Patents for H04L 27 - Modulated-carrier systems (89,721)
07/2003
07/10/2003WO2003056703A1 Multi-stage code generator and decoder for communication systems
07/10/2003WO2003056701A1 Transmitter having a sigma-delta modulator with a non-uniform polar quantizer and methods thereof
07/10/2003WO2003056355A1 Method and apparatus for signal receipt and acquisition
07/10/2003WO2003034610A3 Method and apparatus for determining power allocation in a mimo communication system
07/10/2003WO2003019791A3 System and method for reducing the peak power in multi-carrier modulation
07/10/2003WO2002073790A3 Quadrature receiver
07/10/2003WO2002056523A3 Method and apparatus to remove effects of i-q imbalances of quadrature modulators and demodulators in a multi-carrier system
07/10/2003WO2002051086A8 Estimation and correction of sampling timing error in discrete multitone (dmt) receiver by an iterative process over individual carriers
07/10/2003WO2002031990A3 Interference mitigation in wireless communications by training of interfering signals
07/10/2003US20030130824 Optimised bit allocation adapted for VDSL
07/10/2003US20030129954 Radio communication terminal and demodulating method
07/10/2003US20030128790 Method of, and receiver for, minimising carrier phase rotation due to signal adjustments and enhancements
07/10/2003US20030128780 Transmission method with fading distortion or frequency offset compensation
07/10/2003US20030128778 Demodulator and method for demodulating CPFSK-modulated signals using a linear approximation of the CPFSK signal
07/10/2003US20030128777 Decision directed phase locked loops (DD-PLL) with multiple initial phase and/or frequency estimates in digital communication systems
07/10/2003US20030128774 Receiver apparatus
07/10/2003US20030128772 Wireless impulse transmitter, receiver, and method
07/10/2003US20030128769 Apparatus and method for transmitting/receiving data according to channel condition in a CDMA mobile communication system with antenna array
07/10/2003US20030128768 System, decoder and method for transmitting, receiving and decoding high-speed digital data signals with reduced electromagnetic emissions
07/10/2003US20030128751 Method and apparatus for frequency-domain tracking of residual frequency and channel estimation offsets
07/10/2003US20030128743 Method and apparatus for signal receipt and acquisition
07/10/2003US20030128705 System and method for avoiding stall using timer for high-speed downlink packet access system
07/10/2003US20030128684 Coexistence of modulation schemes in a WLAN
07/10/2003US20030128678 Method and apparatus for performing frequency tracking based on diversity transmitted pilots in a CDMA communication system
07/10/2003US20030128675 System and method for coding and identification in a wireless transmit and receive protocol for single-frequency peripheral devices
07/10/2003US20030128660 OFDM communications apparatus, OFDM communications method, and OFDM communications program
07/10/2003US20030128659 Coexistence of OFDM and DSSS/CCK stations in a WLAN
07/10/2003US20030128656 Channel estimation and compensation techniques for use in frequency division multiplexed systems
07/10/2003US20030128070 Demodulator for an amplitude-modulated alternating signal
07/10/2003US20030128057 Line interface circuit, associated line drivers and methods of operating the same
07/10/2003CA2470756A1 Qam multiresolution system with automatic repeat request for each data stream
07/09/2003EP1326390A1 Impedance matching in line drivers
07/09/2003EP1326388A2 System and method for avoiding stall using timer for high-speed downlink packet access system
07/09/2003EP1326360A2 Communication system and method using mulitlevel modulation
07/09/2003EP1325600A1 Method for optimal estimation of a propagation channel relying solely on pilot symbols and corresponding estimator
07/09/2003EP1325581A2 Method and system for transmission in a noisy environment
07/09/2003EP1325580A2 Systems and methods for communicating spread spectrum signals using variable signal constellations
07/09/2003EP1325552A2 Calibration of a quadrature receiver
07/09/2003EP1221213B1 Method for producing a test signal with a predetermined signal-to-noise ratio on a freely selectable output frequency
07/09/2003EP0974210B1 System for transmitting high-speed added-value services in terrestrial digital broadcasting
07/09/2003EP0904635B1 An apparatus, method and article of manufacture for carrier frequency compensation in an fm radio
07/09/2003EP0732832B1 Signal transmitter, signal receiver, and signal transmitting-receiving method
07/09/2003CN1429446A Gain controller for quadrature tranceiver
07/09/2003CN1429427A Method and apparatus for computing soft decision input metrics to TURBO decoder
07/09/2003CN1429426A Apparatus for radio frequency processing with dual modulus synthesizer
07/09/2003CN1114304C DC offset compensation for zero IF quadrature demodulator
07/08/2003US6591391 Method of generating an 8-VSB modulated signal
07/08/2003US6591100 Cellular communication device with scanning receiver and continuous mobile communication system employing same
07/08/2003US6591092 Signal receiving apparatus with a gain controller and method thereof
07/08/2003US6591090 Predistortion control for power reduction
07/08/2003US6591089 Mobile station with transmission power control system
07/08/2003US6590945 Method and apparatus for frequency offset compensation
07/08/2003US6590942 Least squares phase fit as frequency estimate
07/08/2003US6590941 Semi-NDA frequency correction at the receiving end in a packet transmission system
07/08/2003US6590906 Multi-carrier transmitter circuit and communication equipment
07/08/2003US6590893 Adaptive transmission system in a network
07/08/2003US6590871 Multi-carrier modulation apparatus and transmitter using the same
07/08/2003US6590860 Receiving device and signal receiving method
07/08/2003US6588950 Optical transmission system and transmitters and receivers
07/08/2003CA2415806A1 Transmission method with fading distortion or frequency offset compensation
07/08/2003CA2281542C Method and apparatus for analyzing a composite carrier signal
07/08/2003CA2269212C Method for wireless information transfer
07/08/2003CA2263679C Demodulation of asynchronously sampled data by means of detection-transition sample estimation in a shared multi-carrier environment
07/08/2003CA2251921C Receiver with frequency offset correcting function
07/08/2003CA2176401C A high-data-rate wireless local-area network
07/03/2003WO2003055252A1 Radio communication system and transmitter
07/03/2003WO2003055195A2 System and method for rate enhanced shdsl
07/03/2003WO2003055163A1 Method and circuit appartus for comrensating frequency offset of ofdm wireless communication system
07/03/2003WO2003055162A1 System and method for reducing noise induced by digital subscriber line (dsl) systems into services that are concurrently deployed on a communication line
07/03/2003WO2003055161A2 Method and apparatus for amplitude modulating data signals using a square wave signal
07/03/2003WO2003055126A1 Method and apparatus for establishing synchronization with a synchronization signal
07/03/2003WO2003055125A1 A synchronous signal detect circuit device of ofdm communication system and a detection method to detect synchronous signal of the device
07/03/2003WO2003055115A1 Method of detecting frequency offset in ofdm wireless communication system and the device thereof
07/03/2003WO2003055113A1 System and method of disharmonic frequency multiplexing
07/03/2003WO2003055097A2 Method and base station for providing phase-shift transmit diversity
07/03/2003WO2003055085A1 Joint demodulation using a viterbi equalizer having an adaptive total number of states
07/03/2003WO2003028276A3 Qpsk phase ambiguity corrector
07/03/2003WO2003005622A3 Modulator and signaling method
07/03/2003WO2002073870A3 Method of symbol timing synchronization in communication systems
07/03/2003US20030125082 Core Wireless engine
07/03/2003US20030124980 Analog bi-phase modulation
07/03/2003US20030123595 Multi-pass phase tracking loop with rewind of future waveform in digital communication systems
07/03/2003US20030123582 Joint equalization, soft-demapping and phase error correction in wireless system with receive diversity
07/03/2003US20030123577 Apparatus and method for M-ary demodulation in a digital communication system
07/03/2003US20030123575 Tranmission method and radio receiver
07/03/2003US20030123574 System and method for robust tone detection
07/03/2003US20030123571 All-digital symbol clock recovery loop for synchronous coherent receiver systems
07/03/2003US20030123567 Transmitter apparatus and communication system employing the same
07/03/2003US20030123566 Transmitter having a sigma-delta modulator with a non-uniform polar quantizer and methods thereof
07/03/2003US20030123564 Spectral power management for constrained transmissions using constellation shaping
07/03/2003US20030123562 Adaptive modem, pragmatic decoder and decoding method
07/03/2003US20030123561 QAM receiver
07/03/2003US20030123560 Method to mitigate effects of ISDN off/on transitions in ADSL
07/03/2003US20030123534 IQ imbalance correction
07/03/2003US20030123527 Method of compensating frequency error in communication system and apparatus for the same
07/03/2003US20030123526 Method and apparatus for rotating a phase of a modulated signal
07/03/2003US20030123525 Method and apparatus for adaptive linear equalization for walsh covered modulation
07/03/2003US20030123490 Synchronization method and apparatus
07/03/2003US20030123412 Method for balancing the ratio Eb/I in a service multiplexing CDMA system and telecommunication system using this method
07/03/2003US20030123384 Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays