486A1 Digital demodulator
08/05/1999WO1999039485A1 Receiver
08/05/1999WO1999039484A2 Transmission method and radio system
08/05/1999WO1999039473A1 Frequency hopping adaptation
08/05/1999WO1999039471A1 Digital data receiver
08/05/1999WO1999039464A2 A system and a method for information security in optical communication networks
08/05/1999WO1999039444A1 METHOD AND APPARATUS FOR PERFORMING TARGETED INTERFERENCE SUPPRESSION _____________________________________________________________è
08/05/1999WO1999020027A3 Splitterless multicarrier modem
08/05/1999DE19804025A1 Data exchange method for water industry
08/04/1999EP0933904A2 Data transmission using a combination of modulation types
08/04/1999EP0933903A2 Suppression of phase noise in multicarrier reception