Patents for H04L 27 - Modulated-carrier systems (89,721)
12/2001
12/20/2001US20010053710 Remote wireless unit having reduced power operating mode for a discrete multitone spread spectrum communications system
12/20/2001US20010053680 Automatic gain control circuit for controlling two AGC amplifiers
12/20/2001US20010053192 Portable radio system and portable radio equipment to be used in the same and frequency error prediction method used therefor
12/20/2001US20010053181 Decision feedback equalizer
12/20/2001US20010053180 Offset carrier frequency correction in a two-way broadband wireless access system
12/20/2001US20010053175 Ultra-wideband communications system
12/20/2001US20010053143 MIMO OFDM system
12/20/2001US20010053124 Orthogonal frequency division multiplex modem circuit
12/20/2001DE10027869A1 Transceiver circuit for e.g. cordless telephones, has control logic which monitors momentary operating parameters, and outputs control signals to the corresponding electrical components
12/20/2001DE10027301A1 Method for multi-carrier data transmission with broadband efficiency reserves individual carrier frequencies directly in an active band.
12/20/2001CA2414189A1 Method and apparatus for reduction of interference in fm in-band on-channel digital audio broadcasting receivers
12/19/2001EP1164763A2 Predistortion in a 12/4 star QAM modulator
12/19/2001EP1164762A1 Broadband modulation method
12/19/2001EP1164761A2 DPSK system with varible data rates
12/19/2001EP1164760A1 Software base digital receiver adaptable to various multiplexing systems
12/19/2001EP1164759A2 Image rejection in quadrature demodulators
12/19/2001EP1164758A2 Cancellation of interference in DSL systems which have multiple inputs and multiple outputs
12/19/2001EP1164740A2 Arrangement for multicarrier modulation and multiplexing
12/19/2001EP1164708A2 Long range two way low power communication device
12/19/2001EP1164694A2 Microwave amplifier
12/19/2001EP1164692A2 Receiver architecture with low intermediate frequency and polyphase filters
12/19/2001EP1163771A1 Synchronous bpsk decoder
12/19/2001EP1163770A1 Digital wireless phone/modem jack capable of communications over the power lines using differential binary phase shift keying (dbpsk)
12/19/2001EP1163728A1 Radio transmitters
12/19/2001EP0883951A4 Receiver with filter offset correction
12/19/2001EP0838111B1 Carrier recovery for digitally phase modulated signals, using a known sequence
12/19/2001CN1327671A System and method for high speed data transmission
12/19/2001CN1327658A Communication method and communication device
12/19/2001CN1327635A Communication device and communication method
12/19/2001CN1327330A Timed regenerator, demodulator using timed regenerator and time regeneration method
12/19/2001CN1327318A Method and equipment for reducing frequency shifting in radio frequency receiver
12/19/2001CN1076559C Method for controlling determination direction calculation
12/19/2001CN1076545C A digital radio system, a digital radio device and quadrature demodulator
12/18/2001US6332007 Automatic frequency control in FSK receiver using voltage window deviation
12/18/2001US6332004 Analog discrete-time filtering for unshielded twisted pair data communication
12/18/2001US6331996 Channel synchronization and impulse sounding in the presence of frequency offset
12/18/2001US6331974 Chaotic digital code-division multiple access (CDMA) communication systems
12/15/2001CA2350413A1 Variable rate dpsk system architecture
12/13/2001WO2001095582A1 Multi-carrier data transmission method in which the individual carrier frequencies are directly occupied in the useful band
12/13/2001WO2001095581A1 Frequency tracking device and method for a receiver of multi-carrier communication system
12/13/2001WO2001095580A2 Mitigation of radio frequency interference in multicarrier transmission
12/13/2001WO2001095579A2 Packet configuration for interoperability between 802.11a and 802.11b standards
12/13/2001WO2001095578A2 Method for verifying the availability of a signal component and device for carrying out said method
12/13/2001WO2001095515A1 A framing method and the synchronous wireless system therewith
12/13/2001WO2001095508A2 Apparatus and method for pulse position modulation in an impulse radio communications system
12/13/2001WO2001095478A2 Method and apparatus for demodulating coherent and non-coherent modulated signals
12/13/2001WO2001095477A2 Quadrature modulation with reduced phase-error distortion
12/13/2001WO2001045253A3 Circuit arrangement and a method for the offset compensation of a signal
12/13/2001WO2001031871A3 Automatic adaptation of data rate to the processing power in digital multimode transceivers
12/13/2001US20010051507 Direct conversion receiver and transceiver
12/13/2001US20010051504 Activation method of communications apparatus with a non-linear distortion compensation device
12/13/2001US20010050964 Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver
12/13/2001US20010050962 Transmitting circuit apparatus
12/13/2001US20010050960 Multi-carrier communication system with sample rate pilot carrier and time division duplexing frame rate pilot carrier
12/13/2001US20010050951 Circuit and method for signal phase control in a radio transceiver
12/13/2001US20010050947 Delay compensation
12/13/2001DE10027389A1 Synchronization method e.g. for signal receiver of global system for mobile (GSM) communication, involves comparing AM/FM demodulated signal with respective reference signals to detect time offset between them
12/13/2001DE10027115A1 OFDM radio access technology for HIPERLAN has relay stations increases reliability and cell size
12/13/2001DE10026930A1 Increasing efficiency of power line communication (PLC) systems with allocated frequency band divided into individual channels
12/13/2001DE10026325A1 Verfahren zur Synchronisation von OFDM-Symbolen bei Rundfunkübertragungen Method for synchronization of OFDM symbols for broadcast transmissions
12/13/2001DE10025581A1 Vorrichtung und Verfahren zur Überprüfung, ob ein Signal mit einer vorbestimmten Frequenz empfangen wird Apparatus and method for checking whether a signal is received at a predetermined frequency
12/12/2001EP1162803A1 Frequency tracking device and method for a receiver of a multi-carrier communication system
12/12/2001EP1162802A1 Equaliser using a transformed channel.
12/12/2001EP1162777A1 Multi-carrier comunication system with sample rate pilot carrier and time division duplexing frame rate pilot carrier
12/12/2001EP1162730A2 Direct conversion receiver and transceiver
12/12/2001EP1162729A2 Circuit and method for signal phase control in a radio transceiver
12/12/2001EP1161803A1 Method of, and apparatus for, the transmission of a plurality of signals
12/12/2001EP1111880A9 Method and apparatus for detecting dual tone alerting signal in telephone systems
12/12/2001EP1072135B1 Frame structure and frame synchronisation for multicarrier systems
12/12/2001EP1038257B1 System for the transmission of data from a data carrier to a station by means of at least one other auxiliary carrier signal
12/12/2001EP0873630A4 Method and apparatus for demodulating a received signal
12/12/2001CN1326633A Method and apparatus for demodulating and equalizing am compatible digital
12/12/2001CN1326632A Frequency correction in pilot symbol assisted demodulator
12/12/2001CN1326623A Method for reference signal generation in presence of frequency offsets in commnications station with spatial processing
12/12/2001CN1326609A Circuit and method for I/Q modulation with independent, high efficiency amplitude modulation
12/11/2001US6330293 Method for receiving multicarrier digital signals
12/11/2001US6330290 Digital I/Q imbalance compensation
12/11/2001US6330288 Coding/modulation scheme selection technique
12/11/2001US6330277 Multi-channel parallel/serial concatenated convolutional codes and trellis coded modulation encoder/decoder
12/11/2001US6330276 Transmission level setting circuit and modem unit using the same
12/11/2001US6330241 Multi-point to point communication system with remote unit burst identification
12/11/2001US6329937 Robust data communications using multiple spectral images
12/11/2001US6329929 Telemetry system with phase-locking noise suppressing receiver
12/11/2001US6329905 Power line communication system and method
12/11/2001CA2247555C Ntsc interference detectors using comb filters that suppress dtv pilot carrier to extract ntsc artifacts
12/07/2001CA2349986A1 Multi-carrier communication system with sample rate pilot carrier and time division duplexing frame rate pilot carrier
12/06/2001WO2001093521A2 Frequency calibration for burst data reception systems
12/06/2001WO2001093520A2 Ultra wideband pulse formation
12/06/2001WO2001093519A1 Ultra wideband communication system with low noise reception
12/06/2001WO2001093518A1 Method and receiver for estimating data bit rates
12/06/2001WO2001093505A2 Communication structure with channels configured responsive to reception quality
12/06/2001WO2001093482A2 Carrierless ultra wideband wireless signals for conveying application data
12/06/2001WO2001093479A1 Multi-dimensional orthogonal resource hopping multiplexing communications method and apparatus
12/06/2001WO2001093478A1 Multi-carrier communication apparatus and multi-carrier communication method
12/06/2001WO2001093446A2 Ultrawide bandwidth communication system and method for fast synchronisation
12/06/2001WO2001093445A2 System and method for baseband removal of narrowband interference in ultra wideband signals
12/06/2001WO2001093444A1 Ultra wide band system and method for fast synchronization
12/06/2001WO2001093443A2 A low power, high resolution timing generator for ultrawide bandwidth communication systems
12/06/2001WO2001093442A1 Ultrawide band system and method for fast synchronization using multiple detection arms
12/06/2001WO2001093441A1 Ultra wide bandwidth spread-spectrum communications method and system