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)
03/2005
03/16/2005CN1193608C Pulse code modulation dc centering vestigial sideband converter
03/16/2005CN1193563C Multicarrier receiver with channel estimator
03/16/2005CN1193562C Receiving device for angle-modulated signals
03/16/2005CN1193561C Digital residual sideband transmission system
03/16/2005CN1193558C Method and apparaus of providing adaptive equalization using sign permutation filtering
03/16/2005CN1193557C Method and receiver for estimating data bit rates
03/16/2005CN1193524C Demodulation device for subcarrier frequency signals
03/16/2005CN1193516C Method for synchronous with a receiver and said receiver
03/16/2005CN1193507C Improved ADSL compatible discrete multiple audio frequency device
03/15/2005US6868263 Digital automatic gain control
03/15/2005US6868131 Demodulation apparatus, broadcasting system and broadcast receiving apparatus
03/15/2005US6868130 Transmission mode detector for digital receiver
03/15/2005US6868129 Demodulator for a radio receiver and method of operation
03/15/2005US6868128 Method and apparatus for calibrating DC-offsets in a direct conversion receiver
03/15/2005US6868126 Modulating a digital signal with narrow spectrum and substantially constant envelope
03/15/2005US6868118 Discrete multi-tone processor in asymmetric digital subscriber line modem
03/15/2005US6868117 Splitter and microfilter dongle for a single RJ11 DSL/analog combo modem
03/15/2005US6868111 Methods and systems for identifying transmitted codewords after loss of synchronization in spread spectrum communication systems
03/15/2005US6868056 Apparatus and method for OFDM communication
03/15/2005US6867744 Tunable horn antenna
03/15/2005US6867719 Digitizer module, a waveform generating module, a converting method, a waveform generating method and a recording medium for recording a program thereof
03/15/2005CA2331912C Method and apparatus for performing analog mode operations when receiving data and signaling tones in a wireless tdma system
03/10/2005WO2005022858A1 Method and system for transmission of information data over a communication line using filtered multi-tone modulation (fmt)
03/10/2005WO2005022857A1 Tsm type radio communication method, radio communication system, radio reception device, and base station device
03/10/2005WO2005022856A1 Method and system for adaptable receiver parameters
03/10/2005WO2005022855A1 A clock signal distribution network and method
03/10/2005WO2005022817A1 Frequency-independent spatial processing for wideband miso and mimo systems
03/10/2005WO2005022815A1 Ofdm channel estimation and tracking for multiple transmit antenna
03/10/2005WO2005022811A2 Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system
03/10/2005WO2005022810A2 Subcarrier and bit allocation for real time services in multiuser orthogonal frequency division multiplex (ofdm) systems
03/10/2005WO2005022799A1 Transmission device, transmission method, and storage medium
03/10/2005WO2005022794A2 Combined inverse fast fourier transform and guard interval processing for efficient implementation of ofdm based systems
03/10/2005WO2005022792A2 Method of constructing wireless network for orthogonal frequency division multiplex and terminal employing ofdma method
03/10/2005WO2005022765A1 Method and apparatus for transmitting a frame synchronisation sequence and band extension information for a uwb multi-band cofdm wireless network
03/10/2005WO2005022758A2 Simplified scrambling scheme for satellite broadcasting systems
03/10/2005WO2005022751A1 Adaptive lock position circuit
03/10/2005WO2005022750A1 Precision adaptive equalizer
03/10/2005WO2005022743A2 Xdls system with improved impedance circuitry
03/10/2005WO2005022681A2 Multicarrier mimo transmission
03/10/2005WO2005022561A1 Method for polling in digital radio communication system, and method searching vehicles
03/10/2005WO2005022186A1 Modulation signals for a satellite navigation system
03/10/2005US20050055551 Interactive protocol for remote management of access control to scrambled data
03/10/2005US20050055546 Data encryption on the physical layer of a data transmission system
03/10/2005US20050054319 Wireless communication system, and demodulation method and data rate control method therefor
03/10/2005US20050054302 Adaptive modulation/demodulation method and radio communications systems
03/10/2005US20050053229 Common mode noise cancellation
03/10/2005US20050053208 Process, arrangement, devices for seizure of a shared telephone line
03/10/2005US20050053173 Pipelined turbo multiuser detection
03/10/2005US20050053170 Frequency selective transmit signal weighting for multiple antenna communication systems
03/10/2005US20050053169 Phase offset spatial multiplexing
03/10/2005US20050053167 Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals
03/10/2005US20050053165 Ultra-wideband communication apparatus and methods
03/10/2005US20050053164 System and method for RF signal combining and adaptive bit loading for data rate maximization in multi-antenna communication systems
03/10/2005US20050053124 System and method for implementing a delta-sigma modulator integrity supervisor
03/10/2005US20050053097 Multi-channel communication system for multiple input, multiple output processing of an encoded signal
03/10/2005US20050053076 Method to improve the resolution of time measurements and alignment in packet networks by time modulation
03/10/2005US20050053038 Radio communication apparatus
03/10/2005US20050052990 Orthogonal frequency division multiplexing error vector magnitude calibration based on separate multi-tone measurement
03/10/2005US20050052989 Feedback-type channel estimation method and a device based on a PN sequence and a pilot frequency in an OFDM system
03/10/2005US20050052988 Decision feedback transceiver for multichannel communication system
03/10/2005US20050052571 System and method for sending low rate data on a packet basis in an 8-VSB standard data packet stream
03/10/2005US20050052309 [automatic threshold voltage control circuit and signal converting circuit and method thereof]
03/10/2005US20050052292 Signal processing approach for channel coding based on inter-symbol-interference insertion
03/10/2005US20050052250 Direct frequency modulation apparatus which modulates frequency by applying data-dependent voltage to control terminal of voltage-controlled oscillator without mediacy of PLL, and communication system
03/10/2005US20050052227 Demodulation arrangement for a radio signal
03/10/2005DE10197072T5 Phasenfehlererfassung und Korrektur für Symmetrische Signale Phase error detection and correction for Balanced signals
03/10/2005CA2537809A1 Modulation signals for a satellite navigation system
03/10/2005CA2537534A1 Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system
03/10/2005CA2537267A1 Synchronization in a broadcast ofdm system using time division multiplexed pilots
03/10/2005CA2536817A1 Subcarrier and bit allocation for real time services in multiuser orthogonal frequency division multiplex (ofdm) systems
03/09/2005EP1513310A1 Method and device for correcting the carrier frequency offset of a single carrier quadrature continuous modulated signal
03/09/2005EP1513309A1 Process for pilot-aided carrier phase synchronisation
03/09/2005EP1513308A1 Process for pilot-aided carrier phase synchronization
03/09/2005EP1513282A2 Radio communication apparatus with adaptive modulation and coding
03/09/2005EP1513279A1 Data encryption on the physical layer of a data transmission system
03/09/2005EP1513272A1 Base station apparatus and method for controlling transmission assignment
03/09/2005EP1513259A2 Method and apparatus for encoding short block length low density parity check (LPDC) codes for broadband satellite applications
03/09/2005EP1513258A2 Method and system for encoding short block length low density parity check (LDPC) codes
03/09/2005EP1512258A1 Apparatus and method for estimating a channel in a multiple input transmission system
03/09/2005EP1512118A1 Passive data carrier with signal evaluation means for evaluating information of a self-clocking signal
03/09/2005EP1354398B1 Quadrature modulator and demodulator
03/09/2005EP1055283B1 Phase modulating transmitter
03/09/2005EP0819343B1 A method and a circuit of self calibrating and testing qpsk transceivers
03/09/2005CN1593046A Partial response signaling for orthogonal frequency division multiplexing
03/09/2005CN1593045A Modulation device, demodulation device, modulation/demodulation system, modulation method, demodulation method, modulation program and computer-readable recording medium containing the modulation prog
03/09/2005CN1593032A Communication system, receiver apparatus and communicating method
03/09/2005CN1593018A Digital communication method and system
03/09/2005CN1593012A Bit labeling for amplitude phase shift constellation used with low density parity check (LDPC) codes
03/09/2005CN1593006A Method and apparatus for generatng pulses from analog waveforms
03/09/2005CN1593004A Alternate timing signal for a vestigial sideband modulator
03/09/2005CN1592303A Methods and systems for application instance level workload distribution affinities
03/09/2005CN1592290A Communication method, apparatus and system
03/09/2005CN1592289A Method for repeating playback of moving picture data based on said search information, and reproduction apparatus using
03/09/2005CN1592288A Automatic frequency control device and mehtod of QPSK modulation system
03/09/2005CN1592287A FSK signal demodulating circuit
03/09/2005CN1592284A Data receiver and data transmission system
03/09/2005CN1592180A Multiplex communication system and method of signal process
03/09/2005CN1592175A Method for producing long code mask for cluster service
03/09/2005CN1592164A Ultra-short wave wideband data communication system
03/09/2005CN1592161A M-ary spread spectrum communication method
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