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)
10/2000
10/05/2000WO2000059168A1 Adaptive filter equalisation techniques
10/05/2000WO2000032003A3 Cellular communication device with scanning receiver and continuous mobile communication system employing same
10/05/2000WO2000031939A3 Method for determining frequency sub-band division in modems based on multicarrier modulation technique and system utilizing the method
10/05/2000WO2000010272A9 Efficient spectral saving fqpsk and fqam signal transmission and reception systems
10/05/2000DE19914694A1 Verfahren zur FSK-Demodulation Method for FSK demodulation
10/05/2000DE19914600A1 Synchronization method for orthogonal frequency division multiplexing (OFDM) radio receivers by inserting symbol sequence in data stream
10/04/2000EP1041790A2 Symbol timing recovery for OFDM demodulator
10/04/2000EP1041789A2 OFDM modulator synchronized to external device
10/04/2000EP1041788A2 Carrier frequency correction using pilot blocks
10/04/2000EP1041787A1 Apparatus for generating absolute phase of signal received by receiver
10/04/2000EP1041786A2 Method for demodulating FSK-modulated signals
10/04/2000EP1041785A2 Amplitude demodulator for computerized tomography systems
10/04/2000EP1041784A2 Adaptive power amplification for cable modems
10/04/2000EP1041783A2 Encoding, modulation and multiplexing for optical transmission
10/04/2000EP1041781A1 Soft output metrics generation for symbol detectors
10/04/2000EP1041766A2 Apparatus for communicating multiple digital representations of a signal
10/04/2000EP1041764A2 Multi-rate transmission apparatus
10/04/2000EP1041763A2 Unequal error protection in multi-carrier transmission
10/04/2000EP1041734A1 Radio transmission method in a wireless telecommunications system with pilot and data channels estimation
10/04/2000EP1041731A1 Method and arrangement to estimate transmission channel characteristics
10/04/2000EP1041726A2 A receiving apparatus of spectrum spread communication system
10/04/2000EP1041556A2 Data demodulating method and apparatus
10/04/2000EP1040628A1 Bit allocation in a transmission system
10/04/2000EP1040627A1 Group delay equalizer
10/04/2000EP1040594A1 Spread spectrum multipath demodulator for a multichannel communication system
10/04/2000CN1269092A DC offset compensation for zero IF quadrature demodulator
10/04/2000CN1269081A Method for parameter estimation and receiver
10/04/2000CN1269070A Transmitting device for transmitting a digital information signal alternately in encoded form and non-encoded form
10/04/2000CN1268830A Multiple frequency band data communication equipment and communication method and storage medium therefor
10/04/2000CN1268829A Soft output prodn. used for code element detector
10/04/2000CN1268822A Receiving device for spread spectrum communication system
10/04/2000CN1268815A Radio transmission method used for radio communication system
10/04/2000CN1268338A Radio frequency slide ring receiver used for computerized laminagraphic system
10/03/2000US6128353 Code division multiple access system with dynamic histogram control
10/03/2000US6128351 Filter for multicarrier communication system and method for peak power control therein
10/03/2000US6128350 Method and apparatus for reducing peak to average power ratio in digital broadcasting systems
10/03/2000US6128349 Method and apparatus for superframe bit allocation
10/03/2000US6128348 Method for configuring data and energy parameters in a multi-channel communications system
10/03/2000US6128335 Software rate adaptable modem with forward compatible and expandable functionality and method of operation
10/03/2000US6128300 Line card with modem interace
10/03/2000US6128276 Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays
10/03/2000US6127960 Direct digital downconverter based on an oscillator/counter analog-to-digital converter
10/03/2000US6127897 Zero-crossing detection type clock recovery circuit operated at symbol rate
10/03/2000US6127884 Differentiate and multiply based timing recovery in a quadrature demodulator
10/03/2000CA2182835C Digital radiocommunication receiver
10/03/2000CA2142769C Convolutional coding and viterbi decoding system transparent to ˜ and ˜/2 phase jumps, applicable to tdma transmissions particularly
09/2000
09/30/2000CA2300398A1 Method and arrangement to estimate transmission channel charateristics
09/28/2000WO2000057625A2 Satellite communication card
09/28/2000WO2000057609A1 Phase-noise compensated digital communication receiver and method therefor
09/28/2000WO2000057592A1 Communication blocking device and communication blocking method
09/28/2000WO2000057564A1 Method of receiving information
09/28/2000WO2000057563A1 Radio transmitters
09/28/2000WO2000057545A1 Quadrature modulator with carrier leakage compensation
09/27/2000EP1039715A1 OFDM transmission signal repeater
09/27/2000EP1039714A2 Block code for multicarrier transmission
09/27/2000EP1039713A2 Reduction of delay in multicarrier receivers
09/27/2000EP1039712A2 Avoding false locks in quadrature demodulators
09/27/2000EP1039711A1 Digital demodulator
09/27/2000EP1039710A1 Carrier reproduction circuit
09/27/2000EP1039709A1 Receiver
09/27/2000EP1039708A1 Circuit for capturing frame sync signal in receiver
09/27/2000EP1039707A1 Digital radio receiver
09/27/2000EP1039706A1 Iterative differential detector
09/27/2000EP1039705A2 Method, receiver and radio station for detecting data symbols
09/27/2000EP1039704A2 Data modulation with provision of a symbol timing reference
09/27/2000EP1039703A2 PSK demodulator with correction of DC offset
09/27/2000EP1039682A2 Multiresolution transmission, in particular with multicarrier singals
09/27/2000EP1039681A2 Mutliresolution transmition and error correction coding, with multicarrier signals
09/27/2000EP1039680A2 Multiresolution transmission and error correction coding with multicarrier modulation
09/27/2000EP1039679A2 Multiresolution transmission with multicarrier signals
09/27/2000EP1039678A2 Multiresolution transmission, particularly with multicarrier signals
09/27/2000EP1039677A2 Multiresolution transmission and error correction coding, with multicarrier modulation
09/27/2000EP1039676A2 Multiresolution transmission, in particular with multicarrier signals
09/27/2000EP1039675A2 Multiresolution transmission with multicarrier signals
09/27/2000EP1039674A2 Multiresoltion transmission and error correction coding with multicarrier signals
09/27/2000EP1039673A2 Multiresolution transmission and error correction coding with multicarrier signals
09/27/2000EP1039672A2 Multiresolution transmission, particularly for multicarrier systems
09/27/2000EP1039649A2 Method and apparatus for multiband data communication , and storage medium
09/27/2000EP1039628A1 Highly integrated radio frequency transmitter with image rejection, optionally auto-calibrated
09/27/2000EP1038380A1 Phase digitizer for radio communications
09/27/2000EP1038379A1 System, device and method for pcm upstream transmission utilizing an optimized transmit constellation
09/27/2000EP1038378A1 Device and method for precoding data signals for pcm transmission
09/27/2000EP1038356A1 Sigma-delta modulator-controlled phase-locked-loop circuit and associated method
09/27/2000EP1038257A1 System for the transmission of data from a data carrier to a station by means of at least one other auxiliary carrier signal
09/27/2000EP0739563B1 Higher order digital phase loop filter
09/27/2000CN1268271A Adaptive pre-equalization apparatus for correcting linear distortion of a non-ideal data transmission system
09/27/2000CN1268263A Line card with MODEM interface
09/27/2000CN1267986A Differential detector
09/27/2000CN1267957A Power control circuit and transmitter
09/26/2000US6125266 Dual band architectures for mobile stations having transmitter linearization feedback
09/26/2000US6125152 Output signal modification providing phase amplified information for soft decision decoding
09/26/2000US6125151 Carrier recovery circuit
09/26/2000US6125150 Transmission system using code designed for transmission with periodic interleaving
09/26/2000US6125148 Method for demodulating information in a communication system that supports multiple modulation schemes
09/26/2000US6125136 Method and apparatus for demodulating trellis coded direct sequence spread spectrum communication signals
09/26/2000US6125135 System and method for demodulating global positioning system signals
09/26/2000US6125124 Synchronization and sampling frequency in an apparatus receiving OFDM modulated transmissions
09/26/2000US6125103 Method and device for reducing the crest factor in digital transmission procedures
09/26/2000US6124766 Frequency converter circuit for cable modem tuner
09/26/2000CA2238299C A filter co-processor
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