Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 25 - Baseband systems
Patents for H04L 25 - Baseband systems (55,083)
10/2005
10/11/2005US6954490 Fully integrated ethernet transmitter architecture with interpolating filtering
10/11/2005US6954421 Orthogonal frequency division multiplexing receiver device
10/06/2005WO2005094052A1 High speed multiple loop dsl system
10/06/2005WO2005094028A1 Periodic training signals
10/06/2005WO2005094025A1 Method and communication device for interference cancellation in a cellular tdma communication system
10/06/2005WO2005094024A1 Sequence estimation in presence of an interfering channel
10/06/2005WO2005094023A1 Pilot transmission and channel estimation for miso and mimo system
10/06/2005WO2005067237A3 Filter with signal taps temporally spaced at fractional symbol intervals
10/06/2005WO2004075443A3 Receiving and transmitting signals having multiple modulation types using sequencing interpolator
10/06/2005WO2002082655A3 Apparatus and method for measuring cross-correlation coefficient between signals
10/06/2005US20050220240 Clock synchroniser and clock and data recovery apparatus and method
10/06/2005US20050220239 Asynchronous FIFO apparatus and method for passing data between a first clock domain and a second clock domain of a data processing apparatus
10/06/2005US20050220232 Circuit arrangement and a method to transfer data on a 3-level pulse amplitude modulation (PAM-3) channel
10/06/2005US20050220231 Method for equalising and demodulating a data signal which is transmitted via a time-variant channel
10/06/2005US20050220230 Carrier detecting method and carrier detecting circuit
10/06/2005US20050220227 Method and apparatus to detect modulation scheme
10/06/2005US20050220220 Slicing algorithm for multi-level modulation equalizing schemes
10/06/2005US20050220213 Method and apparatus to perform modulation using integer timing relationships between intra symbol modulation components
10/06/2005US20050220203 System & method for spreading on fading channels
10/06/2005US20050220187 Demodulator for pulse-position modulated signals, demodulation method and signal receiver equipped with same
10/06/2005US20050220185 High-speed adaptive interconnect architecture with nonlinear error functions
10/06/2005US20050220183 Apparatus and method for improving quality of received signal
10/06/2005US20050220182 Phase comparison circuit and clock recovery circuit
10/06/2005US20050220180 High speed access system over copper cable plant
10/06/2005US20050220172 Methods and apparatus for generating and processing wideband signals having reduced discrete power spectral density components
10/06/2005US20050220066 Receiver with adaptive detection threshold for tdma communications
10/06/2005US20050220056 Channel quality estimation method and channel quality estimation apparatus
10/06/2005US20050219564 Image forming device, pattern formation method and storage medium storing its program
10/06/2005US20050219110 Circuit arrangement
10/06/2005US20050219083 Architecture for bidirectional serializers and deserializer
10/06/2005US20050219074 Balanced disparity channel code for dc control
10/06/2005US20050219072 Data transmission system and cable
10/06/2005US20050219071 Apparatus and method for decoding
10/06/2005US20050219006 Differential transmission circuit and common mode choke coil
10/06/2005US20050218973 Bandwidth adaptation rule for adaptive noise filter for inverse filtering with improved disturbance rejection bandwidth and speed
10/06/2005US20050218941 Driver circuit and system including driver circuit
10/06/2005US20050218935 Data output circuit with improved overvoltage/surge protection
10/06/2005US20050218934 Output drivers having adjustable swing widths during test mode operation
10/06/2005US20050218927 Bus termination scheme
10/06/2005US20050218294 Image sensor
10/06/2005DE10322943B4 Hardware-Vorrichtung zur Aufbereitung von Pilotsymbolen für eine Kanalschätzung mittels adaptiver Tiefpassfilterung Hardware Device for conditioning pilot symbols for a channel estimation by means of adaptive low-pass filtering
10/06/2005CA2561009A1 High speed multiple loop dsl system
10/06/2005CA2558557A1 Pilot transmission and channel estimation for miso and mimo systems
10/05/2005EP1583307A2 Discrimination phase margin monitor circuit, transmitting/receiving device and communication system
10/05/2005EP1583306A2 Multicarrier receiver with estimation of channel time variance
10/05/2005EP1583305A2 Differential transmission circuit and common mode choke coil
10/05/2005EP1583277A1 MIMO-OFDM backward-compatible transmission system
10/05/2005EP1583271A2 System and method for spreading on fading channels
10/05/2005EP1582042A2 Pilot transmission schemes for wireless multi-carrier communication systems
10/05/2005EP1582041A1 Receiver with iterative channel estimation using a return loop (turbo estimation)
10/05/2005EP1582040A1 Device for a two-wire line terminal
10/05/2005EP1582039A1 Isolation interface with capacitive barrier and method for transmitting a signal by means of such isolation interface
10/05/2005EP1582032A2 Mimo wlan system
10/05/2005EP1582010A1 Apparatus enabled for optimizing spectral efficiency of a wireless link
10/05/2005EP1582001A1 Device for data exchange between a transmitter and a receiver
10/05/2005EP1516470B1 Method for equalising and demodulating a data signal which is transmitted via a time-variant channel
10/05/2005EP1360783A4 Multi-user detection using a finite-impulse-response matrix filter
10/05/2005CN2731842Y User's appliances of transmit processing for using receiver functions
10/05/2005CN1679293A Method and transmission device for the transmission of data in a multi-carrier system
10/05/2005CN1679289A Frequency-domain equalizing of single carrier signal
10/05/2005CN1679288A Training using overhead data in a wireless communications network
10/05/2005CN1679230A Receivers for controlled frequency signals
10/05/2005CN1679010A High speed differential pre-driver using common mode pre-charge
10/05/2005CN1678012A Image sensor
10/05/2005CN1677966A Carrier detecting method and carrier detecting circuit
10/05/2005CN1677916A System and method of phase-locking a transmit clock signal phase with a receive clock signal phase
10/05/2005CN1677890A Data rate regulating device and system thereof
10/05/2005CN1677888A Differential transmission circuit and common mode choke coil
10/05/2005CN1677859A Driver circuit and system including driver circuit
10/05/2005CN1677511A Slice level control circuit
10/05/2005CN1222144C Channel encoding apparatus and method in orthogonal frequency division multiplexing system
10/05/2005CN1222141C Effective bandwidth modulation in communication system
10/05/2005CN1222119C Compatible VSB/QAM multipurpose channel balancer
10/05/2005CN1222112C Apparatus and method for detecting baud in general asynchronous receiving-transmitting device
10/04/2005US6952561 Enhanced metric for bit detection on fading channels with unknown statistics
10/04/2005US6952461 Sampling frequency conversion apparatus
10/04/2005US6952445 Symbol constellations having second-order statistics with cyclostationary phase
10/04/2005US6952444 Blind DFE and phase correction
10/04/2005US6952443 Method and apparatus for determining rate of data transmitted at variable rates
10/04/2005US6952441 Method to determine a channel characteristic, and discrete wavelet transmitter and receiver to perform the method
10/04/2005US6952394 Method for transmitting and receiving orthogonal frequency division multiplexing signal and apparatus therefor
10/04/2005US6952112 Output buffer circuit with control circuit for modifying supply voltage and transistor size
10/04/2005CA2318569C Impedance modulation signalling
09/2005
09/29/2005WO2005091583A1 Channel equalization
09/29/2005WO2005091582A1 System and method for automatically calibrating two-tap and multi-tap equalization for a communications link
09/29/2005WO2005091544A1 Bit clock with embedded word clock boundary
09/29/2005WO2005091543A1 Architecture for bidirectional serializers and deserializer
09/29/2005WO2005091521A1 Balanced transmission system
09/29/2005WO2005091517A1 Method and system for channel estimation, related receiver and computer program product
09/29/2005WO2005091514A1 Ac coupling bandwidth switch
09/29/2005WO2005089407A2 Drift tracking feedback for communication channels
09/29/2005US20050216542 Transform domain adaptive filter, equalizer and wireless communication device using the same, and decision feedback equalization method
09/29/2005US20050215218 Impairment correlation estimation in a spread spectrum system
09/29/2005US20050215202 System and method for antenna diversity using equal power joint maximal ratio combining
09/29/2005US20050213977 Split-band optical transmission system and optical transmission method used therein
09/29/2005US20050213966 Transmission system
09/29/2005US20050213690 Reduced size and power demapper for viterbi decoding
09/29/2005US20050213689 Demodulator circuit, radio communication system and communication semiconductor integrated circuit
09/29/2005US20050213687 Receiving apparatus
09/29/2005US20050213684 Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media
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