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