Patents for H04L 27 - Modulated-carrier systems (89,721)
08/2001
08/21/2001US6278741 Timing recovery circuit in QAM modems
08/21/2001US6278725 Automatic frequency control loop multipath combiner for a rake receiver
08/21/2001US6278686 Construction of a multicarrier signal
08/21/2001US6278685 Robust transmission mode
08/21/2001US6278403 Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver
08/21/2001US6278391 Method and apparatus for D.C. offset correction in digital-to-analog converters
08/16/2001WO2001060007A1 Method and circuit arrangement for demodulation of a quadrature amplitude- or phase-modulated signal
08/16/2001WO2001060006A1 COMBINED TRANSMIT FILTER AND D-to-A CONVERTER
08/16/2001WO2001060005A1 Method for detecting the remaining carrier power on a multi-carrier signal that is qam-modulated in the 8k mode according to the dvb-t-standard
08/16/2001WO2001060004A1 8-psk transmission filtering using reduced look-up tables
08/16/2001WO2001060003A1 Method and apparatus for a carrier frequency control in a wireless communication system
08/16/2001WO2001059996A1 Peer-to peer communication system with receiver adjustment using stored transmission parameters
08/16/2001WO2001059980A1 Dtse at less than two complex samples per symbol
08/16/2001WO2001059962A1 Integrated beamforming/rake/mud cdma receiver architecture
08/16/2001WO2001059937A2 Multipath doppler-adjusted frequency tracking loop
08/16/2001WO2001059475A1 Device for transmitting data in a motor vehicle
08/16/2001US20010014101 Modulation/demodulation of pilot carrier means and method to perform the modulation/demodulation
08/16/2001US20010013814 Contactless IC card system
08/16/2001EP1124348A2 Uplink timing synchronization and access control
08/16/2001EP1124347A2 Uplink timing synchronization and access control
08/16/2001EP1124344A1 Ofdm communication device
08/16/2001EP1123613A1 Fractional-bit transmission using multiplexed constellations
08/16/2001EP1123610A1 Digital variable symbol rate modulation
08/16/2001CA2660923A1 Access channel structure for wireless communication system
08/16/2001CA2397390A1 Multipath doppler-adjusted frequency tracking loop
08/15/2001CN1308808A Method for transmitting digital data via a transmission channel subject to peturbations occuring in bursts
08/15/2001CN1308798A Calceller for jamming wave by interence
08/15/2001CN1308471A Mobile comm message transmitting and receiving method and equipment
08/15/2001CN1308462A Middle layer multidimensional frequency transmission method for radio broadcast TV network
08/15/2001CN1308461A Middle layer multidimensional frequency transmission method for cable TV network
08/15/2001CN1308439A Carrier distribution message in multiple carrier system
08/15/2001CN1308427A Signal structure, detection and estimation of timing sync and access of upstream link
08/15/2001CN1308417A Channel estimation device and method for radio system
08/14/2001US6275990 Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith
08/14/2001US6275688 Double balanced mixer
08/14/2001US6275554 Digital symbol timing recovery network
08/14/2001US6275551 Apparatus for receiving digital information signals
08/14/2001US6275548 Timing recovery system
08/14/2001US6275544 Baseband receiver apparatus and method
08/14/2001US6275543 Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing
08/14/2001US6275542 Direct conversion receiver including mixer down-converting incoming signal, and demodulator operating on downconverted signal
08/14/2001US6275539 System and method for modulating a frequency signal
08/14/2001US6275525 Enhanced method for adaptive equalization technique in mobile wireless systems
08/14/2001US6275522 Method for allocating data and power in a discrete, multi-tone communication system
08/14/2001CA2214061C Differential psk signalling in cdma networks
08/09/2001WO2001058125A2 Digital subscriber line communication system
08/09/2001WO2001058106A1 Method and device for synthesizing, transmitting, receiving and evaluating multivariate signals according to their form and multiposition and locally according to their spectrum
08/09/2001WO2001058105A1 System and method for near optimal joint channel estimation and data detection for cofdm systems
08/09/2001WO2001058104A1 Timing reproducing device and demodulator
08/09/2001WO2001058078A1 High speed downhole communications network having point to multi-point orthogonal frequency division multiplexing
08/09/2001WO2001058059A1 Method and apparatus for achieving 180° phase invariant transmission in a pcm modem system
08/09/2001WO2001058027A2 Pilot symbol assisted modulation and demodulation in wireless communication systems
08/09/2001WO2001058024A1 Method of differential coding and modulation
08/09/2001WO2001058022A1 D/a conversion method and apparatus
08/09/2001WO2001058012A2 High-efficiency power modulators
08/09/2001US20010012783 Carrier constellation information in multi-carrier systems
08/09/2001US20010012776 Distributed circuit switchboard radio communications network
08/09/2001US20010012762 Transmission system
08/09/2001US20010012322 Signal encoding transmission apparatus, signal decoding receiving apparatus, and program recording medium
08/09/2001US20010012275 Radio Communication system
08/09/2001DE10014463A1 Verfahren und Schaltungsanordnung zur sicheren Übertragung in Digitalübertragungssystemen Method and circuit arrangement for secure transmission in digital communication systems
08/09/2001DE10005497A1 Verfahren und Schaltungsanordnung zum Demodulieren eines quadraturamplituden- oder phasenmodulierten Signals Method and circuit for demodulating a quadrature amplitude or phase modulated signal
08/09/2001DE10005287A1 Verfahren zum Bestimmen der Restträgerleistung bei einem nach dem DVB-T-Standard im 8K-Modus QAM-modulierten Multiträgersignal Method for determining the residual carrier power in a accordance with the DVB-T standard in the 8K mode QAM-modulated multi-carrier signal
08/08/2001EP1122893A1 Transmission apparatus and method of signal-point generation
08/08/2001EP1122650A2 Communication system with multicarrier telephony transport
08/08/2001EP1121789A1 Method and apparatus of providing adaptive equalization using sign permutation filtering
08/08/2001EP1121786A1 Fast dtmf identification
08/08/2001EP0779000B1 Code acquisition in a cdma communication system using multiple walsh channels
08/08/2001EP0623256B1 Variable speed asynchronous modem
08/08/2001CN1307751A Radio terminal device
08/08/2001CN1307749A Method and apparatus for d.c. offset carrection in digital-to-analog converters
08/08/2001CN1307423A Fast ionterrelation method for communication system
08/08/2001CN1307404A Phase-adjusting system
08/08/2001CN1069472C Error tracking loop
08/08/2001CN1069464C Receiver with quadrature decimation stage and method of processing digital signals
08/07/2001US6272326 Distortion compensation address generator, distortion compensating circuit, and transmitter
08/07/2001US6272190 System for wireless transmission and receiving of information and method of operation thereof
08/07/2001US6272186 Normal burst acquisition system for use in a cellular communications network
08/07/2001US6272184 Non-coherent frequency shift keying detection scheme
08/07/2001US6272168 Code sequence generator in a CDMA modem
08/07/2001US6271950 Optical differential phase shift keying transmission system having multiplexing, routing and add/replace capabilities
08/07/2001CA2214058C Method and system providing unified dpsk-psk signalling for cdma-based satellite communications
08/07/2001CA2199762C A transmission system for digital audio broadcasting using pseudo-random number sequences in frame headers
08/02/2001WO2001056239A2 Clock synchronization, frequency synchronization, channel sounder and equalizer for ofdm using pilots equidistant in the frequency domain
08/02/2001WO2001056238A1 Transverter control mechanism for a wireless modem in a broadband wireless access system
08/02/2001WO2001056188A1 Offset carrier frequency correction in a two-way broadband wireless access system
08/02/2001WO2001056177A1 Radiotelephone receiver and method with improved dynamic range and dc offset correction
08/02/2001US20010011213 Modem using a digital signal processor and a signal based command set
08/02/2001US20010010713 Power amplifier having negative feedback circuit for transmitter
08/02/2001US20010010709 Distortion compensating device
08/02/2001US20010010703 Pattern generation circuit, multi-path detection circuit employing the same and multi-path detection method
08/02/2001DE10001854A1 Verfahren und Vorrichtung zur Ermittlung der Trägerfrequenz von Basisstationen im mobilen Empfänger eines mit W-CDMA arbeitenden zellularen Mobilfunksystems Method and apparatus for determining the carrier frequency of base stations in the mobile receiver operating with a W-CDMA cellular mobile radio system
08/02/2001DE10000958A1 Schaltungsanordnung zur Erzeugung eines quadraturamplitudenmodulierten Sendesignals Circuit arrangement for producing a quadrature amplitude modulated transmission signal
08/01/2001EP1120944A2 Modulation system with on-line IQ calibration
08/01/2001EP1120943A1 Transmission of bit and gain allocation tables in multicarrier systems
08/01/2001EP1120942A2 Demodulator with automatic quadrature control
08/01/2001EP1120929A1 Multi-carrier signal transmitter and multi-carrier signal receiver
08/01/2001EP1120927A2 Receiver and method for detection of the received power
08/01/2001EP1120902A2 Transmitter and mobile station
08/01/2001EP1120899A1 Demodulation structure and method