Patents for H04L 27 - Modulated-carrier systems (89,721)
03/2004
03/17/2004EP1398898A1 Activation of multiple xDSL modems with implicit channel probe
03/17/2004EP1398885A1 Communication optimisation method for a multi-user ofdm digital transmission system using the electrical network
03/17/2004EP1398882A2 Multi-carrier reception for ultra-wideband (UWB) systems
03/17/2004EP1397897A1 Doppler spread/velocity estimation in mobile wireless communication devices and methods therefor
03/17/2004EP1397882A1 Cooperative code-enhanced multi-user communications system
03/17/2004EP1397881A1 Method and device for transferring data according to an arq-method
03/17/2004EP0941582B1 Method for correcting errors from a jamming signal in a frequency hopped spread spectrum communication system
03/17/2004EP0928524B1 Pipeline communication system
03/17/2004EP0804833B1 Frequency synchronized bidirectional radio system
03/17/2004CN1483269A System and method for detecting and correcting phase error between differential signals
03/17/2004CN1483268A Quadrature oscillator with feedback phase mismatch correction
03/17/2004CN1483267A Quadrature modulator with pulse-shaping
03/17/2004CN1482818A Method and apparatus for two-level weight and parallel disturbance cancellation under MPSK modulation
03/17/2004CN1482754A Method and apparatus for two-level weight and parallel disturbance cancellation under MQAM modulation
03/17/2004CN1142689C Method for implementing 8PSK equalizing demodulation in EDGE system
03/17/2004CN1142668C Fast ionterrelation method for communication system
03/17/2004CN1142667C Correction of amplitude and phase imbalance in PSK receiver
03/16/2004US6708235 Multi-modem implementation with host based and digital signal processor based modems
03/16/2004US6708020 Calibration device
03/16/2004US6707866 Clock generator, clock generating method, and signal receiver
03/16/2004US6707863 Baseband signal carrier recovery of a suppressed carrier modulation signal
03/16/2004US6707861 Demodulator for an HDTV receiver
03/16/2004US6707860 DC offset correction for direct-conversion receiver
03/16/2004US6707857 Reference signal pre-distortion for transmitter with frequency synthesizer based phase encoding
03/16/2004US6707856 Transmission of system configuration information
03/16/2004US6707850 Decision-feedback equalizer with maximum-likelihood sequence estimation and associated methods
03/16/2004US6707846 Correlation energy detector and radio communication apparatus
03/16/2004US6707845 Processing for improved performance and reduced pilot
03/16/2004US6707805 Method for initial power control for spread-spectrum communications
03/16/2004US6707804 Fast acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system
03/11/2004WO2004021661A1 Modulation and demodulation of a combination of analog and digital signals
03/11/2004WO2004021659A1 Method for generating i/q signal in a tdma transmitter and corresponding modulator
03/11/2004WO2004021617A1 Communication apparatus and communication method
03/11/2004WO2004021616A1 Transmission/reception apparatus and transmission/reception method
03/11/2004WO2004021605A1 Beam-steering and beam-forming for wideband mimo/miso systems
03/11/2004WO2004021588A1 Adaptive phase and gain imbalance cancellation
03/11/2004WO2004021570A1 Voltage control oscillator and quadrature modulator
03/11/2004WO2004021270A1 Method for regulating the input signal of a non-contact transponder
03/11/2004WO2003067751A3 Digital phase locked loop
03/11/2004WO2003023950A3 Receiver
03/11/2004WO2003021795A3 Method and apparatus for suppressing multipath interference usingprecoded pilots
03/11/2004US20040049725 Hybrid arq method with single constellation rearrangement
03/11/2004US20040048619 Apparatus and method for detecting a power ratio between a traffic channel and a pilot channel in a mobile communication system
03/11/2004US20040048592 Automatic gain control circuit controlling gain of receiver including two automatic gain control amplifiers
03/11/2004US20040048590 Trimming method for a transceiver using two-point modulation
03/11/2004US20040048574 Method and apparatus for adapting multi-band ultra-wideband signaling to interference sources
03/11/2004US20040047463 Robust symbol timing recovery circuit for telephone line modem
03/11/2004US20040047439 Path searcher using reconfigurable correlator sets
03/11/2004US20040047435 Channel estimator for WLAN
03/11/2004US20040047434 Apparatus and method for WGIO phase modulation
03/11/2004US20040047431 Process and device for modulating a carrier with amplitude and phase error compensation
03/11/2004US20040047430 Nyquist filter and method
03/11/2004US20040047427 Method and device for transmitting data on at least one electrical power supply line
03/11/2004US20040047410 Method and apparatus for compensating for phase error of digital signal
03/11/2004US20040047372 Techniques for communicating information using hermite-gaussian basis functions
03/11/2004US20040047368 Frame synchronization for OFDM systems
03/11/2004US20040047316 Method and apparatus for generating complex four-phase sequences for a CDMA communication system
03/11/2004US20040047296 Systems and methods for high rate OFDM communications
03/11/2004US20040047285 Sub-banded ultra-wideband communications system
03/11/2004US20040047284 Transmit diversity framing structure for multipath channels
03/11/2004US20040046607 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals
03/11/2004US20040046541 Synthetic RF detection system and method
03/11/2004US20040046524 Signal processing of an amplitude-modulated and/or phase-modulated high frequency signal
03/11/2004DE10335306A1 Vorrichtung und Verfahren für das detektieren eines Leistungsverhältnisses zwischen einem Verkehrskanal und einem Pilotkanal in einem mobilen Kommunikationssystem Apparatus and method for detecting a power ratio between a traffic channel and a pilot channel in a mobile communication system
03/11/2004DE10241959A1 Signal transmission method in radio communication system, includes several intermediate stations with antennas configured as a single smart antenna
03/11/2004DE10239810A1 Verfahren und Sendeeinrichtung zum Übertragen von Daten in einem Mehrträgersystem The method and transmitting means for transmitting data in a multicarrier system
03/10/2004EP1396973A1 Process and device for modulation of a carrier with amplitude and phase error compensation
03/10/2004EP1396972A2 Multicarrier transmission of two data sets
03/10/2004EP1396971A1 Method for demodulating OFDM signals with sampling rate mismatch
03/10/2004EP1396970A1 Method for scaling signal peaks and corresponding transmitter
03/10/2004EP1396953A1 Demodulation timing generation circuit and demodulation apparatus
03/10/2004EP1396947A1 Process for selecting a transmission channel and receiver of signals with antenna diversity
03/10/2004EP1396945A1 Synchronisation method for the uplink channel in a point-to-multipoint communication with ofdm modulation
03/10/2004EP1396166A1 A method for enabling a subscriber entity to actively communicate in a communication network
03/10/2004EP1396159A1 Multi-detection of heartbeat to reduce error probability
03/10/2004EP1396158A1 Transmittal of heartbeat signal at a lower level than heartbeat request
03/10/2004EP1396131A2 Methods and systems for sending side-channel data during data inactive period
03/10/2004EP1396130A1 Narrow band chaotic bi-phase shift keying
03/10/2004EP1396129A1 Blind detection
03/10/2004EP1396109A1 Adaptive coding and modulation
03/10/2004EP1396101A1 Dynamic digital communication system control
03/10/2004EP1396088A2 Quadrature envelope-sampling of intermediate frequency signal in receiver
03/10/2004EP1396078A2 Signal processing of an amplitude-modulated and/or phase-modulated high-frequency signal
03/10/2004EP1293059B1 Hybrid arq method with signal constellation rearrangement
03/10/2004CN1481634A Appts and method for calculating channel decoder input soft decision value in data communications system
03/10/2004CN1481633A Multi-carrier communications with group-based subcarrier allocation
03/10/2004CN1481629A Endcoded QAM
03/10/2004CN1481606A Communications systems
03/10/2004CN1481162A Equalizing system contg comb filter in HDTV system
03/10/2004CN1481130A Method and system for generating low density parity code
03/10/2004CN1481116A Automatic configuration equipment for linking network media and its method
03/10/2004CN1481079A Strength indication circuit of high speed digital receiving signal
03/10/2004CN1141836C Radio receiver
03/10/2004CN1141824C Automatic identification method of conventional digital signal modulation mode having no need of a priori knowledge
03/10/2004CN1141815C Frequency automatic corrector for CDMA multipath fading channel
03/09/2004US6704562 N-port receiver with RF/LO isolation
03/09/2004US6704555 Apparatus and method for calibrating local oscillation frequency in wireless communications
03/09/2004US6704552 Mobile communication apparatus with an automatic frequency controller
03/09/2004US6704551 Calibration of in-phase and quadrature transmit branches of a transmitter
03/09/2004US6704518 Signal transmission system and signal transmission apparatus