Patents for H04L 27 - Modulated-carrier systems (89,721)
12/2002
12/05/2002US20020181626 Doppler corrected communications receiver and method of removing doppler frequency shift
12/05/2002US20020181625 Reduced complexity intercarrier interference cancellation
12/05/2002US20020181620 Device and method for the digital demodulation of a signal received by selecting a filter and digital communication receiver comprising same
12/05/2002US20020181619 Quadrature alignment in communications receivers
12/05/2002US20020181617 Apparatus and method for measuring sub-carrier frequencies and sub-carrier frequency offsets
12/05/2002US20020181615 Frequency estimator for use in a receiver of packetised data, the receiver and a method of reception
12/05/2002US20020181611 Analog quadrature modulator (AQM) error compensating apparatus and method
12/05/2002US20020181610 Multicarrier transmission apparatus and multicarrier transmission method
12/05/2002US20020181609 Seamless rate adaptive multicarrier modulation system and protocols
12/05/2002US20020181607 Transmitter and method to cancel interference in OFDM communication
12/05/2002US20020181605 Combining frequency multiplication and modulation
12/05/2002US20020181604 Layered modulation for digital signals
12/05/2002US20020181570 Digital modulator
12/05/2002US20020181569 DSL modem utilizing low density parity check codes
12/05/2002US20020181566 Fiberoptic transceiver system
12/05/2002US20020181562 Equalisation method and device of the GMMSE type
12/05/2002US20020181561 Spread spectrum receiving apparatus
12/05/2002US20020181553 Doppler spread/velocity estimation in mobile wireless communication devices and methods therefor
12/05/2002US20020181549 Multicarrier receiver with channel estimator
12/05/2002US20020181547 FMOD transceivers including continuous and burst operated TDMA, FDMA, spread spectrum CDMA, WCDMA and CSMA
12/05/2002US20020181509 Time and frequency synchronization in multi-input, multi-output (MIMO) systems
12/05/2002US20020181489 Multicarrier cdma communication device
12/05/2002US20020181459 Wireless communication apparatus
12/05/2002US20020181458 Data partitioning for multi-link transmission
12/05/2002US20020181404 Methods and systems for high speed broadband digital link
12/05/2002US20020181391 Systems and methods for selecting a cell in a communications network
12/05/2002US20020181390 Estimating channel parameters in multi-input, multi-output (MIMO) systems
12/05/2002US20020181389 Channel estimation for wireless OFDM systems
12/05/2002US20020181388 Communication system using orthogonal wavelet division multiplexing (OWDM) and OWDM-spread spectrum (OWSS) signaling
12/05/2002US20020181052 System and method for optical communication
12/05/2002US20020181050 Bi-directional communication system
12/05/2002US20020180523 Distortion canceling circuit
12/04/2002EP1263181A1 Sampling correction for a digital demodulation system and method using polyphase filter selection
12/04/2002EP1263179A1 Channel estimation for a CDMA system using coded control symbols as additional pilot symbols
12/04/2002EP1263162A1 Device and method for the digital demodulation of a signal received by selecting a filter and digital communication receiver comprising same
12/04/2002EP1263144A1 Delta sigma type AD converter
12/04/2002EP1262049A1 COMBINED TRANSMIT FILTER AND D-to-A CONVERTER
12/04/2002EP1262027A1 Method of differential coding and modulation
12/04/2002EP1262026A2 Forward error correction with channel adaptation
12/04/2002EP1262018A2 High-efficiency power modulators
12/04/2002EP1221794A9 Method and arrangement to determine a clock timing error in a multi-carrier transmission system
12/04/2002EP0996929B1 Method and system for voice transmission of a binary data sequence from a piezoelectric transducer
12/04/2002CN1383661A 自适应调制通信系统 An adaptive modulation communication system
12/04/2002CN1383306A Method and appts. for reinforcing operation of cable modem
12/04/2002CN1383305A Digital constant-ampletude modulator based on frequency modualtion mode
12/04/2002CN1383304A Method and device for detecting phase
12/04/2002CN1383303A Digital residual sideband transmission system
12/03/2002US6490628 Modem using a digital signal processor and a signal based command set
12/03/2002US6490569 System for combining life cycle assessment with activity based costing using a relational database software application
12/03/2002US6490326 Method and apparatus to correct for in-phase and quadrature-phase gain imbalance in communication circuitry
12/03/2002US6490318 Phase-compensating constant modulus algorithm
12/03/2002US6490270 Modulation method for transmitter
12/03/2002US6490269 OFDM signal generation method and OFDM signal generation apparatus
12/03/2002US6490056 Communication speed switching device
12/03/2002US6490010 AFC circuit, carrier recovery circuit and receiver device capable of regenerating a carrier reliably even at the time of low C/N ratio
12/03/2002US6489908 Wireless local loop terminal and system having high speed, high resolution, digital-to-analog converter with off-line sigma-delta conversion and storage
11/2002
11/28/2002WO2002096053A1 Narrow band chaotic frequency shift keying
11/28/2002WO2002096052A1 Narrow band chaotic bi-phase shift keying
11/28/2002WO2002096051A1 Recognition of modulation type by means of a marked phase rotation factor of a training sequence
11/28/2002WO2002095994A1 Signal generator with display unit
11/28/2002WO2002095993A1 Signal generator with frequency offset unit in the base band
11/28/2002WO2002095978A1 Communication optimisation method for a multi-user ofdm digital transmission system using the electrical network
11/28/2002WO2002095977A1 Synchronisation method for the uplink channel in a point-to-multipoint communication with ofdm modulation
11/28/2002WO2002095976A1 Downlink synchronisation method for a point-to-multipoint system with ofdm modulation
11/28/2002WO2002095974A1 Method and apparatus for peak-to-average power reduction
11/28/2002WO2002095973A1 Systems and methods for selecting a cell in a communications network
11/28/2002WO2002095965A1 Dsl modem utilizing low density parity check codes
11/28/2002WO2002095962A2 Quadrature envelope-sampling of intermediate frequency signal in receiver
11/28/2002WO2002095569A1 A method of, and apparatus for, rotating a 2d vector
11/28/2002WO2002095437A2 Efficient use of detectors with long dead times
11/28/2002WO2002080427A9 System and method for optical communication
11/28/2002WO2002069594A3 Frequency searcher and frequency-locked data demodulator using a programmable rotator
11/28/2002WO2002067527A3 Multicarrier equalisation using multiplication by a leakage matrix
11/28/2002WO2002025885A3 Overhead transmission for adsl modems
11/28/2002WO2002023746A3 Method for system-independent digital evaluation of mobile communication reception signals of various mobile radio standards
11/28/2002US20020177914 Audio distribution and production system
11/28/2002US20020177422 Subsampling communication receiver architecture with relaxed IFA readout timing
11/28/2002US20020177421 Subsampling communication receiver architecture with gain control and RSSI generation
11/28/2002US20020177406 Combined tire pressure monitoring and keyless entry receiver
11/28/2002US20020176569 Hybrid circuit for a broadband modem
11/28/2002US20020176544 Method and apparatus for monitoring channel frequency response
11/28/2002US20020176522 Quadrature envelope-sampling of intermediate frequency signal in receiver
11/28/2002US20020176520 Phase-locked loop initialization via curve-fitting
11/28/2002US20020176519 Coarse frequency offset estimation
11/28/2002US20020176517 Receiving device for angle-modulated signals
11/28/2002US20020176516 Method of estimating a signal-to-interferenceratio (SINR) using data samples
11/28/2002US20020176515 Method of frequency multiplication in a radiocommunications apparatus
11/28/2002US20020176514 High quality power ramping in a communications transmitter
11/28/2002US20020176510 Multi - tone signal transmission methods and apparatus
11/28/2002US20020176509 Discrete multitone modulation with reduced peak-to-average ratio using unloaded subchannels
11/28/2002US20020176483 OFDM pilot tone tracking for wireless LAN
11/28/2002US20020176480 Method and apparatus for peak-to-average power reduction
11/28/2002US20020176354 Timing misalignment estimation
11/28/2002US20020175878 Tunable matching circuit
11/28/2002US20020175863 Ferroelectric antenna and method for tuning same
11/28/2002US20020175847 Delta sigma type AD converter
11/28/2002US20020175837 Symmetric line coding
11/28/2002DE10122698A1 Process for the determination process for sub carriers used in an OFDM process
11/28/2002DE10122223A1 Vorrichtung und Verfahren zum Bestimmen einer Modulationsart Apparatus and method for determining a modulation type
11/28/2002CA2448453A1 Communication optimisation method for a multi-user ofdm digital transmission system using the electrical network