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)
12/2005
12/15/2005US20050276343 Rate adaptation and parameter optimization for multi-band single carrier transmission
12/15/2005US20050276342 Architecture for a digital subscriber line analog front end
12/15/2005US20050276341 Method and apparatus for transmitting and/or receiving data
12/15/2005US20050276340 Method and system for determining symbol boundary timing in a multicarrier data transmission system
12/15/2005US20050276339 Training sequence for symbol boundary detection in a multicarrier data transmission system
12/15/2005US20050276338 Training sequence for channel estimation in a data transmission system
12/15/2005US20050276337 Bandwidth efficient orthogonal frequency division multiplexing communication system
12/15/2005US20050276336 Multiplexing scheme for an orthogonal frequency division multiplexing system
12/15/2005US20050276335 Generalized polyphase channelization system
12/15/2005US20050276316 Method and apparatus for receiving GPS/GLONASS signals
12/15/2005US20050276310 Method for ultra wideband communication, and ultra wideband transmitter and receiver
12/15/2005US20050276254 Methods and apparatus for use in reducing residual phase error in OFDM communication signals
12/15/2005US20050276245 Communication system, transmitting device, and receiving device
12/15/2005DE60202301T2 Lesegerät für berührungslose chipkarten, wobei entlang einer übertragungsleitung von der antenne zum empfänger die modulierung wechselt zwischen amplituden- und phasenmodulation Reader for contactless smart cards, which changes along a transmission line from the antenna to the receiver between the modulation amplitude and phase modulation
12/15/2005DE19946433B4 Verfahren zur Detektion vorgegebener Frequenzkomponenten A method for detecting a predetermined frequency component
12/15/2005DE10300938B4 Wandlerschaltung für eine Limiter-Empfängerstruktur und Verfahren zur Signalwandlung in einer Limiter-Empfängerstruktur Converter circuit for a limiter receiver structure and method for signal conversion in a limiter receiver structure
12/15/2005CA2567765A1 Integer cycle event detection using wavelet pass filter system and method
12/15/2005CA2565284A1 Digital broadcasting transmission/reception devices capable of improving a receiving performance and signal processing method thereof
12/14/2005EP1605721A1 A multiplexing scheme for an orthogonal frequency division multiplexing system
12/14/2005EP1605658A1 A bandwidth efficient orthogonal frequency division multiplexing communication system
12/14/2005EP1605657A2 Wireless transmitting device and wireless receiving device
12/14/2005EP1605656A2 Digital subcriber line communicating system
12/14/2005EP1605655A2 Upstream power cutback
12/14/2005EP1605654A1 Transmission system for OFDM-signals
12/14/2005EP1605651A1 Payload based channel estimation of a wireless channel
12/14/2005EP1605622A2 Communication system, transmitting device, and receiving device
12/14/2005EP1605620A1 Digital subscriber line transmission method, apparatus and system using training
12/14/2005EP1605619A1 Radio communication system and radio communication method
12/14/2005EP1605607A1 Transmission of OFDM signals using cyclic delay diversity (CDD)
12/14/2005EP1605599A2 Method for ultra wideband communication, and ultra wideband transmitter and receiver
12/14/2005EP1605597A1 Method and system for blindly detecting a shared channel out of a plurality of shared channels received in parallel
12/14/2005EP1604502A1 Transceiver with i/q mismatch compensation scheme
12/14/2005EP1604501A2 Multicarrier system wherein control data is summed to information data
12/14/2005EP1604500A1 Arrangements and methods for a digital communication system
12/14/2005EP1604499A1 Method and apparatus for reducing phase noise of phase-encoded communication signals in the receiver
12/14/2005EP1604479A2 Transmission mode selection for data transmission in a multi-channel communication system
12/14/2005EP1421793A4 A software controlled multi-mode bi-directional communication device
12/14/2005EP1374518B1 Signal processing of an amplitude-modulated and/or phase-modulated high-frequency signal according to the principle of envelope elimination and restoration
12/14/2005EP1173940B1 Quality control method for digital radio transmissions in the medium and short wave range
12/14/2005EP1090461B1 Method and apparatus for d.c. offset correction in digital-to-analog converters
12/14/2005EP1072112B1 Hybrid and all digital fm in-band-on-channel digital audio broadcasting method and system
12/14/2005CN1708997A Method and apparatus for DTMF detection and voice mixing in the CELP parameter domain
12/14/2005CN1708965A Channel estimation using the guard interval of a multicarrier signal
12/14/2005CN1708936A Multi-mode terminal in a wireless MIMO system
12/14/2005CN1708935A Data detection and demodulation for wireless communication systems
12/14/2005CN1708933A Closed-loop rate control for a multi-channel communication system
12/14/2005CN1708916A Single oscillator DSSS and OFDM radio receiver and transmitter
12/14/2005CN1708142A Method for realizing infomration channel estimation in orthogonal frequency division multiplexing system
12/14/2005CN1708042A Communication system, transmitting device, and receiving device
12/14/2005CN1708041A Multiplexing scheme for an orthogonal frequency division multiplexing system
12/14/2005CN1708040A Bandwidth efficient orthogonal frequency division multiplexing communication system
12/14/2005CN1708039A Single carrier transmitter with field inserted field synchronizing information and method thereof
12/14/2005CN1708038A Equipment for deriving analog signal
12/14/2005CN1708037A Method for the reception of data signal, corresponding reception device and computer program product
12/14/2005CN1708036A Wireless transmitting device and wireless receiving device
12/14/2005CN1708035A Method and system for analog and digital RF receiver interface
12/14/2005CN1707991A CDMA system which uses pre-rotation before transmission
12/14/2005CN1232145C PLL circuit and radio communication terminal machine
12/14/2005CN1232117C Transmitter for digital broadcasting system with comprehensive error correcting coding function and method thereof
12/14/2005CN1232116C Orthogonal frequency-division multiplying transmitter for regulating false noise sequence level value according to service mode
12/14/2005CN1232085C Circuit arrangement for demodulating voltage that is (ask)-inodulated by change of amplitude between low and high level
12/13/2005US6976202 Method and apparatus for time-frequency domain forward error correction for digital communication systems
12/13/2005US6976044 Narrowband interference canceller for wideband communication systems
12/13/2005US6975843 Method and an arrangement relating to telecommunications systems
12/13/2005US6975839 Apparatus, and associated method, for estimating frequency offset using filtered, down-sampled likelihood polynomials
12/13/2005US6975694 Digital subscriber line driver
12/13/2005US6975691 Receiver
12/13/2005US6975689 Digital modulation signal receiver with adaptive channel equalization employing discrete fourier transforms
12/13/2005US6975687 Linearized offset QPSK modulation utilizing a sigma-delta based frequency modulator
12/13/2005US6975686 IQ modulation systems and methods that use separate phase and amplitude signal paths
12/13/2005US6975685 Apparatus and method for multi-channel communications system
12/13/2005US6975684 Dynamic slave frequency selection for improving uplink frequency hopping wireless communications
12/13/2005US6975683 Radio frequency burst interference mitigation
12/13/2005US6975583 Technique for continuous OFDM modulation
12/13/2005US6975165 Method and system for the conversion of phase shift keying signals (PSK) into amplitude shift keying signals (ASK)
12/13/2005US6975140 Adaptive data transmitter having rewriteable non-volatile storage
12/08/2005WO2005117385A1 Method and apparatus for transmitting uplink acknowledgement information in an ofdma communication system
12/08/2005WO2005117384A2 Multicarrier communication apparatus, system and method with reduced radiation power
12/08/2005WO2005117383A1 Method for optimizing the distribution of transmission power between sub-channels for frequential multiplexing transmission
12/08/2005WO2005117381A1 A method for signal processing and a signal processor in an ofdm system
12/08/2005WO2005117380A1 A method for signal processing and a signal processor in an ofdm system
12/08/2005WO2005117379A1 A method for signal processing and a signal processor in an ofdm system
12/08/2005WO2005117377A1 Channel estimation in an ofdm system with high doppler shift
12/08/2005WO2005117322A1 Method of determining true error vector magnitude in a wireless lan
12/08/2005WO2005117321A1 Time varying cyclic delay diversity of ofdm
12/08/2005WO2005117320A1 Space-time block coding in orthogonal frequency division communication systems
12/08/2005WO2005117314A1 Cyclic diversity systems and methods
12/08/2005WO2005117313A1 Modulating device, modulating method, and demodulating device
12/08/2005WO2005117307A1 Method for communicating by means of a noise-like carrier and device for carrying out said method
12/08/2005WO2005117279A1 Wireless communication apparatus and communication quality estimating method
12/08/2005WO2005117275A1 Reception device
12/08/2005WO2005101656B1 Apparatus for and method of controlling the operation of an equalizer
12/08/2005WO2005096539A8 System and method for transmission and reception of qam signals at low signal to noise ratio
12/08/2005WO2005079033A3 Subband-based demodulation using reduced fourier transform for an ofdm-based communication system
12/08/2005WO2005055489A3 Method to minimize compatibility error in hierarchical modulation using variable phase
12/08/2005US20050272400 Method and system for analog and digital RF receiver interface
12/08/2005US20050272392 Wideband antenna and receiver calibration
12/08/2005US20050272383 Transmitter and a method for transmitting data
12/08/2005US20050272374 Tracking system
12/08/2005US20050271175 Minimum variance unbiased and moment estimators of carrier frequency offset in multi-carrier systems
1 ... 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 ... 898