Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 27 - Modulated-carrier systems
Patents for H04L 27 - Modulated-carrier systems (89,721)
10/1998
10/28/1998EP0874493A2 Scrambling in a full-duplex modem
10/28/1998EP0874491A2 Signal processing apparatus and method
10/28/1998EP0874472A2 Method and device for informationtransmission on power supply lines
10/28/1998EP0874466A2 Reed-Solomon decoding circuit and method
10/28/1998EP0873630A1 Method and apparatus for demodulating a received signal
10/28/1998EP0873598A1 A method for direct sequence spreading of a data sequence (dsss)
10/28/1998EP0873588A1 Method and device for modulating the frequency of a high-frequency signal
10/28/1998EP0586554B1 Binary data error correction in a modulated signal using hint signal indicating noise exceeding certain limits
10/28/1998CN1197566A Data receiving method for receiving data through predetermined clear zones of a powerline
10/28/1998CN1197342A Adaptive channel equalizer for use in digital communication system utilizing OFDM method
10/28/1998CN1197337A Method and apparatus for spectral efficient transmission of CDMA modulated signals
10/27/1998US5828710 AFC frequency synchronization network
10/27/1998US5828709 Apparatus and method for improving stability of transmitting frequency by using costas loop section in communication system of half duplex transmitting method
10/27/1998US5828708 CID demodulator for DCT
10/27/1998US5828707 Differential detecting apparatus for detecting phase difference of phase-modulated signal
10/27/1998US5828705 Carrier tracking technique and apparatus having automatic flywheel/tracking/reacquisition control and extended signal to noise ratio
10/27/1998US5828696 Timing recovery in a network-synchronized modem
10/27/1998US5828695 QAM system in which the constellation is modified in accordance with channel quality
10/27/1998US5828692 Baseband demodulator for polar or rectangular modulated signal in a cordless spread spectrum telephone
10/27/1998US5828676 Method and apparatus for robust communication based upon angular modulation
10/27/1998US5828650 Combined modulation--and multiple access method for radio signals
10/27/1998CA2115946C Multidimensional trellis-coded communication system
10/22/1998WO1998047248A1 System for transmitting high-speed added-value services in terrestrial digital broadcasting
10/22/1998WO1998037650A3 Transmit/receive compensation in a discrete multitone spread spectrum system
10/21/1998EP0872985A2 Symbol synchronisation in multicarrier receivers
10/21/1998EP0872975A2 Method for the adaptive synchronization of chaotic systems and data transmission system using said method
10/21/1998EP0872096A1 Apparatus for demodulating and decoding video signals
10/21/1998EP0872068A1 Biodirectional point to multipoint network using multicarrier modulation
10/21/1998EP0801866A4 Phase detector in a carrier recovery network for a vestigial sideband signal
10/21/1998EP0752185A4 Carrier recovery system for a vestigial sideband signal
10/21/1998EP0752173A4 Blind equalizer for a vestigial sideband signal
10/21/1998EP0752172A4 Carrier independent timing recovery system for a vestigial sideband modulated signal
10/21/1998CN1196841A Apparatus and method of determining symbol rate and carrier frequency
10/21/1998CN1196839A Transmission process in which conversion oscillator signal is synthesised by means of fractional N-phase-shift control loop
10/21/1998CN1196617A Method and device for transmission information through power-supply wire
10/20/1998US5825833 Digital and analog reception apparatus
10/20/1998US5825832 Method and device for the reception of signals affected by inter-symbol interface
10/20/1998US5825829 Modulator for a broadband communications system
10/20/1998US5825828 Method and apparatus for multi-level quadrature amplitude modulation
10/20/1998US5825826 Method and apparatus for frequency domain ripple compensation for a communications transmitter
10/20/1998US5825820 Waveform shaping method and equipment
10/20/1998US5825819 Asymmetrical digital subscriber line (ADSL) line driver circuit
10/20/1998US5825818 Apparatus and method of recovering a timing signal in a transmission apparatus by adjusting tap coefficients
10/20/1998US5825816 Spectral and power shaping mapper for high data rate signalling
10/20/1998US5825812 Suppressed side lobe direct-sequence-spread-spectrum radio communication method and device
10/20/1998US5825810 MSK spread-spectrum receiver which allows CDMA operations
10/20/1998US5825807 System and method for multiplexing a spread spectrum communication system
10/20/1998US5825805 Spread spectrum communication system
10/20/1998US5825768 For a transceiver of a communications system
10/20/1998US5825761 Radio communication equipment with transmission rate regulating function
10/20/1998US5825257 GMSK modulator formed of PLL to which continuous phase modulated signal is applied
10/20/1998US5825242 Modulator/demodulator using baseband filtering
10/20/1998US5825241 Differential demodulator
10/18/1998CA2232132A1 Modulator for modulating digital signals
10/15/1998WO1998045977A2 Mapper for high data rate transmission through channels subject to robbed bit signalling
10/15/1998WO1998045970A1 System and method for spectrally shaping transmitted data signals
10/15/1998WO1998045936A1 Frequency doubling of a quadrature-amplitude modulated signal using a frequency multiplier
10/15/1998WO1998024202A3 Apparatus and method for block phase estimation
10/15/1998DE19715022A1 System zur Übertragung hochratiger Mehrwertdienste im terrestrischen Rundfunk A system for transmitting high-rate value-added services in terrestrial broadcasting
10/15/1998CA2285073A1 System and method for spectrally shaping transmitted data signals
10/15/1998CA2284768A1 Mapper for high data rate transmission through channels subject to robbed bit signalling
10/14/1998EP0871305A2 Timing phase control apparatus and timing phase control method
10/14/1998EP0635183A4 Code division multiple access (cdma) inbound messaging system utilizing re-use of sequences.
10/14/1998CN1196147A Adaptive multimode equaliser
10/14/1998CN1195822A Method of generating sine/cosine function and apparatus using same
10/13/1998US5822379 Device for receiving digital signals
10/13/1998US5822378 Receiver, a demodulator, and a demodulation method
10/13/1998US5822375 Method for detecting received signal sequences
10/13/1998US5822374 Method for fine gains adjustment in an ADSL communications system
10/13/1998US5822373 Method and apparatus for optimization of wireless communications
10/13/1998US5822372 Multicarrier system using subchannel characteristics to implement different error rates within a data stream
10/13/1998US5822371 Mapper for high data rate signalling
10/13/1998US5822366 Transceiver and method for generating and processing complex I/Q-signals
10/13/1998US5822362 Sinusoidal phase modulation method and system
10/13/1998US5822339 Data decoder and method to correct inversions or phase ambiguity for M-ary transmitted data
10/13/1998US5822323 Frequency division multiplexed signal generating apparatus and related decoding apparatus
10/13/1998US5822103 Signal generation using optical pulses
10/13/1998US5822020 Method and device for generating a modulated television signal
10/13/1998US5821782 Frequency synthesis using a remodulator
10/13/1998US5820081 Process and circiuit arrangement for the transmission of digital control data
10/13/1998CA2123748C Frequency stabilizing device
10/13/1998CA2116219C Radio information and communication system using multicarrier spread-spectrum transmission system
10/13/1998CA2108217C Carrier phase lock detecting apparatus used in psk-modulated signal receiver for satellite communication system
10/13/1998CA2106140C Fsk receiver having a pll local oscillator operable in intermittent operation in accordance with its phase locked state
10/08/1998WO1998044691A1 Transmission method and device for gmsk-type signal forms
10/08/1998WO1998044690A1 Symbol timing recovery network for a carrierless amplitude phase (cap) signal
10/08/1998WO1998044688A1 Method for transmitting on a plurality of transmission media, with dynamic data dispatching, and corresponding transmitter and terminal
10/08/1998WO1998044670A2 A code synchronization unit and method
10/08/1998WO1998044638A1 Communications systems and methods employing code rate partitioning with nonorthogonal modulation
10/08/1998DE19713175A1 Verfahren und Anordnung zur Übertragung von Daten Method and apparatus for transmitting data
10/08/1998CA2285339A1 A code synchronization unit and method
10/08/1998CA2256556A1 Method for transmitting on a plurality of transmission media, with dynamic data dispatching, and corresponding transmitter and terminal
10/07/1998EP0869675A2 An exciter circuit for digital television transmitters
10/07/1998EP0869674A1 Transmitting system and method
10/07/1998EP0869673A2 Television signal broadcasting system with common clock reference
10/07/1998EP0869672A1 Predistortion circuit for an RF amplifier
10/07/1998EP0869671A1 Frequency controlling circuit for digital television transmission
10/07/1998EP0869670A1 Combining adjacent TV channels for transmission by a common antenna
10/07/1998EP0869666A2 A digital system having a sync confidence counter
10/07/1998EP0869650A2 A trellis encoder for encoding a digital data stream
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