Patents for H04L 27 - Modulated-carrier systems (89,721)
01/2008
01/08/2008US7317766 Apparatus and method for demodulating signal
01/08/2008US7317765 Signal observation system
01/08/2008US7317763 Pulse generator, pulse generating method, communicating apparatus, and communicating method
01/08/2008US7317761 Multi-carrier communication system and receiver thereof
01/08/2008US7317760 System and method for finger and path management in receivers
01/08/2008US7317757 Transmit amplitude independent adaptive equalizer
01/08/2008US7317750 Orthogonal superposition coding for direct-sequence communications
01/08/2008US7317747 Transmitter and receiver
01/08/2008US7317680 Channel mapping for OFDM
01/08/2008US7317408 Digital modulation apparatus and digital modulation method
01/08/2008CA2445332C Activation of multiple xdsl modems with implicit channel probe
01/08/2008CA2361032C Clock reproduction circuit
01/08/2008CA2351492C Demodulator
01/03/2008WO2008003087A2 Method and apparatus for selection mechanism between ofdm-mimo and lfdm-simo
01/03/2008WO2008002446A2 Apparatus and methods for implementing hierarchical modulation and demodulation for geran evolution
01/03/2008WO2008002060A1 Method for estimating transmission delay and receiver using the same
01/03/2008WO2008001977A1 Transmission method and apparatus for allocating subchannel and forming stationary beam to maximize transmission efficiency in orthogonal frequency division multiplexing /multiple access based wireless communication system
01/03/2008WO2008001456A1 Multi-value modulation signal reception method and multi-value modulation signal reception device
01/03/2008WO2008001446A1 Transmission device, reception device, transmission method, and reception method
01/03/2008WO2008001293A2 Design of preamble structure for block transmission signals and receiver therefor
01/03/2008WO2008001269A2 Phase-to- frequency conversion for polar transmitters
01/03/2008WO2008000880A1 Method and system for broadband digital transmission via high and medium voltage networks
01/03/2008WO2008000401A1 Optical receiver for receiving a signal m-valued star-shaped quadrature amplitude modulation with differential phase coding and application of same
01/03/2008WO2008000180A1 Method and system for harmonizing multimedia broadcast/multicast service resource in neighbor cells
01/03/2008WO2008000129A1 A method and device for providing test routes and a routing test system
01/03/2008WO2007126793A3 Random access structure for wireless networks
01/03/2008WO2007126385A3 I/q imbalance compensation using scheduling
01/03/2008WO2007114963A3 Methods and apparatus for noise estimation in a communication system
01/03/2008WO2007095551A3 Fec streaming with aggregation of concurrent streams for fec computation
01/03/2008WO2007061799A3 Phase lock loop rf modulator system
01/03/2008WO2005036919A3 Optimizing performance of a digital subscriber line
01/03/2008US20080002798 Method and System for Controlling a Receiver In a Digital Communication System
01/03/2008US20080002792 Early Energy Measurement
01/03/2008US20080002789 System and method for anticipatory receiver switching based on signal quality estimation
01/03/2008US20080002788 Local oscillator incorporating phase command exception handling utilizing a quadrature switch
01/03/2008US20080002784 Systems and methods for designing a high-precision narrowband digital filter for use in a communications system with high spectral efficiency
01/03/2008US20080002783 Method and apparatus for transmitting and receiving data in a multi-channel digital broadcasting system
01/03/2008US20080002782 System and method of wireless communication of uncompressed video having a fast fourier transform-based channel interleaver
01/03/2008US20080002781 Dynamic mimo resource allocation during a single communication
01/03/2008US20080002780 Apparatus for transmitting and receiving data to provide high-speed data communication and method thereof
01/03/2008US20080002655 Method and system for maximizing data throughput rate in a power line communications system by modifying payload symbol length
01/03/2008US20080002568 Adaptive time diversity and spatial diversity for OFDM
01/03/2008US20080001779 Frequency Shift Compensation, Such as for Use In a Wireless Utility Meter Reading Environment
01/03/2008US20080001731 Multi-frequency alarm system receiver with interference detection
01/03/2008DE102006030915A1 Optischer Empfänger für den Empfang von M-wertiger sternförmiger Quadratur-Amplitudenmodulation mit differenzieller Phasenkodierung und Anwendung davon Optical receiver for the reception of M-valued stellate quadrature amplitude modulation with differential phase coding and application thereof
01/03/2008CA2656184A1 Improved packet efficiency for block transmission signals methods and systems
01/03/2008CA2653694A1 Method and apparatus for selection mechanism between ofdm-mimo and lfdm-simo
01/02/2008EP1873989A1 Radio transmission apparatus and method of inserting guard interval
01/02/2008EP1873926A2 Carrier state judging device and transmitting device
01/02/2008EP1872551A1 Time domain windowing and inter-carrier interference cancellation
01/02/2008EP1872550A1 Trend influenced symbol time tracking for an ofdm communication system
01/02/2008EP1872549A1 Symbol time tracking for an ofdm communication system
01/02/2008EP1872548A1 Method, apparatus, and system for transmitting and receiving data in a digital broadcasting system using a single frequency network
01/02/2008EP1872547A1 Detection of signal modulation format type
01/02/2008EP1872546A1 Method of determining the location of the fft window and the delay spread for the platinum broadcast channel estimator
01/02/2008EP1872501A2 Method to minimize degradation a d-mpsk hierarchical modulation system
01/02/2008EP1872483A2 System and method for communicating data using constant amplitude equalized waveform
01/02/2008EP1872480A2 Hybrid orthogonal frequency division multiple access system and method
01/02/2008EP1745627A4 Transmitting and receiving apparatuses for reducing a peak-to-average power ratio and an adaptive peak-to-average power ratio controlling method thereof
01/02/2008EP1706975B1 Peak reduction in ofdm using clipping and modified constellations
01/02/2008EP1676407A4 System and method for reducing peak-to-average power ratio for multi-carrier communication systems
01/02/2008EP1430676B1 Arrangement for phase modulation control in rf signal generation
01/02/2008EP1413108B1 Method for avoiding interference radiation of am transmitters used in digital transmission
01/02/2008EP1338094B1 System and method for embedding a sub-channel in a block coded data stream
01/02/2008EP0940957B1 AFC circuit, carrier reproducing circuit, and receiver
01/02/2008CN101099383A Display device with speaker grill
01/02/2008CN101099364A Quadrature mismatch compensation
01/02/2008CN101099363A System and method for providing services using a single frequency in a wireless communication system
01/02/2008CN101099362A Method and apparatus for differentially orthogonal modulation by using repetition time period of chirp signal
01/02/2008CN101099361A Method of obtaining time synchronization in OFDM mobile communication system
01/02/2008CN101099297A Periodic calibration for communication channels by drift tracking
01/02/2008CN101099296A DC offset compensation method and device
01/02/2008CN101098555A Multi-mode self-adaptive direct-sequence communications system and method therefor
01/02/2008CN101098418A Equalizer structure and method for error reverse rotation in digital television receiver
01/02/2008CN101098328A Base band and RF system synchronization and time delay compensation process
01/02/2008CN101098327A Radio transmission apparatus and method of inserting guard interval
01/02/2008CN101098326A Self-adaption resource allocation method in orthogonal frequency division multiplexing multi-address access system
01/02/2008CN101098323A GMC system based transmission device and corresponding frequency domain equalization method
01/02/2008CN101098294A Carrier distribution method and apparatus for high speed downlink packet access technology
01/02/2008CN101098277A Ultra-wideband wireless transmission multifunctional system
01/02/2008CN101098250A State synchronizing apparatus and method
01/02/2008CN101098249A State synchronous system and method
01/02/2008CN101098222A Wireless communication system, wireless communication apparatus, and method of exchanging cryptography key between wireless communication apparatuses
01/02/2008CN101098215A Method and apparatus for computing soft decision input metrics to a turbo decoder
01/02/2008CN101098181A Method for controlling time-delay stability of time service type satellite receiver
01/02/2008CN101098179A Method for forming broadband frequency domain digital beam
01/02/2008CN101098177A Data transmission method for wireless communication system
01/02/2008CN101098151A Method for receiving broadcasting signal
01/02/2008CN101098142A Frequency synthesizer of multi-sideband OFDM ultra-broadband system radio frequency transceiver
01/02/2008CN100359960C Method for realizing infomration channel estimation in orthogonal frequency division multiplexing system
01/02/2008CN100359959C Method for implementing channel estimation in OFDMA system
01/02/2008CN100359896C Transmission apparatus and transmission method
01/02/2008CN100359895C Method for implementing full digital wireless communication system using fast Fourier transform
01/02/2008CN100359894C Receiving apparatus and integrated circuit for receiving
01/02/2008CN100359843C Symbol timing search algorithm
01/02/2008CN100359833C Method and arrangement for providing optimal bit protection against transmission errors
01/02/2008CN100359816C Ultra-wideband signal receiver using frequency sub-bands
01/02/2008CN100359815C Data message bit synchronization and local time correction methods and architectures
01/02/2008CN100359810C Radio receiver and radio signal processing method
01/01/2008USRE39983 Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size