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)
02/2003
02/13/2003WO2002093779A3 Transmission in multi-channel communication system using selective channel power control
02/13/2003WO2002091640A3 Method for increasing the power emitted during the transmission of digital multi-carrier signals with am emitters
02/13/2003WO2002082756A3 Amplitude and/or phase-modulator according to the principle of envelope elimination and restoration
02/13/2003WO2002023848A3 Power amplification in multicarrier transmitters
02/13/2003WO2002023839A3 Active terminating device with optional line-receiving and line-driving capabilities
02/13/2003US20030032390 Acquisition and tracking in communication system with multicarrier telephony transport
02/13/2003US20030031278 Channel decoding apparatus and method in an orthogonal frequency division multiplexing system
02/13/2003US20030031277 Simplified symbol timing tracking circuit for a CPM modulated signal
02/13/2003US20030031274 Phase demodulator, symbol timing recovery circuit and the method thereof
02/13/2003US20030031273 Quadrature gain and phase imbalance correction in a receiver
02/13/2003US20030031272 Communication device and communication method
02/13/2003US20030031271 Isolator eliminator for a linear transmitter
02/13/2003US20030031269 Semi-stationary quiescent mode transmission
02/13/2003US20030031268 Computational circuits and methods for processing modulated signals having non-constant envelopes
02/13/2003US20030031267 Fractional-N digital modulation with analog IQ interface
02/13/2003US20030031240 Downstream only suspend-type Q-Mode
02/13/2003US20030031233 Apparatus and method for transporting/receiving data in a CDMA mobile communication system
02/13/2003US20030031232 System for code division multi-access communication
02/13/2003US20030031122 Apparatus and method for determining a modulation scheme in a communication system
02/13/2003US20030031121 Ofdm communication device
02/13/2003US20030031120 Ofdm modem system
02/13/2003US20030030873 High-speed adjustable multilevel light modulation
02/13/2003CA2455277A1 Signal decomposition for the control of its dynamic range
02/13/2003CA2455112A1 Appartus for extracting a clock signal and a digital data signal from an amplitude modulated carrier signal in a receiver, wherein the symbol rate either coincides with or is halfof the carrier frequency
02/12/2003EP1283627A2 Multitone transmission with control of peak power
02/12/2003EP1283614A1 Channel estimation in a multicarrier transmit diversity system
02/12/2003EP1283607A1 Receiver, sender, method and burst signal
02/12/2003EP1283602A2 Multipath CDMA receiver for reduced pilot
02/12/2003EP1282951A1 Frame control encoder/decoder for robust ofdm frame transmissions
02/12/2003EP1142243A4 Power-line digital communication system
02/12/2003EP0963643A4 Method and apparatus for analyzing a composite carrier signal
02/12/2003EP0669069B1 Device and method for utilizing zero-padding constellation switching with frame mapping
02/12/2003CN1397120A 通信装置及通信方法 Communication apparatus and communication method
02/12/2003CN1397119A OFDM communication apparatus and OFDM communication method
02/12/2003CN1397108A DC-offset correction circuit having DC control loop and DC blocking circuit
02/12/2003CN1396749A Orthogonal frequency division multiplex receiving system for active estimating symbol timing displacement and its method
02/12/2003CN1396732A Frequency discrimination method and device for automatic frequency controller in diversity mode
02/12/2003CN1396730A Method for realizing frequency synchronization in orthogonal FDM system
02/12/2003CN1396729A Orthogonal frequency division multiplex receiving system for symbol timing synchronization and its method
02/12/2003CN1101630C Receiving device
02/12/2003CN1101622C Wide-area wireles distribution system
02/11/2003US6519328 Variable low frequency offset, differential, OOK, high-speed twisted pair communication using telephone load coils
02/11/2003US6519303 Clock reproduction circuit
02/11/2003US6519300 System and method for automatic frequency correction in a pilot symbol assisted demodulator
02/11/2003US6519299 Methods and apparatus to despread dual codes for CDMA systems
02/11/2003US6519296 Variable-interval pilot symbol aided modulation and demodulation
02/11/2003US6519295 VSB DTV receiver with real-only digital synchrodyne to recover baseband symbol code
02/11/2003US6519294 BS digital broadcasting receiver
02/11/2003US6519292 Transmission method, transmitter and receiver
02/11/2003US6519279 Transceiver circuitry, portable communication device and method for performing radio communication
02/11/2003US6519010 Broadcast transmission system with sampling and correction arrangement for correcting distortion caused by amplifying and signal conditioning components
02/11/2003US6519000 Image pickup apparatus with mode switching between a still picture mode and a moving picture mode
02/11/2003CA2229578C Dynamic allocation of bandwidth for transmission of audio signals and a video signal
02/09/2003CA2392882A1 Receiver, sender, method and burst signal
02/07/2003CA2396639A1 A simulcasting ofdm system having mobile station location identification
02/06/2003WO2003010929A1 Method and system for transmitting data from a first data network into a second data network
02/06/2003WO2003010917A1 Narrow band chaotic frequency modulation using skewed tent maps
02/06/2003WO2003010914A2 Method and apparatus of avoiding zero crossings in quadrature modulation by adding an offset
02/06/2003WO2003010901A1 Method of and apparatus for communication via multiplexed links
02/06/2003WO2002060143A3 Joint reduction of noise power and of the length of the channel impulse response
02/06/2003WO2002058271A3 Frequency domain equalisation with decision feedback
02/06/2003WO2002041651A3 Methods and apparatus for identifying asset location in mobile co mmunication networks
02/06/2003WO2001065703A3 High data-rate powerline network system and method
02/06/2003US20030027610 Secondary automatic gain control loops for direct conversion CDMA receivers
02/06/2003US20030027568 Method and apparatus for maintaining independent, parallel data streams over separate modulation channels of a multi-dimensional modulator
02/06/2003US20030027542 Process for the transfer of data
02/06/2003US20030027538 Receiving apparatus and a receiver system having the receiving apparatus
02/06/2003US20030027536 Signal correction method and receiver
02/06/2003US20030027529 Method of improving efficiency in a satellite communications system
02/06/2003US20030026399 PRBS generator selection in modem communication
02/06/2003US20030026373 Noise-resistive, burst-mode receiving apparatus and a method for recovering a clock signal and data therefrom
02/06/2003US20030026371 Synchronization of a pilot assisted channel estimation orthogonal frequency division multiplexing system
02/06/2003US20030026365 Receiver and method therefor
02/06/2003US20030026361 Null-pilot symbol assisted fast automatic frequency control (AFC) system for coherent demodulation of continuous phase modulation (CPM) signals and method for implementing same
02/06/2003US20030026360 Method and system for timing recovery and delay spread estimation in a communication system
02/06/2003US20030026358 Quadrature demodulator
02/06/2003US20030026357 Cooperative code-enhanced multi-user communications system
02/06/2003US20030026356 Bandwidth-efficient wireless network modem
02/06/2003US20030026352 Method for adapting filter cut-off frequencies for the transmission of discrete multitone symbols
02/06/2003US20030026351 System and method for post filtering peak power reduction in multi-carrier communications systems
02/06/2003US20030026332 Multi-tone transmission
02/06/2003US20030026331 Multi-tone transmission
02/06/2003US20030026295 Method and apparatus for synchronizing an OFDM signal
02/06/2003US20030026282 Splitterless multicarrier modem
02/06/2003US20030026263 Multi-tone transmission
02/06/2003US20030026238 Radio communication system
02/06/2003US20030026201 Sliding-window transform with integrated windowing
02/06/2003US20030025971 Optical communications systems, devices, and methods
02/06/2003CA2454274A1 Method and arrangement for transmission of data from a first data network to a second data network
02/05/2003EP1282279A2 Compensation of frequency offset in quadrature demodulators
02/05/2003EP1282278A1 Digital circuit for the approximate realisation of a GMSK modulation
02/05/2003EP1282258A1 Method and apparatus for synchronising receivers
02/05/2003EP1282257A1 Method and apparatus for detecting data sequences
02/05/2003EP1282254A1 Channel coding and decoding for modulation with large number of states
02/05/2003EP1282245A1 Channel estimation in a multi carrier transmit diversity system
02/05/2003EP1282225A2 Peak limiter and multi-carrier amplification apparatus
02/05/2003EP1281262A1 System and method for peak power reduction in spread spectrum communications systems
02/05/2003EP1036425B1 Vhf/uhf self-tuning planar antenna system
02/05/2003EP0941588B1 Method and device for mixed analog and digital broadcast of a radio programme broadcast by the same transmitter
02/05/2003EP0908024B1 Packet-switched spread-spectrum system
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