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