Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 27 - Modulated-carrier systems
Patents for H04L 27 - Modulated-carrier systems (89,721)
12/2003
12/09/2003US6661850 Testing system of voice-band data transmission interface on an exchange
12/09/2003US6661849 Multiple payload slicer system with prenormalization integer values
12/09/2003US6661834 Carrier recovery for spread spectrum communications
12/09/2003US6661781 Multicarrier demux/demod (MCDD) wireless network architecture
12/09/2003US6661771 Method and apparatus for interleaver synchronization in an orthogonal frequency division multiplexing (OFDM) communication system
12/09/2003US6661282 Demodulation apparatus and method in a communication system employing 16-ary QAM
12/09/2003CA2284948C Complex phase-locked loop demodulator for low-if and zero-if radio receivers
12/09/2003CA2263060C System and method for measuring channel quality information in a communication system
12/04/2003WO2003101133A1 Circuit arrangement for switching a mobile radio transmitter between two modulation modes
12/04/2003WO2003101067A1 Segment-wise channel equalization based data estimation
12/04/2003WO2003101066A1 Method and device for synchronization upon reception of a signal and echoes
12/04/2003WO2003101065A1 Method and device for estimating the transfer function of a channel for the variable transmission of a multicarrier signal
12/04/2003WO2003101064A1 Method and device for estimating and compensating iq imbalance
12/04/2003WO2003101062A1 Method and apparatus for a multiple modulation transmitter
12/04/2003WO2003101061A1 Quadrature modulator carrier quadrature error detection method and quadrature modulation device
12/04/2003WO2003101034A1 Communication system, receiver apparatus and communicating method
12/04/2003WO2003101015A1 Determination of the time delay and/or power of a multicarrier signal
12/04/2003WO2003100986A2 Data detection method for mimo-ofdm communication systems
12/04/2003WO2003100978A1 Phase-locked loop circuit
12/04/2003WO2003100719A1 Passive data carrier with signal evaluation means for evaluating information of a self-clocking signal
12/04/2003WO2003067793A3 Clock control and sampling rate conversion in the transmitter of a digital transceiver
12/04/2003WO2003061178A3 Electronic transmitter/receiver comprising a bit deleting device and an interleaver
12/04/2003WO2002096053A9 Narrow band chaotic frequency shift keying
12/04/2003US20030225958 Method and system for copying DMA with separate strides by a modulo-n counter
12/04/2003US20030225808 Method and system for implementing SLICE instructions
12/04/2003US20030225807 Method and system for implementing a conditional one's complement of partial address
12/04/2003US20030224815 Method and apparatus for wideband conferencing
12/04/2003US20030224780 System and method for dynamically establishing optimum audio quality in an audio conference
12/04/2003US20030224750 Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration
12/04/2003US20030224749 Semiconductor integrated circuit device for communication
12/04/2003US20030224744 Automatic frequency correction method and receiver for time division duplex modes of 3G wireless communications
12/04/2003US20030224743 Apparatus for radio telecommunication system and method of building up output power
12/04/2003US20030224740 Transmitter and semiconductor integrated circuit for communication
12/04/2003US20030224731 Radio communication method, radio communication system, radio communication base station, radio communication terminal station, and radio communication program
12/04/2003US20030224725 Digital television receiver converting vestigial-sideband signals to double-sideband AM signals before demodulation
12/04/2003US20030223524 Residual phase error correction
12/04/2003US20030223521 Method and apparatus for adjusting symbol timing and/or symbol positioning of a receive burst of data within a radio receiver
12/04/2003US20030223518 Adaptive RFI canceller for DSL
12/04/2003US20030223513 System and method for obtaining accurate symbol rate and carrier phase, frequency, and timing acquisition for minimum shift keyed waveform
12/04/2003US20030223511 Data dithering apparatus and method
12/04/2003US20030223507 Coded digital modulation method for communication system
12/04/2003US20030223489 Receiver with a decision feedback equalizer and a linear equalizer
12/04/2003US20030223485 ADSL modem apparatus, ADSL communication apparatus, and synchronization adjustment method for ADSL communication
12/04/2003US20030223484 DSL Modem apparatus and initialization method for DSL communication
12/04/2003US20030223483 DSL modem apparatus and reception method for DSL communication
12/04/2003US20030223480 Calibration of I-Q balance in transceivers
12/04/2003US20030223479 Phase error correction using despread signals
12/04/2003US20030223461 Computer implemented communication apparatus and method
12/04/2003US20030223459 DSL modem apparatus and communication control method for DSL communication
12/04/2003US20030223446 System for encapsulating ethernet frames over very high speed digital subscriber lines
12/04/2003US20030223434 Burst mode receiver and method for stable reception of packet data on telephone line
12/04/2003US20030223407 Computer implemented voice over data communication apparatus and method
12/04/2003US20030223354 SINR measurement method for OFDM communications systems
12/04/2003US20030223353 Method and apparatus for decoding baseband orthogonal frequency division multiplex signals
12/04/2003CA2486723A1 Segment-wise channel equalization based data estimation
12/03/2003EP1367842A1 Circuit for switching a mobile radio transmitter between two modulation operation modes
12/03/2003EP1367809A1 DSL initialisation using the interleave memory
12/03/2003EP1367795A1 Signal processing apparatus and signal processing method
12/03/2003EP1367794A2 Modulation method and radio communication system
12/03/2003EP1367793A1 Symbol synchronisation in ADSL by detecting FEXT/NEXT boundaries during C-PILOT
12/03/2003EP1367792A2 DSL modem apparatus and reception method for DSL communication
12/03/2003EP1367791A2 Gain control for a multicarrier modem
12/03/2003EP1367790A1 OFDM adaptive equalizer
12/03/2003EP1367789A1 TRANSMISSION APPARATUS, RECEPTION APPARATUS, TRANSMISSION METHOD, AND RECEPTION METHOD
12/03/2003EP1367788A1 Channel equaliser of OFDM receiver capable of adaptively equalizing OFDM signal according to state of channel
12/03/2003EP1367752A1 Mobile communication system, multicarrier cdma transmitter, and multicarrier cdma receiver
12/03/2003EP1367739A1 Transmit power control method in a multi-carrier radio system
12/03/2003EP1367735A1 Direct conversion receiver
12/03/2003EP1366610A1 Blind detection for mobile radio receivers
12/03/2003EP1366591A2 Method of symbol timing synchronization in communication systems
12/03/2003EP1366575A1 System for code division multi-access communication
12/03/2003EP0840972B1 Device and method for multiple channel communication with reduced peak-to-mean envelope power ratio
12/03/2003CN1460348A Method for frequency acquisition, especially for initial frequency acquisition, of mobile communications device
12/03/2003CN1460341A Timing recvery circuit in QAM demodulator
12/03/2003CN1459963A Input circuit for high-frequency transmission element
12/03/2003CN1459962A Fast time delay optimization method of time domain equalizing training in discrete multisound system
12/03/2003CN1459938A Orthogonal frequency dividing multipex receiver and method for treating orthogonal frequency dividing multiplex signal
12/03/2003CN1459937A Orthogonal frequency dividing multiplexing transmitter and method for treating orthogonal frequency dividing multiplexing signal
12/03/2003CN1130092C Telephone with modulator circuit of improved local oscillator
12/03/2003CN1130091C Communication device capable of effectively controlling power supply and method of controlling power supply
12/03/2003CN1130029C Method for transmitting signals in communication device
12/03/2003CN1130009C Transmitter using predistortion and method of transmitting
12/02/2003US6658244 Method and circuit for compensation control of offset voltages in a radio receiving circuit integrated in a circuit module
12/02/2003US6658241 Radio receiver automatic frequency control techniques
12/02/2003US6658075 Synchronization lock detector and method
12/02/2003US6658071 Delayed decision feedback log-map equalizer
12/02/2003US6658068 Detection of EFM stream component widths
12/02/2003US6658067 Data transmission method and radio system
12/02/2003US6658063 OFDM packet communication receiver system
12/02/2003US6658024 Data transmission device and data transmission method capable of minimizing delay of fast data both in normal conditions and noisy conditions
12/02/2003US6657950 Optimal filtering and upconversion in OFDM systems
12/02/2003US6657949 Efficient request access for OFDM systems
12/02/2003US6657510 Corrective phase quadrature modulator system and method
12/02/2003CA2314555C Signal notching system for limiting signal peaks
12/02/2003CA2310368C Sample timing control for demodulation of phase-modulated signals
11/2003
11/27/2003WO2003098916A2 High-resolution image projection
11/27/2003WO2003098892A1 Modified psk constellation to facilitate carrier recovery
11/27/2003WO2003098891A2 Adsl system with improved data base
11/27/2003WO2003098862A1 Method and arrangement for adjusting transmission power in a digital subscriber line
11/27/2003WO2003098838A1 Diversity receiver and receiving method
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