Patents for H04L 27 - Modulated-carrier systems (89,721)
08/2001
08/30/2001DE10009443A1 Empfänger und Verfahren zum Detektieren und Dekodieren eines DQPSK-modulierten und kanalkodierten Empfangssignals Receiver and method for detecting and decoding a DQPSK-modulated and channel-encoded receive signal
08/30/2001DE10008543A1 Codierverfahren und Verwendung eines Empfangsgeräts mit einem Faltungsdecoder Coding and use of a receiver with a convolutional decoder
08/29/2001EP1128626A1 Transmitter device having a modulation closed loop
08/29/2001EP1128625A1 Trellis shaping for single carrier modulation systems
08/29/2001EP1128624A2 Code selection for suppression of adjacent channel interference in FDM DPSK
08/29/2001EP1128623A1 Method to minimise transmission power of idle ATM cells in a XDSL system with trellis coded modulation
08/29/2001EP1128622A2 Compensation of sampling rate errors for xDSL, using phase balancing
08/29/2001EP1128621A2 Carrier and symbol synchronisation for 8-DPSK signals
08/29/2001EP1128620A1 Apparatus for detecting frequency offset
08/29/2001EP1128619A2 Displaying interference-free signals
08/29/2001EP1128595A2 Synchronisation of a radio reception apparatus
08/29/2001EP1128590A1 Synchronisation system of a digital multiple access telecommunication system
08/29/2001EP1128586A2 Digital radio communication system and method with adaptive modulation
08/29/2001EP1127456A1 Ntsc interference rejection filter
08/29/2001EP1127440A1 Phase interpolation receiver for angle modulated rf signals
08/29/2001EP1127424A2 Dual mode qam/vsb receiver
08/29/2001EP1127405A1 Frequency-stabilized receiver/transmitter circuit arrangement
08/29/2001CN1310903A Differentiate and multiply based timing recovery in a quadrature demodulator
08/29/2001CN1310899A Method for determining sampling phase and method for detecting synchronisation word
08/29/2001CN1310898A Method and apparatus for mapping bits to an information burst
08/29/2001CN1310880A Method and apparatus for modulating digital data
08/29/2001CN1310558A Digital radio communication system and digital radio communication mode
08/29/2001CN1310538A Method for displaying signal under interference condition between symbols
08/29/2001CN1310528A Fast Fourier transformation window synchronization with decreased complexity for orthogonal frequency division multiplexing system
08/29/2001CN1070327C Pi/4 shift dqpsk modulator
08/29/2001CN1070325C Method and apparatus for estimating channel quality in receiver
08/28/2001US6282683 Communication system with multicarrier telephony transport
08/28/2001US6282500 Accumulated phase measurement using open-loop phase estimation
08/28/2001US6282411 Mobile communication terminal device
08/28/2001US6282292 Amplitude insensitive synchronization of nonlinear systems
08/28/2001US6282273 Communication server apparatus using frequency multiplexing and method
08/28/2001US6282252 Receiver for data transmission
08/28/2001US6282249 Satellite receiver
08/28/2001US6282248 Variable baud rate demodulator
08/28/2001US6282246 Frequency modulation method and modem unit employing such method
08/28/2001US6282237 Multiple transmission system wherein analog signal is transformed to base band, random-transformed and superimposed on dispersed signal points in vector signal space
08/28/2001US6282236 Modem designs, and systems using the modem designs for communicating information between a number of remote locations and one or more central locations
08/28/2001US6282235 Signal processing apparatus
08/28/2001US6282228 Spread spectrum codes for use in communication
08/28/2001US6282180 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
08/28/2001US6282168 Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals
08/28/2001US6282167 OFDM signal organized so as to simplify reception
08/28/2001US6281935 System and method for controlling a transmitter frequency
08/28/2001US6281829 Multi-mode analog front-end
08/23/2001WO2001061956A1 Method and apparatus for minimizing cross talk due to discrete multi-tone transmission in cable binders
08/23/2001WO2001061955A1 Psk receiver with amplitude reconstruction and digital matched filter
08/23/2001WO2001061952A1 Delayed decision feedback log-map equalizer
08/23/2001WO2001061910A1 System for the transmission of data by means of multiple transmission channels with a protective band between each channel
08/23/2001WO2001061907A2 Calibration system for a communications system
08/23/2001WO2001061880A1 Method for frequency offset estimation in a direct sequence spread spectrum communications receiver
08/23/2001WO2001061863A1 Isolation system with analog communication across an isolation barrier
08/23/2001WO2000007301A3 Hardware-efficient transceiver with delta-sigma digital-to-analog converter
08/23/2001US20010016019 Automatic gain control circuit, data communication device and automatic gain control method
08/23/2001US20010016017 Quadrature modulator
08/23/2001US20010016016 Power amplification using a direct-upconverting quadrature mixer topology
08/23/2001US20010016015 Transmission apparatus and method of signal-point generation
08/23/2001US20010016014 Communications system
08/23/2001US20010016013 Feher keying (FK) modulation and transceivers including clock shaping processors
08/23/2001US20010016004 Real/complex dual combination channel eqalizer
08/23/2001US20010015998 Automatic power control system for a code division multiple access (CDMA) communications system
08/23/2001US20010015997 Packet spread-spectrum receiver
08/23/2001US20010015996 Packet spread-spectrum transmitter
08/23/2001US20010015995 Radio and communication method using a transmitted intermediate frequency
08/23/2001US20010015988 Signal synchronization method and receiver device for packet communication
08/23/2001US20010015954 Orthogonal frequency division multiplexing receiver device
08/23/2001EP1145449A3 Hardware-efficient transceiver with delta-sigma digital-to-analog converter
08/23/2001DE19962341C1 Sender zum Versenden von Signalen über Funkkanäle und Verfahren zum Senden von Signalen über Funkkanäle Transmitter for sending signals through radio channels and method for transmitting signals via radio channels
08/23/2001DE10005558A1 Vehicle data communications device uses dual channel communications microwave frequencies for intermediate frequency processing by conventional parts
08/23/2001CA2336763A1 Code selection for suppression of adjacent channel interference in fdm dpsk
08/22/2001EP1126730A2 Method for phase change detection of a signal/tone
08/22/2001EP1126673A2 Frequency offset correction in a muliticarrier receiver
08/22/2001EP1126647A1 Ofdm communication device
08/22/2001EP1126626A2 Pattern generation circuit, multi-path detection circuit employing the same and multi-path detection method
08/22/2001EP1126625A1 Method of transmission and device to carry out said method
08/22/2001EP1125411A1 Method and system for adjusting spurious lines of an output frequency spectrum in a sideband frequency translating device
08/22/2001EP1125409A1 Method for measuring and evaluating multi-carrier signals
08/22/2001EP1125408A1 Method and apparatus for scaling modem transfer capacity in a multi-channel communications system
08/22/2001EP1125407A1 Method for ask demodulation and ask demodulator
08/22/2001EP1125404A1 Equalization method especially for offset modulation modes
08/22/2001EP1125401A1 Internet gigabit ethernet transmitter architecture
08/22/2001EP1125390A1 Method for displaying the modulation error of a multiple carrier signal
08/22/2001EP1125377A1 Method for processing ofdm signals simultaneously received via a multiple antenna system
08/22/2001EP1125363A1 Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter
08/22/2001EP1125359A1 Method and system for down-converting an electromagnetic signal
08/22/2001CN1309858A Transmitter/receiver for GMSK and offset-QAM
08/22/2001CN1309841A Radio terminal device
08/22/2001CN1309840A Distortion correction circuit for direct conversion receiver
08/22/2001CN1309838A De-interleave circuit
08/22/2001CN1309837A BS digital broadcasting receiver
08/22/2001CN1309835A Single chip CMOS transmitter/receiver and VCO-mixer structure
08/22/2001CN1309484A Sampling offset correction in quadrature frequency division multiplex system
08/22/2001CN1309483A Local oscillator frequency correction in quadrature frequency-division multiplex system
08/22/2001CN1309471A Viterbi decoder with reduced bit in branching metering computation processing
08/22/2001CN1070007C Method for formatting of data for transmission
08/21/2001US6279158 Dynamic bandwidth allocation
08/21/2001US6279022 System and method for detecting symbol boundary in multi-carrier transmission systems
08/21/2001US6278865 Receiver and method for measuring the frequency difference between a turning frequency and a transmission frequency
08/21/2001US6278754 Demodulation of asynchronously sampled data by means of detection-transition sample estimation in a shared multi-carrier environment
08/21/2001US6278746 Timing recovery loop circuit in a receiver of a modem
08/21/2001US6278743 Non linear amplitude precorrection for HDTV transmitter