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)
11/2003
11/19/2003CN1457571A Phase modulator and phase modulating method
11/19/2003CN1457555A Calibration of in-phase and quadrature transmit branches of transmitter
11/19/2003CN1457152A 无线通信装置与无线通信方法 The wireless communication device and wireless communication method
11/19/2003CN1128550C Digital TV signal receiver
11/19/2003CN1128530C Digital TV signal receiver circuits
11/18/2003US6650878 Automatic gain control circuit and receiver having the same
11/18/2003US6650718 Timing reproducer and demodulator comprising this
11/18/2003US6650717 Asymmetric pulse amplitude modulation transmission of multi-stream data embedded in a hybrid IBOC channel
11/18/2003US6650715 Apparatus for recovering decision-directed carrier
11/18/2003US6650714 Spatial processing and timing estimation using a training sequence in a radio communications system
11/18/2003US6650712 Low complexity method and apparatus for FSK signal reception
11/18/2003US6650711 Quadrature modulation with reduced phase-error distortion
11/18/2003US6650695 Wireless digital data transmission from a passive transceiver
11/18/2003US6650658 Controlled aliasing to simplify service selection
11/18/2003US6650653 Software-based digital receiver adaptable to multiple multiplexing schemes
11/18/2003US6650649 Extension interface units in a communication system
11/18/2003US6650636 Transmission and reception of TCP/IP data over a wireless communication channel
11/18/2003US6650628 Combining QAM and QPSK to optimize license capacity in cellular, multipoint wireless access systems
11/18/2003US6650617 Reduced complexity FFT window synchronization for an orthogonal frequency division multiplexing system
11/18/2003US6650268 Method and apparatus for a pulse decoding communication system using multiple receivers
11/18/2003US6650178 N-port direct receiver
11/18/2003CA2191437C Method and apparatus for coordinating multi-point-to-point communications in a multi-tone data transmission system
11/13/2003WO2003094520A1 Backward compatible dvb-s standard transmission system
11/13/2003WO2003094463A1 Magnitude and phase imbalance calibration and compensation in quadrature receivers
11/13/2003WO2003094462A1 Method for limiting amplitude of a carrier frequency output signal
11/13/2003WO2003094461A1 High bandwidth data transport system
11/13/2003WO2003094460A2 Mobile station loop-back signal processing
11/13/2003WO2003094399A1 Pattern position measuring device, method, and program, and record medium on which the program is recorded
11/13/2003WO2003094379A1 Method for limiting signal and transmitter
11/13/2003WO2003094372A1 Method for detecting a signal contaminated by additive gaussian noise and a detector using the method
11/13/2003WO2003094368A1 Burst-mode combining of reverse path radio frequency signals
11/13/2003WO2003094359A1 Digital audio broadcasting method and apparatus using complementary pattern-mapped convolutional codes
11/13/2003WO2003073601A3 Method for adjusting a two-level modulator and two-level modulator with an adjusting device
11/13/2003WO2003071682A3 Flexible method and apparatus for encoding and decoding signals using a time division multiple frequency scheme
11/13/2003WO2003065609A3 Pilot interpolation for a gated pilot with compensation for induced phase changes
11/13/2003WO2003055195A3 System and method for rate enhanced shdsl
11/13/2003WO2003026144A3 Multi-carrier frequency-division multiplexing (fdm) architecture for high speed digital service in local networks
11/13/2003WO2002065715A8 Communication interface between an indoor unit and an outdoor unit in a wireless communication system
11/13/2003US20030212946 Digital audio broadcasting method and apparatus using complementary pattern-mapped convolutional codes
11/13/2003US20030211851 Radio communication device and method thereof
11/13/2003US20030210909 Optical communications networks utilizing frequency division multiplexing
11/13/2003US20030210757 Method and apparatus for coherent demodulation in communication system employing a potentially gated pilot signal
11/13/2003US20030210749 Receiver
11/13/2003US20030210740 Asymmetric digital subscriber line modem apparatus and methods therefor
11/13/2003US20030210739 Fast initialization using seamless rate adaptation
11/13/2003US20030210667 Channel estimation in a cellular communication system
11/13/2003US20030210646 Frequency error correction device and OFDM receiver with the device
11/13/2003US20030210645 Estimating frequency offsets using pilot tones in an OFDM system
11/13/2003CA2483610A1 High bandwidth data transport system
11/13/2003CA2482992A1 Digital audio broadcasting method and apparatus using complementary pattern-mapped convolutional codes
11/12/2003EP1361720A1 MCM receiver with burst noise suppression
11/12/2003EP1361719A2 Multicarrier receiver with detection of burst noise
11/12/2003EP1361717A2 Equalisation for multicarrier signals
11/12/2003EP1361716A2 Insertion of pilot symbols
11/12/2003EP1361686A1 Detection of the superimposed signals in a layered modulation digital transmission scheme to use legacy receivers
11/12/2003EP1361667A1 Modulation-demodulation apparatus and wireless communication apparatus
11/12/2003EP1361655A1 Mirror suppression circuit in a quadrature demodulator
11/12/2003EP1360808A2 Physical layer interface for a local communication system
11/12/2003EP1226673A4 Fixed ofdm wireless man utilizing cpe having internal antenna
11/12/2003EP1142172B1 Method and communications assembly for transferring information by using a multi-carrier method
11/12/2003EP1002404B1 Truncated maximum likelihood sequence estimator for wireless local area networks
11/12/2003CN1455996A Peak power suppressing apparatus and peak power suppressing method
11/12/2003CN1455576A Digital subscriber-line modem and relevant method and computer programme product
11/12/2003CN1455573A Application of FSk technique in public telephone terminal of intelligent network
11/12/2003CN1455533A Time synchronous method for multi-carrier CDMA system
11/12/2003CN1127871C Transmitting on the downlink using one or more weight vectors determined to achieve a desired radiation pattern
11/12/2003CN1127834C Baseband signal off-centre conrrecting circuit and method and its frequency shift keying receiving equipment
11/12/2003CN1127820C Arrangement and methods for generating radio frequency signal
11/12/2003CN1127808C Method and apparatus for saving current while performing signal strength measurements in homodyne receiver
11/12/2003CN1127801C Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter
11/11/2003US6647445 Data transmission by an alternating frequency analog signal
11/11/2003US6647252 Adaptive threshold algorithm for real-time wavelet de-noising applications
11/11/2003US6647116 Current sensing circuit and ADSL interface circuit
11/11/2003US6647080 Carrier phase initialization with sub-LSB accuracy
11/11/2003US6647074 Removal of clock related artifacts from an offset QAM generated VSB signal
11/11/2003US6647073 Linearisation and modulation device
11/11/2003US6647071 Method and apparatus for equalization and tracking of coded digital communications signals
11/11/2003US6647066 Method of determining a frequency offset between a set frequency and a desired frequency for synchronization with a multicarrier signal
11/11/2003US6647025 OFDM reception apparatus
11/11/2003US6646980 OFDM demodulator
11/11/2003CA2319325C Vhf/uhf self-tuning planar antenna system
11/11/2003CA2266108C Iterative demapping
11/11/2003CA2206311C Multiple access digital transmitter/receiver and method
11/06/2003WO2003092235A1 Method and apparatus for reducing peak to average power ratio of a multi-carrier signal
11/06/2003WO2003092234A1 Filtering device, for high speed modem in alternate mode, operating as isolator or adapter
11/06/2003WO2003092233A1 Method and device for pulse shaping qpsk signals
11/06/2003WO2003092212A1 An adaptive air interface waveform
11/06/2003WO2003092197A1 Apparatus and method for transmitting and receiving side information of a partial transmit sequence in an ofdm communication system
11/06/2003WO2003092179A1 Digital radio receiver
11/06/2003WO2003052991A3 A method and system of operating a coded ofdm communication system
11/06/2003WO2003047197A3 Rate selection for an ofdm system
11/06/2003WO2002049305A8 Ofdma with adaptive subcarrier-cluster configuration and selective loading
11/06/2003WO2001099362A8 Sliding-window processing for the reception of multicarrier signals
11/06/2003US20030207677 Circuit and method for detecting AC voltage pulses
11/06/2003US20030206603 Systems and methods to provide wideband magnitude and phase imbalance calibration and compensation in quadrature receivers
11/06/2003US20030206602 Multivalued FSK modulation system
11/06/2003US20030206600 QAM Modulator
11/06/2003US20030206580 Activation of multiple xDSL modems with implicit channel probe
11/06/2003US20030206579 Multistage nonlinear echo-canceller for digital communication systems with or without frequency division duplexing
11/06/2003US20030206126 Binarizing circuit, wireless communication device, and binarizing method
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