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)
11/2005
11/01/2005CA2283337C Activation of multiple xdsl modems with channel probe
10/2005
10/27/2005WO2005101810A1 Single wire return device for downstream ip signals
10/27/2005WO2005101781A1 Generating higher order modulation using qpsk modulations
10/27/2005WO2005101780A1 Method and apparatus for detecting a cell in an orthogonal frequency division multiple access system
10/27/2005WO2005101779A1 Communication apparatus and communication method for a digital wavelet multicarrier transmission system
10/27/2005WO2005101778A1 Apparatus for and method of controlling a sampling frequency of a sampling device
10/27/2005WO2005101777A1 Apparatus for and method of controlling a digital demodulator coupled to an equalizer
10/27/2005WO2005101776A2 Single and multiple sinewave modulation and demodulation techniques
10/27/2005WO2005101775A2 Coaxial cable communications systems and apparatus employing single and multiple sinewave modulation and demodulation techniques
10/27/2005WO2005101774A1 Communication apparatus and communication method for a digital wavelet multicarrier transmission system
10/27/2005WO2005101711A1 Reception device
10/27/2005WO2005101700A1 Apparatus and method for controlling transmission power in communication systems using orthogonal frequency division multiple access scheme
10/27/2005WO2005101694A2 Versatile system for dual carrier transformation in orthogonal frequency division multiplexing
10/27/2005WO2005101680A1 Device for exchanging ultra wide band signals
10/27/2005WO2005101671A2 Method and apparatus for dc offset removal
10/27/2005WO2005101656A1 Apparatus for and method of controlling the operation of an equalizer
10/27/2005WO2005101655A1 Advanced digital receiver
10/27/2005WO2005101654A1 Apparatus for and method of controlling a feedforward filter of an equalizer
10/27/2005WO2005101653A1 Apparatus for and method of controlling a feedforward filter of an equalizer
10/27/2005WO2005101652A1 Apparatus for and method of controlling a feedforward filter of an equalizer
10/27/2005WO2005101648A1 Dual conversion receiver with programmable intermediate frequency and channel selection
10/27/2005WO2005099407A2 Apparatus for and method of developing equalized values from samples of a signal received from a channel
10/27/2005WO2005099399A2 Apparatus for and method of controlling sampling frequency and sampling phase of a sampling device
10/27/2005WO2005057857A3 Dsl system estimation and parameter recommendation
10/27/2005WO2005053195A3 Method and device for digital-to-rf conversion
10/27/2005WO2005022758A3 Simplified scrambling scheme for satellite broadcasting systems
10/27/2005US20050239488 Multi-carrier communication method and multi-carrier communication method
10/27/2005US20050239432 Ultra-wideband signal receiver using frequency sub-bands
10/27/2005US20050239428 Dual conversion receiver with programmable intermediate frequency and channel selection
10/27/2005US20050239417 Transceiver circuit and method for providing local oscillator signals in a transceiver circuit
10/27/2005US20050238367 Quadrature amplitude modulation of optical carriers
10/27/2005US20050238123 Method and system for charge sensing with variable gain, offset compensation, and demodulation
10/27/2005US20050238121 System and method for determining a modulation angle of an information bit in a complex modulated signal
10/27/2005US20050238120 Adaptable demodulator
10/27/2005US20050238118 Method for detecting a signal contaminated by additive gaussian noise and a detector using the method
10/27/2005US20050238117 Method and device for pulse shaping qpsk signals
10/27/2005US20050238116 Wideband multi-channel quadrature amplitude modulation of cable television signals
10/27/2005US20050238115 Apparatus and method for digital modulation
10/27/2005US20050238114 Quadrature modulation system
10/27/2005US20050238113 Hybrid communication method and apparatus
10/27/2005US20050238112 Device and method for improving the signal to noise ratio by means of complementary sequences
10/27/2005US20050238111 Spatial processing with steering matrices for pseudo-random transmit steering in a multi-antenna communication system
10/27/2005US20050238110 Apparatus and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing communication system
10/27/2005US20050238109 Communication apparatus and communication method using digital wavelet multi carrier transmission system
10/27/2005US20050238091 Fast initialization using seamless rate adaptation
10/27/2005US20050238089 Communication apparatus and communication method using digital wavelet multi carrier transmission system
10/27/2005US20050238083 Base station identification in orthongonal frequency division multiplexing based spread spectrum multiple access systems
10/27/2005US20050237988 Packet generation systems and methods
10/27/2005US20050237966 Ultra wide band communication systems and methods
10/27/2005US20050237954 Digital subscriber line transmission method, apparatus and system
10/27/2005US20050237923 Multi-bank OFDM high data rate extensions
10/27/2005US20050237922 Virtual side channels for digital wireless communication systems
10/27/2005US20050237921 Low peak to average ratio search algorithm
10/27/2005US20050237918 Communication apparatus
10/27/2005US20050237100 CMOS-based receiver for communications applications
10/27/2005DE4191618B4 Programmierbarer digitaler Frequenz-Phasen-Diskriminator Programmable digital frequency-phase discriminator
10/27/2005DE102005015079A1 Adaptive Entzerrungsvorrichtung und Verfahren Adaptive equalization apparatus and method
10/27/2005DE102005011852A1 Verbindungsmodul für eine Verdrahtung für ein elektromechanisches Hybridgetriebe Connection module for a wiring for an electro-mechanical hybrid transmission
10/27/2005DE102004058239A1 Bildwandler Image converter
10/27/2005DE102004013885A1 Verfahren sowie Modulationssteuereinrichtung zur drahtlosen Datenübertragung Procedures and modulation control device for wireless data transmission
10/27/2005CA2564081A1 Single and multiple sinewave modulation and demodulation techniques
10/27/2005CA2563405A1 Coaxial cable communications systems and apparatus employing single and multiple sinewave modulation and demodulation techniques
10/27/2005CA2562563A1 Method and apparatus for dc offset removal
10/27/2005CA2560785A1 Advanced digital receiver
10/27/2005CA2560737A1 Apparatus for and method of controlling the operation of an equalizer
10/27/2005CA2560736A1 Apparatus for and method of controlling a digital demodulator coupled to an equalizer
10/27/2005CA2560735A1 Apparatus for and method of controlling a feedforward filter of an equalizer
10/27/2005CA2560734A1 Apparatus for and method of controlling a feedforward filter of an equalizer
10/27/2005CA2560733A1 Apparatus for and method of controlling a feedforward filter of an equalizer
10/27/2005CA2560729A1 Apparatus for and method of developing equalized values from samples of a signal received from a channel
10/27/2005CA2560728A1 Apparatus for and method of controlling sampling frequency and sampling phase of a sampling device
10/27/2005CA2560540A1 Apparatus for and method of controlling a sampling frequency of a sampling device
10/26/2005EP1589714A1 System/method for receiving ASK and FSK signals using a single RF receiver
10/26/2005EP1589713A2 Quadrature modulator with compensation of I/Q mismatch
10/26/2005EP1589712A2 Apparatus and method for channel estimation in an orthogonal frequency division multiplexing cellular communication system using multiple transmit antennas
10/26/2005EP1589684A1 Multi-carrier radio communication system, transmission device, and reception device
10/26/2005EP1589683A1 Multi-carrier communication system and reception device thereof
10/26/2005EP1588560A2 Robust mode staggercasting video quality enhancement
10/26/2005EP1588559A2 Robust mode staggercasting with adjustable delay offset
10/26/2005EP1588558A2 Robust mode staggercasting without artifacts
10/26/2005EP1588549A2 Robust mode staggercasting storing content
10/26/2005EP1588548A2 Robust mode staggercasting
10/26/2005EP1588547A2 Robust mode staggercasting reduced resolution video for mobile receiver
10/26/2005EP1588517A1 Method and apparatus for automatic gain control of a multi-carrier signal in a communication receiver
10/26/2005EP1588491A2 Robust mode staggercasting with multiple delays for multi-resolution signals
10/26/2005EP1588490A2 Robust mode staggercasting fast channel change
10/26/2005EP1500241B1 Method for limiting amplitude of a carrier frequency output signal
10/26/2005EP1454150B1 Method and device for graphically representing the i and/or q components of digitally modulated high frequency signals
10/26/2005EP1329043A4 An improved threshold extension block phase estimator for quasi-coherent communications systems
10/26/2005EP1258091A4 METHOD AND APPARATUS FOR ACHIEVING 180o PHASE INVARIANT TRANSMISSION IN A PCM MODEM SYSTEM
10/26/2005EP1214791B1 Method and apparatus for adaptive bit resolution in a digital receiver and a digital transmitter
10/26/2005EP1213846B9 Code division multiple access communication system
10/26/2005EP1206866B1 Method and apparatus for reducing peak to average power ratio in digital broadcasting systems
10/26/2005EP1181797A4 A windowing function for maintaining orthogonality of channels in the reception of ofdm symbols
10/26/2005EP1060601B1 Demodulator having rotation means for frequency offset correction
10/26/2005EP0979550A4 Maximum likelihood detection of mpsk bursts with inserted reference symbols
10/26/2005EP0684708B1 Adaptive equalizer
10/26/2005CN1689296A Device and method for identifying a useful signal in a receiver
10/26/2005CN1689295A Broadband predistortion linearization method and system
10/26/2005CN1689292A Communication receiver with virtual parallel equalizers
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