Patents for H04L 27 - Modulated-carrier systems (89,721)
02/2004
02/26/2004US20040038650 Apparatus and method for signal strength compensation of highly-time-variant mobile radio channels and reception unit for mobile radio transmission
02/26/2004US20040037570 Optical frequency shift keying method
02/26/2004US20040037442 Synchronised binaural hearing system
02/26/2004US20040037378 Automatic gain control circuit and method thereof and demodulation apparatus using the same
02/26/2004US20040037377 Fully digital AGC circuit with wide dynamic range and method of operation
02/26/2004US20040037376 Radio communication apparatus and method having automatic frequency control function
02/26/2004US20040037375 Radio frequency tuner
02/26/2004US20040037374 Efficient partial response equalization
02/26/2004US20040037370 Data receiving device
02/26/2004US20040037369 Data generating method, data generator, and transmitter using the same
02/26/2004US20040037368 Variable rate modulator
02/26/2004US20040037366 Apparatus and method for multicarrier modulation and demodulation
02/26/2004US20040037364 Device for producing a phase and amplitude modulated radio frequency signal
02/26/2004US20040037354 Communication receiver with virtual parallel equalizers
02/26/2004US20040037352 XDSL system with improved impedance circuitry
02/26/2004US20040037351 Spread spectrum communication system apparatus
02/26/2004US20040037241 Interlaced frequency division duplexing method for duplex communication system
02/26/2004US20040037232 Method of adjustment for receiver of signals transmitted in bursts and corresponding receivers
02/26/2004US20040037218 Methods and apparatus for receiving OFDM signals
02/26/2004US20040037216 Multitone power spectral density
02/26/2004US20040037215 Orthogonal frequency division multiplexing communication method and apparatus adapted to channel characteristics
02/26/2004US20040037214 Point to multipoint system and process for the transmission over the electricity network of digital data
02/26/2004US20040036528 Method and apparatus for phase-domain semi-coherent demodulation
02/26/2004US20040036527 Method and apparatus for frequency shift-keying demodulation and applications thereof
02/26/2004DE10309405A1 Wafer-Schaltung mit der Fähigkeit einer genauen Umwandlung eines analogen Signals zu einem digitalen Signal Wafer circuit with the ability of a precise conversion of an analog signal to a digital signal
02/25/2004EP1392031A2 Fading frequency estimation apparatus
02/25/2004EP1392030A2 Modulators and demodulators which can use a plurality of modulation techniques
02/25/2004EP1392017A1 A MIMO radio telecommunication system using multilevel-coded modulation operative by iterative determination of soft estimates, and a corresponding method
02/25/2004EP1392015A1 Symbol timing correcting circuit, receiver, symbol timing correcting method, and demodulation processing method
02/25/2004EP1392004A2 Method for multi-user MIMO transmission and apparatus suited therefore
02/25/2004EP1391998A2 Spread spectrum data receiving device
02/25/2004EP1391997A2 Digitally compensated direct conversion receiver
02/25/2004EP1391095A1 Method for estimating the transfer function of a multicarrier signal transmission channel and corresponding receiver
02/25/2004EP1391094A1 Apparatus and method for measuring sub-carrier frequencies and sub-carrier frequency offsets
02/25/2004EP1391093A1 Recognition of modulation type by means of a marked phase rotation factor of a training sequence
02/25/2004EP1391055A2 Line interface with a matching impedance coupled to a feedback path
02/25/2004EP1391032A2 An apparatus, computer readable medium, transmission medium, and method for synchronizing a received signal based on a maximum likelihood principle using a bisection technique
02/25/2004EP1195917B1 Method for peak to average power ratio reduction in wireless communication system
02/25/2004CN1478341A Methods and appangements in telecommunications system
02/25/2004CN1478337A Multiple access frequency hopping network with interference avoidance
02/25/2004CN1477831A Physical layer encryption method based on time-varying MPSK modulation in wireless local area network
02/25/2004CN1477807A Method for obtaining carrier frequency departure of time division synchronous CDMA (TD-SCDMA) user terminal and equipment
02/25/2004CN1477802A Method for defining parallel dual butterfly computation fast Fourier transform processor structure
02/25/2004CN1477793A Multiple input and multipute output telecommunication system with speed-up ball decode
02/25/2004CN1140143C Demodulator circuit and demodulation method of radio receiving equipment
02/25/2004CN1140092C Signal four-phase modulation-demodulation method in high speed frequency-hopping communication
02/25/2004CN1140074C Frequency modulation circuit
02/25/2004CN1140062C Modulating method used for receiver
02/25/2004CN1140059C Iterative demapping
02/24/2004US6697993 Transmission and reception methods and devices in a transmission system comprising convolutional interleaving/deinterleaving
02/24/2004US6697831 Device and method for performing multiple modulus conversion using inverse modulus multiplication
02/24/2004US6697609 Carrier reproducing apparatus and method of the same
02/24/2004US6697440 Demodulator of receiver
02/24/2004US6697439 Carrier acquisition in a DC/MA system
02/24/2004US6697437 Receiving apparatus
02/24/2004US6697350 Adaptive vector correlator for spread-spectrum communications
02/24/2004US6697345 Multi-transport mode radio communications having synchronous and asynchronous transport mode capability
02/24/2004US6697098 Co-channel interference detection network for an HDTV receiver
02/24/2004US6696900 Method for demodulating PSK modulated signals
02/24/2004US6696886 Automatically adjusting gain/bandwidth loop filter
02/24/2004CA2340685C Method and device for transmitting information symbols using a plurality of carriers and method and device for receiving information symbols
02/24/2004CA2152781C Digital demodulator with frequency and timing control
02/19/2004WO2004015949A1 Method and apparatus for ofdm transmission using vector feedback
02/19/2004WO2004015948A1 Symbol interleaving
02/19/2004WO2004015947A1 Differential decoder followed by non-linear compensator
02/19/2004WO2004015946A1 Joint channel and noise variance estimation in a wideband ofdm system
02/19/2004WO2004015898A1 Techniques for communicating information using prime-frequency waveform mapping
02/19/2004WO2004015853A1 Quadrature demodulator using a fft-processor
02/19/2004WO2003073659A3 3g radio
02/19/2004WO2003043194A3 Frequency acquisition and locking detection circuit for phase lock loop
02/19/2004US20040034863 Fast digital channel changing
02/19/2004US20040034451 Frequency shift key demodulator employing a teager operator and a method of operation thereof
02/19/2004US20040033785 Modulation-demodulation apparatus and wireless communication apparatus
02/19/2004US20040032918 Communication method, system and apparatus utilizing burst symbol cycles
02/19/2004US20040032912 Linearization of amplifiers using baseband detection and non-baseband pre-distortion
02/19/2004US20040032911 Methods and apparatus for an ADSL transceiver
02/19/2004US20040032909 Reference symbol multicarrier signal designed to limit intersymbol interference
02/19/2004US20040032903 Adaptive equaliser
02/19/2004US20040032871 Switch-based modem channel sharing
02/19/2004US20040032854 Apparatus and method for synchronizing sampling frequency and/or carrier frequency in a multi-carrier communication system
02/19/2004US20040032842 Continuously adjusted-bandwidth discrete-time phase-locked loop
02/19/2004US20040032839 Access burst detector corrrelator pool
02/19/2004US20040032838 Apparatus and method for increasing channel capacity of a mobile communication system
02/19/2004US20040032825 Wireless receiver for sorting packets
02/19/2004US20040032354 Multi-band ultra-wide band communication method and system
02/19/2004US20040032303 Oscillator transmission circuit and radio apparatus
02/19/2004DE4410721B4 Schaltung zur Erzeugung einer modulierten Oszillatorfrequenz Circuit for generating a modulated oscillator frequency
02/19/2004DE10234823A1 Verfahren zur Aufteilung der Bitrate von QPSK-Signalen in zwei oder mehrere Teilkanäle Mechanism for sharing the bit rate of QPSK signals into two or more sub-channels
02/19/2004DE10233909A1 Radio signal receiver arrangement has detection unit with high pass filter deriving reception field strength signal, threshold comparator outputting value representing radio signal modulation method
02/19/2004DE10202876B4 Verfahren zum Übertragen eines analogen Datenstroms und Vorrichtung zur Durchführung des Verfahrens A method for transmitting an analog data stream, and apparatus for carrying out the method
02/18/2004EP1389874A2 Fast digital channel changing
02/18/2004EP1389861A1 Channel tracking using decision directed estimation in pilot-assisted wireless multi-carrier systems
02/18/2004EP1389860A2 Frequency offset estimator
02/18/2004EP1389844A1 Apparatus and method for increasing channel capacity of a mobile communication system using HPSK
02/18/2004EP1389835A1 Downlink synchronisation method for a point-to-multipoint system with ofdm modulation
02/18/2004EP1389384A2 Method and apparatus for a pulse decoding communication system using multiple receivers
02/18/2004EP1389366A2 Transmission in multi-channel communication system using selective channel power control
02/18/2004EP1389365A1 Method and apparatus for peak-to-average power reduction
02/18/2004EP1290845B1 Method for synchronising ofdm symbols during radio transmissions
02/18/2004EP1266447B1 Assembly and method for compensating the offset of a mixer