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)
08/2005
08/10/2005CN1652466A Method and device for generating clock signal
08/10/2005CN1652238A Demodulator, disc driving device and phase regulating method
08/10/2005CN1652135A Method and circuit arrangement for wireless data transmission
08/10/2005CN1214632C Vertical phase demodulation circuit
08/10/2005CN1214587C Method and apparatus for modulating radio signal using digital amplitude and phase control signals
08/10/2005CN1214586C Fading resistant multi-level QAM receiver
08/10/2005CN1214585C DC-offset correction circuit having DC control loop and DC blocking circuit
08/10/2005CN1214584C Method and device for Walsh-modulated self-adaptive linear equalisation
08/10/2005CN1214558C Method and device in multi-tone transmission system
08/10/2005CN1214437C Synchronizing pulse generating method, method of decoding OFDM signal and OFDM receiver
08/10/2005CN1214252C Method for increasing noise immunity when receiving signals from satellite navigation systems and device for realising the same
08/09/2005US6928301 Distributed architecture wireless RF modem
08/09/2005US6928275 Method and apparatus for compensating local oscillator frequency error
08/09/2005US6928272 Distortion compensating circuit for compensating distortion occurring in power amplifier
08/09/2005US6928246 Optical transmission system for frequency-multiplexed signal
08/09/2005US6928121 Digital transmitter with constrained envelope and spectral regrowth over a plurality of carriers
08/09/2005US6928120 Methods and apparatus for use in reducing residual phase error in OFDM communication signals
08/09/2005US6928111 Method and apparatus for controlling equalizer using sync signal in digital vestigial sideband system
08/09/2005US6928108 Modem with firmware upgrade feature
08/09/2005US6928103 Rach receiving apparatus
08/09/2005US6928101 FMOD transceivers including continuous and burst operated TDMA, FDMA, spread spectrum CDMA, WCDMA and CSMA
08/09/2005US6928084 OFDM communication system and method having a reduced peak-to-average power ratio
08/09/2005US6928064 Fast acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system
08/09/2005US6928048 Guard section length detecting device and method for orthogonal frequency division multiplexing system receiver
08/09/2005US6928047 Precoded OFDM systems robust to spectral null channels and vector OFDM systems with reduced cyclic prefix length
08/09/2005US6928046 Frame synchronization of an OFDM signal
08/09/2005US6927889 Process and device for detecting and processing signal waves
08/09/2005US6927728 Method and apparatus for multi-antenna transmission
08/09/2005US6927708 Mapping system for transmission and reception of multiple data types
08/09/2005US6927644 Low-loss tunable ferro-electric device and method of characterization
08/09/2005CA2376014C System and method for data scrambling to reduce the crest factor in an ofdm waveform
08/09/2005CA2356161C Method and apparatus for controlling equalizer using sync signal in digital vestigial sideband system
08/09/2005CA2265842C Cable network using atm cells for prioritized packet transmission
08/09/2005CA2164593C Digital broadcast system with range extension broadcast stations
08/04/2005WO2005071913A1 Data detection for a hierarchical coded data transmission
08/04/2005WO2005071912A1 System and method for selecting data rates to provide uniform bit loading of subcarriers of a multicarrier communication channel
08/04/2005WO2005071911A1 Frequency error estimation and frame synchronization in an ofdm system
08/04/2005WO2005071910A1 Frame structure for wireless multicarrier communication
08/04/2005WO2005071909A1 Method and apparatus for setting, transmitting and receiving data for virtual carrier sensing in wireless network communication
08/04/2005WO2005071876A1 Adaptive channelization scheme for high throughput multicarrier systems
08/04/2005WO2005071867A2 Synchronized broadcast/multicast communication
08/04/2005WO2005071863A1 Pilot signal manipulation in transmit diversity communications
08/04/2005WO2005071853A1 Real-time formation of optimal power spectral density masks
08/04/2005WO2005071849A1 Transmitter apparatus and wireless communication apparatus
08/04/2005WO2005069773A2 Isolation barrier for interfacing a line side device to a system side device
08/04/2005WO2005039054A3 Dual phase pulse modulation encoder circuit
08/04/2005WO2005029758A3 Multiple antenna systems and methods using high-throughput space-frequency block codes
08/04/2005US20050171995 Fixed OFDM wireless MAN utilizing CPE having internal antenna
08/04/2005US20050171962 Data compression system based on tree models
08/04/2005US20050170805 Mobile radio receiver device
08/04/2005US20050170781 Channel adaptation using variable sounding signal rates
08/04/2005US20050169418 Method and circuit for adaptive control of the bandwidth of a carrier recovery loop in radio transmission systems
08/04/2005US20050169412 Pattern-dependent equalization and detection
08/04/2005US20050169411 Peak-to-average power reduction for FM OFDM transmission
08/04/2005US20050169410 Digital radio receiver
08/04/2005US20050169408 Coarse frequency synchronization method and apparatus in an orthogonal frequency division multiplexing (OFDM) system
08/04/2005US20050169407 Receiver circuit and a method for its operation
08/04/2005US20050169404 Demodulator and address information extractor
08/04/2005US20050169402 Apparatus and method for adjusting quadrature modulator, communication apparatus and program
08/04/2005US20050169401 Frequency modulated OFDM over various communication media
08/04/2005US20050169400 Backward compatible dvb-s standard transmission system
08/04/2005US20050169395 Cost-effective multi-channel quadrature amplitude modulation
08/04/2005US20050169394 Method and device for loop timing recovery based on maximum constellation signal
08/04/2005US20050169393 Receiver device of communication system
08/04/2005US20050169392 Efficient low-power mode for multicarrier communications
08/04/2005US20050169391 Radio communications system using adaptive modulation, radio transmission apparatus and radio receiving apparatus
08/04/2005US20050169363 Method and system for maximizing data throughput rate in a power line communications system by modifying payload symbol length
08/04/2005US20050169358 Computationally and memory efficient tone ordering scheme
08/04/2005US20050169357 Reliable multicarrier communication in the presence of timing phase error
08/04/2005US20050169351 Transmission method and transmitter
08/04/2005US20050169229 Apparatus and method for allocating subchannels adaptively according to frequency reuse rates in an orthogonal frequency division multiple access system
08/04/2005US20050169166 OFDM receiving device and OFDM receiving method
08/04/2005US20050169165 Method for estimating time and frequency offset in an OFDM system
08/04/2005US20050169164 Transport of modulation symbols in a communications system
08/04/2005US20050168324 Method and circuit arrangement for wireless data transmission
08/04/2005US20050168253 Method and device for generating clock signal
08/04/2005US20050168240 FSM closure of generalized tree models
08/04/2005DE10349739A1 Verfahren und Vorrichtung zum Interpolieren oder Dezimieren eines Signals Method and apparatus for interpolating or decimating a signal
08/04/2005DE10223396B4 Eingangsschaltung für einen HF-Sendebaustein Input circuit for an RF transmitter module
08/04/2005DE10202932B4 Übertragung mit DS-CDMA und CPM Transmission with DS-CDMA and CPM
08/04/2005DE102004038850A1 Gleitfenster Sliding window
08/04/2005CA2553944A1 Data detection for a hierarchical coded data transmission
08/04/2005CA2553917A1 Method and apparatus for setting, transmitting and receiving data for virtual carrier sensing in wireless network communication
08/04/2005CA2552660A1 Adaptive bandwidth allocation method and system for av signal distribution
08/04/2005CA2525239A1 Synchronized broadcast/multicast communication
08/03/2005EP1560408A1 xDSL-line-interface-circuit
08/03/2005EP1560391A2 Apparatus and method for adjusting quadrature modulator, communication apparatus and program
08/03/2005EP1560390A1 Adaptive control of the bandwidth of a carrier recovery loop in presence of local oscillator phase noise
08/03/2005EP1560359A1 OFDM communication system and method
08/03/2005EP1560346A1 Distortion compensation amplifying apparatus and base station
08/03/2005EP1559281A1 Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems
08/03/2005EP1559254A1 Training sequence for linearizing an rf amplifier
08/03/2005EP1559253A2 Maximizing power and spectral efficiencies for layered and conventional modulations
08/03/2005EP1559252A1 Channel estimation using the guard interval of a multicarrier signal
08/03/2005EP1559231A2 Mimo system with multiple spatial multiplexing modes
08/03/2005EP1559228A1 A method of determining feedback in a communication system
08/03/2005EP1559209A2 Channel estimation and spatial processing for tdd mimo systems
08/03/2005EP1525685A4 Method and apparatus to establish constellations for imperfect channel state information at a receiver
08/03/2005EP1488543A4 Transmit processing using receiver functions
08/03/2005EP1142143B1 Method for transmitting signals in a communication device
1 ... 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 ... 898