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
11/27/2003WO2003098833A2 Apparatus and method of echo-cancellation
11/27/2003WO2003098832A2 Time domain equalization using frequency domain operations
11/27/2003WO2003063515A3 Psk optical signal demodulator
11/27/2003WO2003058881A3 Coexistence of modulation schemes in a wlan
11/27/2003WO2003047118A3 Method and apparatus for determining the log-likelihood ratio with precoding
11/27/2003WO2003043179A3 Transmitter with transmitter chain phase adjustment on the basis of pre-stored phase information
11/27/2003WO2003030362A3 Multiplexer cell and multiplexer circuit arrangement and encoding device for use in a multiplexer circuit arrangement of this type
11/27/2003WO2002063843A3 System and method of signal wave shaping for spectrum control of an ofdm signal
11/27/2003WO2002060146A8 Method of implementing modulation and modulator
11/27/2003US20030220104 Method of timing compensation for OFDM-based wireless communication system coded parameter signaling (CPS) decode operations
11/27/2003US20030220084 Frequency offset estimator
11/27/2003US20030219085 Self-initializing decision feedback equalizer with automatic gain control
11/27/2003US20030219084 Guard interval analysis method and apparatus
11/27/2003US20030219077 Multichannel receiver
11/27/2003US20030219076 DSL receivers for TCM-ISDN environments and methods of operating same
11/27/2003US20030219069 Signal, interference and noise power measurement
11/27/2003US20030219064 Segment-wise channel equalization based data estimation
11/27/2003US20030218973 System and method for data detection in wireless communication systems
11/27/2003US20030218489 Input circuit for an HF-transmitting component
11/26/2003EP1365602A1 Method and apparatus of multi-carrier power control of base station in broad-band digital mobile communication system
11/26/2003EP1365517A2 Input circuit for RF transmitter module
11/26/2003EP1364507A2 Multicarrier transmission system with reduced complexity leakage matrix multiplication
11/26/2003EP1364506A2 Multicarrier transmission system with reduced complexity channel response estimation
11/26/2003EP1364505A2 Reduced complexity intercarrier interference cancellation
11/26/2003EP1364504A1 Maximum likelihood synchronisation for a communications system using a pilot symbol
11/26/2003EP1364503A2 Estimating frequency offset
11/26/2003EP1364479A2 Satellite receiver
11/26/2003EP1364468A2 Calibration of in-phase and quadrature transmit branches of a transmitter
11/26/2003EP1364456A2 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
11/26/2003EP1166447B1 Method and apparatus for reducing oscillator noise by noise-feedforward
11/26/2003EP1060568B1 Apparatus, system, and method for improving the dynamic range of a receiver in the presence of a narrowband interfering signal
11/26/2003EP1048110B1 A post-filtered sigma-delta for controlling a phase locked loop modulator
11/26/2003EP0908015B1 Wireless receiver with offset compensation using flash-adc
11/26/2003EP0806079B1 Transmission and reception of cpm spread-spectrum communications
11/26/2003CN1459178A Direct digital synthesis in QAM demodulator
11/26/2003CN1459177A Method for generation of system-independent digit of mobile communication signals of various mobile radio standards
11/26/2003CN1459164A 分组传输系统和分组传输方法 Packet transmission systems and packet transmission method
11/26/2003CN1459151A Method for system-independent digital evaluation of mobile communication reception signals of various mobile radio standards
11/26/2003CN1459150A 数字波形发生器设备及其方法 Digital waveform generator apparatus and method
11/26/2003CN1458772A Radio communication coding and decoding method using variable length signal to express digital data
11/26/2003CN1129332C Mobile station, base station and communication method
11/26/2003CN1129289C Joint compensation method for decreasing ratio of peak power to average power for multi-carrier signals
11/26/2003CN1129288C Carrier reproducing circuit and method
11/26/2003CN1129287C Radio digital signal receiver and signal processing method
11/26/2003CN1129286C Digital demodulator
11/26/2003CN1129285C Clock reproducing circuit
11/26/2003CN1129284C Signal multiplexer
11/26/2003CN1129239C Device for determining digital single frequency deviation and receiver
11/25/2003US6654593 Combined discrete automatic gain control (AGC) and DC estimation
11/25/2003US6654431 Multicarrier personal access communication system
11/25/2003US6654429 Pilot-aided channel estimation for OFDM in wireless systems
11/25/2003US6654427 Signal notching system for limiting signal peaks
11/25/2003US6654426 Correction of nonlinearity of I/Q modulator
11/25/2003US6654410 Fast initialization using seamless rate adaptation
11/25/2003US6654408 Method and system for multi-carrier multiple access reception in the presence of imperfections
11/25/2003US6654407 Noise shaping technique for spread spectrum communications
11/25/2003US6654378 Transaction control system including portable data terminal and mobile customer service station
11/25/2003US6654340 Differential OFDM using multiple receiver antennas
11/25/2003US6654339 Synchronization symbol structure using OFDM based transmission method
11/25/2003US6653909 Digital signals, radio transmitter circuits and method
11/20/2003WO2003096644A1 Radio frequency signal generator, comprising synchronised frequency- or phase- and amplitude-modulation components
11/20/2003WO2003096590A2 Method and system of channel analysis and carrier selection in ofdm and multi-carrier systems
11/20/2003WO2003096582A1 Reception method and reception device estimating reception quality and communication system using the reception device
11/20/2003WO2003096561A1 Mobile communication apparatus
11/20/2003WO2003096557A1 Radio transmission device and radio transmission method
11/20/2003WO2003096548A2 Method for producing a transmission signal
11/20/2003WO2003096524A2 Mirror suppression circuit in a quadrature demodulator
11/20/2003WO2003041351A3 Frequency tracking using pilot and non-pilot symbols
11/20/2003WO2002084897A3 High-quality power ramping in a communications transmitter
11/20/2003US20030216126 Multiple modulation wireless transmitter
11/20/2003US20030215044 Data-directed frequency-and-phase lock loop
11/20/2003US20030215034 Wireless terminal device
11/20/2003US20030215032 Two-stage non-linear filter for analog signal gain control in an OFDM receiver
11/20/2003US20030215030 RF receiver phase correction circuit using cordic and vector averaging functions and method of operation
11/20/2003US20030215028 Receiver circuit and method of processing a received signal
11/20/2003US20030215027 Quadrature receiver sampling architecture
11/20/2003US20030215026 AM to AM correction system for polar modulator
11/20/2003US20030215025 AM to PM correction system for polar modulator
11/20/2003US20030215024 Modulation apparatus, modulation method, modulated wave receiving apparatus, and modulation system
11/20/2003US20030215022 OFDM detection apparatus and method for networking devices
11/20/2003US20030215021 Adaptive communication
11/20/2003US20030215001 Spread-spectrum transmission system with filtered multi-carrier modulation
11/20/2003US20030215000 Pseudo-random bit mapping for multitone transceivers
11/20/2003US20030214927 Transmitter for multi-carrier transmission and multi-carrier transmitting method
11/20/2003US20030214608 System and method for the demodulation of IFF signals
11/20/2003US20030214350 Data-directed frequency acquisition loop
11/19/2003EP1363438A2 Modulation method and radio communication system
11/19/2003EP1363437A1 COMMUNICATION QUALITY ESTIMATION METHOD, COMMUNICATION QUALITY ESTIMATION APPARATUS, AND COMMUNICATION SYSTEM
11/19/2003EP1363436A2 Synchronization of multicarrier symbols
11/19/2003EP1363435A2 Estimation of offsets carrier and sampling frequency in a multicarrier receiver
11/19/2003EP1363434A2 Allocation of pilot signals for multicarrier transmission
11/19/2003EP1363433A1 Phase detection circuit and receiver
11/19/2003EP1363411A1 Diversity system and diversity method
11/19/2003EP1363408A1 Apparatus and method of echo-cancellation
11/19/2003EP1363391A1 Quadrature receiver with DC offset compensation , and quadrature phase-amplitude imbalance compensation
11/19/2003EP1361963A2 Combined tire pressure monitoring and keyless entry receiver
11/19/2003EP0801866B1 Phase detector in a carrier recovery network for a vestigial sideband signal
11/19/2003CN1457584A Decoder and decoding method
11/19/2003CN1457583A Communication device and transmission mode selecting method
11/19/2003CN1457582A Improved channel equalisation for mobile radio receivers
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