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)
11/2000
11/10/2000CA2308857A1 System and process for producing a filtered signal of a given frequency and radio-relay transmitter with a frequency established by an adjustable frequency oscillator
11/10/2000CA2307907A1 Implementation of orthogonal narrowband channels in a digital demodulator
11/09/2000WO2000067441A1 Method and circuit arrangement for adjusting the sampling rhythm of a phase-modulated signal
11/09/2000WO2000067440A1 Receivers including iterative map detection and related methods
11/09/2000WO2000067419A1 Adsl test system
11/09/2000WO2000067392A1 Method and apparatus for quality evaluation of cable circuit
11/09/2000WO2000067370A1 Digital phase modulator using non-linear amplifiers and a ring oscillator
11/09/2000DE19920362A1 Digitaler AM-Demodulator A digital AM demodulator
11/09/2000CA2336994A1 Digital phase modulator using non-linear amplifiers and a ring oscillator
11/08/2000EP1051006A2 Method and system for carrier recovery of a suppressed carrier modulated signal
11/08/2000EP1051005A2 Separation of original and image spectra of a multicarrier signal, together with a signal structure for facilitating the separation
11/08/2000EP1051004A2 Receiver and method for receiving FSK signals
11/08/2000EP1050988A1 Communication device and method
11/08/2000EP1050983A2 Digital AM demodulator
11/08/2000EP1050963A1 Receiver for digital terrestrial broadcasting
11/08/2000EP1050159A1 Vsb receiver
11/08/2000EP1050143A1 Method for processing a signal consisting of data symbols
11/08/2000EP1050142A2 Radio telephone for spread-spectrum system using nonlinear modulation
11/08/2000EP1050141A2 A method and a circuit for am demodulation
11/08/2000EP1050140A1 Pulse shaping according to modulation scheme
11/08/2000EP1050139A1 Pulse shaping which compensates for component distortion
11/08/2000EP1050127A2 Method and apparatus for synchronizing a data communication system to a periodic digital impairment
11/08/2000EP1050112A1 Circuit for demodulating two-dimensional data symbols transmitted by means of supported data transmission
11/08/2000EP1050109A2 Afc device and method of controlling reception frequency in a dual-mode terminal
11/08/2000EP0784893A4 Hierarchical communication system providing intelligent data, program and processing migration
11/08/2000EP0761043A4 High performance modem using pilote symbols for equalization and frame synchronization
11/08/2000CN1272995A Pilot signal search method
11/08/2000CN1272991A OFDMA signal transmitting apparatus and method
11/08/2000CN1272727A High-speed upstream modem communication
11/07/2000US6144735 Filters for a digital subscriber line system for voice communication over a telephone line
11/07/2000US6144712 Variable rate modulator
11/07/2000US6144711 Spatio-temporal processing for communication
11/07/2000US6144708 Phase-locked loop circuit with equalizer and phase locking method
11/07/2000US6144696 Spread spectrum bit allocation algorithm
11/07/2000US6144695 Method and apparatus for reducing near-end crosstalk (NEXT) in discrete multi-tone modulator/demodulators
11/07/2000US6144253 Digital FSK demodulator
11/07/2000US6144243 Method and circuit arrangement for reducing offset voltage of a signal
11/07/2000CA2121195C Digital signal transmission device for improvement of anti-multipath feature, a method of the same and digital signal transmission waveform
11/02/2000WO2000065799A1 Qam modulator
11/02/2000WO2000065798A1 Method and apparatus for transmitting the sync channel message in a multi-carrier communication system
11/02/2000WO2000065797A1 Method and apparatus for frequency offset correction
11/02/2000WO2000065796A1 Method and system for linear phase unwrapping
11/02/2000WO2000065795A1 Method and device for transmitting data by audio signals
11/02/2000WO2000065794A1 Bs digital broadcasting receiver
11/02/2000WO2000065793A1 Line quality measuring instrument
11/02/2000WO2000065792A1 A windowing function for maintaining orthogonality of channels in the reception of ofdm symbols
11/02/2000WO2000065790A1 Nyquist filter and method
11/02/2000WO2000065789A1 Digital gmsk filter
11/02/2000WO2000065758A1 Base station device and method of suppressing peak current
11/02/2000WO2000065756A1 Ofdm packet communication receiver
11/02/2000WO2000065755A2 Quality control method for digital radio transmissions in the medium and short wave range
11/02/2000WO2000065710A1 Synchronization of ofdm signals with improved windowing
11/02/2000WO2000045138A3 Dsss receiver
11/02/2000EP1049334A1 Signal transmission system
11/02/2000EP1049302A1 Synchronization preamble in an OFDM system
11/02/2000EP1049301A2 Sampling clock correction in a multicarrier receiver
11/02/2000EP1049300A2 PCM modem with pre-equalisation
11/02/2000EP1049286A2 Multiple sampling frame synchronization
11/02/2000EP1049284A2 Multiresolution transmission with multicarrier signals
11/02/2000EP1049283A2 Multiresolution transmission with multicarrier signals
11/02/2000EP1049282A2 Multiresolution modulation with multicarrier signals
11/02/2000EP1049261A2 Direct conversion radio receiver
11/02/2000EP1048176A2 Apparatus and method of linearizing a power amplifier in a mobile radio communication system
11/02/2000EP1048155A2 Apparatus and method for determining the closest coset points in a trellis decoder
11/02/2000EP1048154A1 Method and apparatus for tracking the characteristics of a channel
11/02/2000EP1048129A1 Method and apparatus for crosstalk cancellation
11/02/2000EP1048126A1 A transmitter and a method for transmitting data
11/02/2000EP1048119A1 Orthogonal signal transmitter
11/02/2000EP1048110A1 A POST-FILTERED $g(D)$g(S) FOR CONTROLLING A PHASE LOCKED LOOP M ODULATOR
11/02/2000EP0834228B1 Frequency- and phase-regulator circuit for vsb receivers
11/02/2000DE19933266A1 Radio signal reception device for mobile communications IC
11/02/2000DE19917882A1 Signal identification method for radio communication system
11/01/2000CN1272035A Demodulator circuit and demodulation method of radio receiving equipment
11/01/2000CN1272014A Optimized synchronous prestructure
11/01/2000CN1272006A Method and device for estimating transmission channel characteristics
11/01/2000CN1272005A Iterative information channel estimation and compensation based on channel estimation
11/01/2000CN1272003A Information channel estimation and compensation method based on channel estimation
11/01/2000CN1058115C Method and apparatus for recovering frequency modulated signal
10/2000
10/31/2000US6141393 Method and device for channel estimation, equalization, and interference suppression
10/31/2000US6141389 Digital tuner
10/31/2000US6141387 Digital QAM modulator using post filtering carrier recombination
10/31/2000US6141386 Asymmetric filter combination for a digital transmission system
10/31/2000US6141378 Fractionally-spaced adaptively-equalized self-recovering digital receiver for amplitude-phase modulated signals
10/31/2000US6141317 Apparatus and method for bandwidth management in a multi-point OFDM/DMT digital communications system
10/31/2000US6140869 Device for demodulating a binary phase-shift keyed signal
10/31/2000CA2212265C Is-95 compatible wideband communication scheme
10/31/2000CA2170931C Timing recovery in a network-synchronized modem
10/31/2000CA2167745C Communication arrangement with improved echo and noise suppression in a channel containing quantization
10/26/2000WO2000064116A1 Ofdm demodulator with phase correction of the i-q signals
10/26/2000WO2000063830A2 Data recovery system for radio frequency identification interrogator
10/26/2000WO2000041371A3 Power i-q modulation systems and methods using predistortion circuit
10/26/2000DE19918829A1 Quality control method for digital radio broadcasting transmission by correcting bit error below threshold
10/25/2000EP1047236A1 Synchronisation in a data transmission system with Fast Fourier Transformation
10/25/2000EP1047235A1 Carrier phase estimator device and demodulator
10/25/2000EP1047233A2 Iterative channel estimation and compensation based theron
10/25/2000EP1047232A2 Method of channel estimation
10/25/2000EP1047219A1 Method for balancing the ratio Eb/I in a service multiplexing CDMA system and telecommunication systems using same
10/25/2000EP1047209A1 A method and apparatus for multiuser transmission
10/25/2000EP1047069A2 Data demodulating method and data demodulating apparatus
10/25/2000EP1046232A1 Noise cancellation circuit and quadrature downconverter
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