Patents for H04L 27 - Modulated-carrier systems (89,721)
06/2000
06/08/2000WO2000013337A3 Method and apparatus for reducing amplitude variations in communication signals employing inserted pilot symbol
06/08/2000WO1999007162A8 Power conservation for pots and modulated data transmission
06/08/2000DE19954255A1 Phase Lock Loop und diesbezügliches Verfahren Phase lock loop and method thereof
06/08/2000DE19854458A1 Effective signal recovery method for FSK modulated signal
06/08/2000DE19854456A1 Demodulation method for FSK modulated signal
06/07/2000EP1006700A1 Signal carrier recovery method
06/07/2000EP1006699A2 Symbol synchronisation for multicarrier transmission
06/07/2000EP1006525A1 Time interleaved digital signal processing in a read channel with reduced noise figure
06/07/2000EP1005755A1 Power conservation for pots and modulated data transmission
06/07/2000EP1005748A1 Multicarrier modulation using weighted prototype functions
06/07/2000EP0811214A4 Radio tracking system and method of operation thereof
06/07/2000CN1256040A Transmission method and radio system
06/07/2000CN1256025A Activation of multiple xdsl modems with channel probe
06/07/2000CN1255787A Asymmetrical digital user's line RTD unit card and its control method
06/07/2000CN1255782A Phase-locked loop and method thereof
06/06/2000US6072997 Frequency discriminator for a direct conversion receiver
06/06/2000US6072992 High-frequency device
06/06/2000US6072848 Method and apparatus for constructing a digital phase differentiator incorporating a dynamic decrement counter
06/06/2000US6072843 Method and apparatus for sigma-delta demodulator with aperiodic data
06/06/2000US6072842 Carrier-recovery loop with stored initialization in a radio receiver
06/06/2000US6072841 Block phase estimator for the coherent detection of non-differentially phase modulated data bursts on rician fading channels
06/06/2000US6072838 Communication scheme using non-coherent frequency detection of trellis-based coding of plural transmission frequencies per baud
06/06/2000US6072829 Method of higher value step encoding
06/06/2000US6072785 Differential PSK signalling in CDMA networks
06/06/2000US6072779 Adaptive allocation for variable bandwidth multicarrier communication
06/06/2000US6072770 Method and system providing unified DPSK-PSK signalling for CDMA-based satellite communications
06/06/2000US6072374 FM modulation system using quadrature modulator
06/06/2000US6072367 Electronic balance adjusting circuit
06/06/2000US6072336 Sampling circuit system
06/06/2000CA2176945C Method and apparatus for coherent communication reception in a spread-spectrum communication system
06/06/2000CA2173516C Automatic frequency control system for gmsk-modulated signals
06/02/2000WO2000032003A2 Cellular communication device with scanning receiver and continuous mobile communication system employing same
06/02/2000WO2000031965A1 Vsb receiver
06/02/2000WO2000031941A1 Method and apparatus for the determinaton of the predistortion parameters in a quadrature modulator, by measuring the output power
06/02/2000WO2000031940A1 Bit allocation among carriers in multicarrier communications
06/02/2000WO2000031939A2 Method for determining frequency sub-band division in modems based on multicarrier modulation technique and system utilizing the method
06/02/2000WO2000031938A1 Multistandard dmt dsl transmission system
06/02/2000WO2000031936A1 I/q digital demodulator in integrated circuit technology
06/02/2000WO2000031934A1 Power-line digital communication system
06/02/2000WO2000031904A1 Method and apparatus for spreading and despreading data in a spread-spectrum communication system
06/02/2000WO2000031889A1 Processing signals of different data rates
06/02/2000WO2000031888A1 System and method for demodulating global positioning system signals
06/02/2000WO2000031881A1 Linear rf power amplifier and transmitter
06/02/2000WO2000014972A3 Afc device and method of controlling reception frequency in a dual-mode terminal
06/02/2000WO2000010301A3 Signalling transmission using phase rotation techniques in a digital communications system
06/02/2000WO1999063673A9 Sequential decoder, and receiver using sequential decoder
06/02/2000CA2351317A1 Processing signals of different data rates
05/2000
05/31/2000EP1005241A1 Method for communication between a mobile terminal and an accessory
05/31/2000EP1005228A2 Circuit for the transmission of signals received analog and/or digital
05/31/2000EP1005205A2 Fast start-up for multicarrier systems
05/31/2000EP1005204A2 Symbol synchronization in an OFDM receiver
05/31/2000EP1005203A1 Multistandard DMT DSL transmission system
05/31/2000EP1005202A2 Frequency modulation circuit
05/31/2000EP1004197A1 Method for supporting simple synchronization on the carrier of an energy dispersed qpsk signal
05/31/2000EP1004191A1 Remote vehicle data interface tag system
05/31/2000DE19854252A1 Transmitting a frame synchronization word comprises occupying different half of bandwidth with signal during each half of frame synchronization time during which other half has no signal
05/31/2000CN1255000A Speed matching method and digital communication system
05/31/2000CN1254996A Frequency modulation circuit
05/31/2000CN1254916A Reproducer and signal processor
05/30/2000US6070056 Amplitude-phase correction circuit, receiving device and transmitting device
05/30/2000US6069924 Differential detector with error correcting function
05/30/2000US6069917 Blind training of a decision feedback equalizer
05/30/2000US6069537 Double mode modulator
05/30/2000US6069524 FPLL with third multiplier in an analog input signal
05/30/2000CA2206386C Automatic frequency control circuit
05/30/2000CA2186348C Data level selection for multilevel vsb transmission system
05/30/2000CA2181539C Trellis coded modulation system for hdtv
05/25/2000WO2000030316A1 Method and device for detecting periodical noise section in digital subscriber line transmission system
05/25/2000WO2000030312A1 Frequency correction in a pilot symbol assisted demodulator
05/25/2000WO2000030280A1 Channel spreading device and method for cdma communication system
05/25/2000WO2000030274A1 A method for modifying the channel impulse response in tdma systems
05/25/2000WO2000030273A1 Adaptive multiple sub-band common-mode rfi suppression
05/25/2000WO2000030265A2 Method and apparatus for saving current while performing signal strength measurements in a homodyne receiver
05/25/2000WO2000030254A1 Receiver for digital terrestrial broadcasting
05/25/2000WO2000030245A1 Circuit and method for i/q modulation with independent, high efficiency amplitude modulation
05/25/2000WO2000019617A3 Performing digital subscriber line (dsl) modem communication over an ac link bus
05/25/2000CA2351685A1 Circuit and method for i/q modulation with independent, high efficiency amplitude modulation
05/24/2000EP1003312A2 Carrier recovery from digitally phase modulated signals
05/24/2000EP1003311A2 Modulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC card
05/24/2000EP1003310A1 Calibration device
05/24/2000EP1002405A1 Method and device for combined measurement of the beginning of a data block and carrier frequency shift in a multicarrier transmission system in f classes
05/24/2000EP1002404A2 Truncated maximum likelihood sequence estimator for wireless local area networks
05/24/2000EP1002390A1 Method and system for rapid initial signal detection in a wireless communications system
05/24/2000EP1002292A2 Circuit for manipulation-protected reception of an ook-modulated signal
05/24/2000EP1002272A1 Method and apparatus for adaptive control of forward error correction codes
05/24/2000EP0663085B1 Method and apparatus for reduced-complexity viterbi-type sequence detectors
05/24/2000CN1052838C Receiver for suppressing ghosts in signals modulating carrier in quadrature phasing with video carrier
05/23/2000US6067330 Demodulation method and demodulation apparatus
05/23/2000US6067329 VSB demodulator
05/23/2000US6067325 Modem designs, and systems using the modem designs for communicating information between a number of remote locations and one or more central locations
05/23/2000US6066995 Four-phase phase converter
05/23/2000US6066982 Phase locked loop apparatus for pulse signal demodulation
05/23/2000US6066980 Near Nyquist rate variable rate receiver
05/23/2000CA2082998C Rf receiver agc incorporating time domain equalizer circuitry
05/23/2000CA2046316C Method of effecting channel estimation for a fading channel when transmitting symbol sequences
05/18/2000WO2000028711A1 Method for measuring and evaluating multi-carrier signals
05/18/2000WO2000028710A1 Carrier phase estimator device and demodulator
05/18/2000WO2000028709A1 Dummy error addition circuit
05/18/2000WO2000028708A1 Method for ask demodulation and ask demodulator
05/18/2000WO2000028688A1 Transmitting/receiving device and transmitting/receiving method