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
10/25/2000EP1046224A1 Radio transmitter
10/25/2000EP1046223A1 Quadrature modulator and demodulator
10/25/2000CN1271220A 频移电路及频移方法 Frequency shift circuit and a frequency shift method
10/25/2000CN1057885C Phase detector in carrrier recovery network for vestigial sideband single
10/25/2000CN1057884C System and method for generating single waveforms in CDMA celular telephone system
10/24/2000US6137848 Method and system for joint timing recovery and channel estimation for DMT modems
10/24/2000US6137847 Demodulating digital video broadcast signals
10/24/2000US6137846 AFC circuit for a frequency scanning FSK receiver
10/24/2000US6137841 Signal power adjustment for QAM communication systems
10/24/2000US6137839 Variable scaling of 16-bit fixed point fast fourier forward and inverse transforms to improve precision for implementation of discrete multitone for asymmetric digital subscriber loops
10/24/2000US6137831 Method and apparatus for reducing receiver imposed distortion
10/24/2000US6137829 System and method for transmitting special marker symbols
10/24/2000US6137826 Dual-mode modulation systems and methods including oversampling of narrow bandwidth signals
10/24/2000CA2180143C Satellite receiver system having doppler frequency shift tracking
10/24/2000CA2162926C Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing
10/23/2000CA2306027A1 Iterative channel estimation and compensation based thereon
10/23/2000CA2305987A1 A method of channel estimation and compensation based thereon
10/19/2000WO2000062499A1 Method and apparatus for determining signal path
10/19/2000WO2000062498A1 Method and receiver for receiving and decoding signals modulated with different modulation methods
10/19/2000WO2000062452A1 Method and apparatus for peak limiting in a modulator
10/19/2000WO2000062436A1 Reduction of peak-to-average power ratio in a mobile telecommunications system
10/19/2000WO2000025471A9 Method for displaying the modulation error of a multiple carrier signal
10/19/2000DE19930192C1 Orthogonal frequency division modulation method
10/19/2000DE19916068A1 Signalling information modulation method for radio communication system
10/18/2000EP1045581A1 Digital broadcast receiving system
10/18/2000EP1045561A2 Frequency correction in multicarrier receivers
10/18/2000EP1045543A2 Diversity reception method and diversity receivers used with OFDM signals
10/18/2000EP1045541A2 Multiresolution transmission and error correction coding with multicarrier signals
10/18/2000EP1045538A1 Multicarrier communication device and multicarrier communication method
10/18/2000EP1045534A1 Method to determine the position of a constant frequency interval in a telecommunication signal
10/18/2000EP1045533A1 Communication device and method for distinguishing between different data burst types in a digital telecommunication system
10/18/2000EP1045531A2 Diversity reception method and diversity receivers
10/18/2000EP1044544A1 Reduction of the crest factor in ofdm signal
10/18/2000EP1044543A1 Modulating a digital signal with narrow spectrum and substantially constant envelope
10/18/2000CN1270724A Method and system for rapid initial signal detection in a wireless communications system
10/18/2000CN1270721A Method of and apparatus for transmitting data in a multiple carrier system
10/18/2000CN1270718A Method of implementing macrodiversity
10/18/2000CN1270716A Apparatus and method for transmitting signals in a communication system
10/18/2000CN1270460A Method for identifying varied data pulse series in digital communication system and communication equipment
10/18/2000CN1057654C Frequency-modulated sub-channel high-speed data transmission receiver
10/17/2000US6134429 Direct digital down conversion of a 10.8 MHz intermediate frequency signal in the personal handy phone system
10/17/2000US6134286 Synchronization techniques and systems for radiocommunication
10/17/2000US6134280 Delayed decision feedback sequence estimator for determining optimal estimation region with small calculation quantity
10/17/2000US6134276 Timing recovery system
10/17/2000US6134275 Method for transmitting data between a terminal and a portable data carrier over a wireless electromagnetic transmission link
10/17/2000US6134274 Method and apparatus for allocating data for transmission via discrete multiple tones
10/17/2000US6134273 Bit loading and rate adaptation on DMT DSL data transmission
10/17/2000US6134268 Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter
10/17/2000US6134230 Method for selecting a link protocol for a transparent data service in a digital communications system
10/17/2000US6133873 Method and apparatus for adaptively processing GPS signals in a GPS receiver
10/17/2000US6133785 False carrier lock receiver and associated methods for detection
10/17/2000US6133783 Phase jitter canceller
10/17/2000CA2015414C Method of and system for power line carrier communications
10/12/2000WO2000060805A2 Method for synchronisation
10/12/2000WO2000060804A1 Timing method for a discrete multi-tone transmission system
10/12/2000WO2000060791A2 Collision handling scheme for discrete multi-tone data communications network
10/12/2000WO2000060787A1 Multiplex transmission device of cdma system and multiplex transmission method of cdma system
10/12/2000WO2000060765A1 Transmitter, receiver, and transmitting/receiving method
10/12/2000WO2000060761A1 Channel estimating device and method, demodulating device and method, and fading frequency determining device and method
10/12/2000WO2000060758A1 Radio device and transmitting/receiving method
10/12/2000WO2000060753A1 Mobile communication terminal
10/12/2000WO2000060741A1 Method and apparatus for reducing oscillator noise by noise-feedforward
10/12/2000WO2000060732A1 Signal processing
10/12/2000CA2333954A1 Channel estimation device and method, demodulation device and method, and fading frequency decision device and method
10/11/2000EP1043875A2 Receiver for discrete multitone modulated signals having window function
10/11/2000EP1043874A2 Detection and removal of clipping in multicarrier receivers
10/11/2000EP1043873A1 Synchronization acquiring circuit
10/11/2000EP1043858A1 Transmitting/receiving device and transmitting/receiving method
10/11/2000EP1043857A1 Ofdm transmitting/receiving device and method
10/11/2000EP1043837A1 Frequency offset correction in a packet transmission system
10/11/2000EP1043679A1 Reader having means for determining the distance between the reader and a transponder
10/11/2000EP1043653A2 Multiple function processor for communication signals
10/11/2000EP1042876A2 Method for frequency error estimation
10/11/2000EP1042870A1 Coding method and apparatus
10/11/2000EP0906656B1 Dsp implementation of a cellular base station receiver
10/11/2000CN1269670A Vertical phase demodulation circuit
10/11/2000CN1269669A Pseudo-lock detection system
10/11/2000CN1057418C Device for correcting phase-error of residual sideband signal
10/11/2000CN1057413C Frequency band separation signal digitizer and method thereof
10/10/2000US6131180 Trellis coded modulation system
10/10/2000US6131023 Cable modem tuner with an up-stream and a reception circuit in the same casing
10/10/2000US6131016 Method and apparatus for enhancing communication reception at a wireless communication terminal
10/10/2000US6131013 Method and apparatus for performing targeted interference suppression
10/10/2000US6130922 Demodulating digital video broadcast signals
10/10/2000US6130920 Method and apparatus for accurate synchronization using symbol decision feedback
10/10/2000US6130918 Method and apparatus for reducing the peak-to-average ratio in a multicarrier communication system
10/10/2000US6130915 Process for transferring digital data via interference-affected radio channels and device for receiving digital data transmitted via interference-affected radio channels
10/10/2000US6130894 Off-line broadband network interface
10/10/2000US6130882 Method and apparatus for configuring a communication system
10/10/2000US6130577 Digital demodulators for phase modulated and amplitude-phase modulated signals
10/10/2000CA2207818C Apparatus and method for demodulating multi-level signal
10/10/2000CA2196844C Frequency sweep circuit
10/10/2000CA2164027C Digital radio receiver
10/05/2000WO2000059175A1 Correction of nonlinearity of i/q modulator
10/05/2000WO2000059174A1 Correction of phase and amplitude imbalance of i/q modulator
10/05/2000WO2000059173A1 Synchronous bpsk decoder
10/05/2000WO2000059172A1 Signal modulation circuit and method for signal modulation
10/05/2000WO2000059171A1 Correction of dc-offset of i/q modulator
10/05/2000WO2000059170A1 Phase modulation technique for pulsed frequency shift keying circuits
10/05/2000WO2000059169A1 Fdma/tdma transceiver employing common signal processing
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