Patents for H04L 27 - Modulated-carrier systems (89,721)
09/2001
09/12/2001EP1133092A1 Communication method and communication device
09/12/2001EP1133072A1 Communication terminal device and channel estimating method
09/12/2001EP1133067A2 Spreading code generation apparatus and CDMA receiver
09/12/2001EP1133066A1 Transmitter/receiver
09/12/2001EP1131974A2 Cellular communication device with scanning receiver and continuous mobile communication system employing same
09/12/2001EP1131929A1 Method and apparatus for the determination of the predistortion parameters in a quadrature modulator, by measuring the output power
09/12/2001EP1131928A1 Block joint source-channel coding
09/12/2001EP1131909A1 Channel spreading device and method for cdma communication system
09/12/2001EP1131896A2 Method and apparatus for saving current while performing signal strength measurements in a homodyne receiver
09/12/2001EP1068707A4 System, device and method for improving a defined property of transform-domain signals
09/12/2001EP1068706A4 System, device and method for improving a defined property of transform-domain signals
09/12/2001EP0847642A4 Am compatible digital waveform demodulation using a dual fft
09/12/2001EP0845176A4 Dynamic allocation of bandwidth for transmission of audio signals and a video signal
09/12/2001EP0796529A4 Orthogonal code division multiple access communication system having multicarrier modulation
09/12/2001CN1312979A System and method for narrowing the range of frequency uncertainty of a doppler shifted signal
09/12/2001CN1312912A Method and system for aiding GPS receivers via a cellular or PCS network
09/12/2001CN1071077C 数字数据接收机 Digital data receiver
09/11/2001US6289487 Efficient modified viterbi decoder
09/11/2001US6289069 Digital filter for rotation correction loop of a QPSK or QAM demodulator
09/11/2001US6289063 QAM receiver with improved immunity to crosstalk noise
09/11/2001US6289057 Method and apparatus for energy detection in a modem
09/11/2001US6289056 Broadband multicarrier modulator and corresponding programming method
09/11/2001US6289048 Apparatus and method for improving dynamic range in a receiver
09/11/2001US6289000 Frame control encoder/decoder for robust OFDM frame transmissions
09/11/2001US6288639 Low power installation of wireless security system devices
09/11/2001US6288631 Power-line carrier communications system
09/11/2001US6288619 Bias circuit for use in quadrature modulator
09/11/2001US6288618 Logic-based architecture for FSK modulation and demodulation
09/07/2001WO2001065848A1 System and method for improving video transmission over a wireless network.
09/07/2001WO2001065794A1 Method of multicarrier symbol synchronisation by using correlation
09/07/2001WO2001065793A1 Method and apparatus for buffering data samples in a software based adsl modem
09/07/2001WO2001065792A1 Method for estimating a radio frequency offset based on sequences of predefined symbols, and receiver implementing said method
09/07/2001WO2001065791A1 Correction of quadrature and gain errors in homodyne receives
09/07/2001WO2001065774A1 Scaleable architecture for multiple-port, system-on-chip adsl communications systems
09/07/2001WO2001065755A1 Method for synchronizing a plurality of chaotic systems and method for multichannel communication using synchronized chaotic systems
09/07/2001WO2001065749A1 Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system
09/07/2001WO2001065748A1 Encoding method for multicarrier transmission and encoder using the same
09/07/2001WO2001065706A2 Device for linearising a high-frequency amplifier
09/07/2001WO2001065703A2 High data-rate powerline network system and method
09/07/2001WO2001065702A2 A modulation scheme for fdd/tdd transceivers
09/07/2001WO2001003396A3 Equalization with dc-offset compensation
09/07/2001CA2336556A1 Method to determine a channel characteristic, and discrete wavelet transmitter and receiver to perform the method
09/06/2001US20010019593 xDSL sample rate compensation using phase balancing
09/06/2001US20010019583 Bi-directional viterbi equalization device
09/06/2001US20010019582 Frequency modulation method and modem unit employing such method
09/06/2001DE10065267A1 Digital modulation-demodulation method for symbol mapping in quadrature amplitude modulation using digital signal processor by converting bit vector to symbols using transfer function
09/05/2001EP1130919A2 Apparatus and method for digital data transmission
09/05/2001EP1130918A2 Apparatus and method for digital data transmission
09/05/2001EP1130868A2 Coprocessor for use in DMT modems
09/05/2001EP1130867A2 Receiver and method of detection, for the decoding of a received DQPSK, channel-coded signal
09/05/2001EP1130866A1 Correction of quadrature and gain errors in homodyne receivers
09/05/2001EP1130865A1 Dummy error addition circuit
09/05/2001EP1130864A2 Performance of analogue-mode operations, when transmitting audio signals, and data
09/05/2001EP1130863A2 Reception in the analogue mode of a wireless TDMA system
09/05/2001EP1130862A2 Bidirectional Viterbi equalization
09/05/2001EP1130861A1 Method for the estimation of a transmission or telecommunications channel
09/05/2001EP1130787A2 Composite trellis system and method
09/05/2001EP1129556A1 Method and apparatus for reducing distortion of digital data
09/05/2001EP1000491A4 Biphase modulator with balun design
09/05/2001EP0938783B1 Method for wireless information transfer
09/05/2001EP0848877B1 Process for transferring digital data via interference-affected radio channels and device for receiving digital data transmitted via interference-affected radio channels
09/05/2001EP0789958B1 Method of, and apparatus for, symbol timing recovery
09/05/2001CN1311923A Mobile communication terminal
09/05/2001CN1311575A Demodulation device for subcarrier frequency signals
09/05/2001CN1311574A Method and device for fulfilling analog operation during receiving data and instruction voice
09/05/2001CN1311573A Method and device for proceeding analog operation during transmitting audio frequency and data
09/05/2001CN1070667C Bidirectional demodulation method and apparatus
09/04/2001US6285881 Method and system for quickly finding a control channel in a private cellular system
09/04/2001US6285721 Method for assisting simple synchronization to the carrier of a dispersed-energy QPSK signal
09/04/2001US6285720 Method and apparatus for high data rate wireless communications over wavefield spaces
09/04/2001US6285718 Adaptive noise canceller
09/04/2001US6285708 Spread spectrum bit allocation algorithm
09/04/2001US6285654 Apparatus and method for symbol alignment in a multi-point OFDM or DMT digital communications system
09/04/2001US6285412 Adaptive pre-equalization apparatus for correcting linear distortion of a non-ideal data transmission system
09/04/2001US6285307 Method of and a device for analog signal sampling
09/04/2001US6285255 Adaptive compensation for carrier signal phase distortion
09/04/2001US6285251 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
09/04/2001CA2221904C Adaptive communication apparatus
09/04/2001CA2217839C A windowing technique for blind equalization
09/04/2001CA2217428C Artificial fading for frequency offset mitigation
08/2001
08/30/2001WO2001063872A1 Communication system with predistortion
08/30/2001WO2001063871A1 Coding method and use of a receiver with a convolutional decoder
08/30/2001WO2001063870A1 Multicarrier receiver with channel estimator
08/30/2001WO2001063868A1 Method and apparatus for implementing the training phase of adaptive channel equalization on a digital communications path
08/30/2001WO2001063867A1 Receiver
08/30/2001WO2001063827A1 Method and device for a built-in self-test on an integrated circuit modulator
08/30/2001WO2001063823A1 System for synchronising a multiple access digital telecommunication system
08/30/2001WO2001063813A1 Method for searching pilot signals to synchronize a cdma receiver with an associated transmitter
08/30/2001WO2001063812A1 Wireless communication transmitter and receiver
08/30/2001WO2001063792A2 Apparatus for linear transmitter with improved loop gain stabilization
08/30/2001US20010017902 Timing error detection circuit, demodulation circuit and methods thereof
08/30/2001US20010017900 Method to transfer trellis code modulated digital data over a digital subscriber line, and related modulator and demodulator devices
08/30/2001US20010017899 Qamd
08/30/2001US20010017898 Non-coherent sequence estimation receiver for modulations
08/30/2001US20010017897 Quadrature amplitude modulation receiver and carrier recovery method
08/30/2001US20010017896 Digital radio communication system and method
08/30/2001US20010017893 High efficiency line driver for high crest-factor signals such as DMT/ADSL signals
08/30/2001US20010017596 D/A conversion method and apparatus
08/30/2001DE10009596A1 Vorrichtung zur Linearisierung eines Hochfrequenz-Verstärkers Apparatus for linearization of an RF amplifier
08/30/2001DE10009485A1 Verfahren zur Vervielfachung von Codierungsstufen A method for multiplication of coding steps