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)
10/1999
10/07/1999DE19814530A1 Verfahren zur digitalen Übertragung von Daten in einem drahtlosen Kommunikationsnetz und Empfangsgerät zum Empfang von nach dem Verfahren übertragenen Daten Method for the digital transmission of data in a wireless communication network and receiving apparatus for receiving transmitted data according to the method
10/07/1999CA2326531A1 Digital audio broadcasting method using puncturable convolutional code
10/06/1999EP0948175A1 Device and method for transmitting information and device and method for receiving information
10/06/1999EP0948174A2 Time sharing of FFT and differential decoding in a multicarrier receiver
10/06/1999EP0948173A1 Modulator for multiple modulation signals
10/06/1999EP0948172A2 Method of automatic, clock-free, recognition of modulation type
10/06/1999EP0948140A1 Iterative demapping and decoding of multilevel modulated signal
10/06/1999EP0947081A1 Spectrally efficient modulation using overlapped gmsk
10/06/1999EP0947069A1 Receiver decoder circuitry, and associated method, for decoding a channel encoded signal
10/06/1999EP0947046A1 Dpsk demodulator
10/06/1999EP0908024A4 Packet-switched spread-spectrum system
10/06/1999CN1231095A Method for eliminating interference in OFDM radio receiver
10/06/1999CN1231089A Orthogonal frequency-division multiplex transmission system, and its transmitter and receiver
10/06/1999CN1230836A Automatic frequency control in FSK receiver
10/06/1999CN1230832A Simply-constructed digital radio communication system capable of changing transmission capacity mode
10/06/1999CA2267587A1 Apparatus and method for reducing cross-talk in broadband systems and method of improving data recovery
10/05/1999US5963643 Method and system for the transfer of information between two populations of persons, one nomadic and the other sedentary
10/05/1999US5963604 Communication signal receiver with sampling frequency control
10/05/1999US5963603 Method of determining sampling delay
10/05/1999US5963600 Micro-controller based frequency calibration
10/05/1999US5963599 Truncated maximum likelihood sequence estimator
10/05/1999US5963597 For demodulating data from a quadrature-modulated signal
10/05/1999US5963592 Adaptive channel equalizer for use in digital communication system utilizing OFDM method
10/05/1999US5963590 Method for receiving digital radio signals and a digital radio signals receiver
10/05/1999US5963589 Digital signal modulation analysis device
10/05/1999US5963586 Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
10/05/1999US5963585 MSK spread-spectrum receiver which allows CDMA operations
10/05/1999US5963581 Impulse radio receiver
10/05/1999CA2188204C Communication control unit
10/05/1999CA2178815C Device and method for multiplexing signal
10/05/1999CA2155903C Ic card radio modem
10/02/1999CA2264247A1 Broadband multi-carrier modulator and related programming process
09/1999
09/30/1999WO1999049635A1 Method and arrangement to reduce clipping of multi-carrier signals
09/30/1999WO1999049586A2 Spread spectrum transceiver for use in wireless local area network and having multipath mitigation
09/30/1999WO1999049575A2 Sign-cross product automatic frequency control loop
09/30/1999WO1999049569A1 Demoludator circuits
09/30/1999WO1999049567A1 Demodulator circuits
09/30/1999DE19811830A1 Verfahren zur Bestimmung von Übertragungsfehlern bei einem mit Hilfe eines Multiträgerverfahrens übermittelten, seriellen Datenstrom A method of determining transmission errors in a multi-carrier method by using a transmitted serial data stream
09/29/1999EP0944979A1 Method for digital transmission or radio broadcast
09/29/1999EP0944978A1 A method and system for quadrature modulation and digital-to-analog conversion
09/29/1999EP0944973A1 Method for suppressing interference signals during transmission of digital signals
09/29/1999EP0944971A2 Wideband code-division-multiple access system and method
09/29/1999EP0944967A1 Digital satellite direct broadcast system
09/29/1999EP0944960A2 Digital continuous phase modulation for a dds-driven phase locked loop
09/28/1999US5960067 Apparatus and method for parallel transmission of data over a telephone line
09/28/1999US5960044 Apparatus and method for block phase estimation
09/28/1999US5960043 Signal receiver
09/28/1999US5960042 Method in a selective call receiver for synchronizing to a multi-level radio signal
09/28/1999US5960040 Communication signal processors and methods
09/28/1999US5960031 Ultrawide-band communication system and method
09/28/1999US5960030 Carrier detection unit and carrier detection method
09/28/1999US5960029 Coherent dual-channel QPSK modulator/demodulator for CDMA systems, and modulating/demodulating methods therefor
09/28/1999US5960003 Process for distributing rate and power in a multicarrier transmission of a data stream
09/28/1999US5959967 Digital transmission system
09/28/1999US5959965 Digital broadcasting receiver
09/28/1999CA2181809C Split frequency band signal digitizer and method
09/28/1999CA2162516C An analog-to-digital converter circuit
09/28/1999CA2156038C Radio modem
09/28/1999CA2108233C Method and apparatus for reducing the peak-to-average power in multi-carrier rf communication systems
09/23/1999WO1999048219A1 METHOD AND APPARATUS FOR CLOCK TIMING RECOVERY IN ψDSL, PARTICULARLY VDSL MODEMS
09/23/1999WO1999048214A2 Transmitting device for transmitting a digital information signal alternately in encoded form and non-encoded form
09/23/1999WO1999039484A3 Transmission method and radio system
09/23/1999DE19814770C1 Verfahren zur automatischen taktfreien Erkennung von Signal-Modulationsarten Method for automatic clock-free detection of signal modulation types
09/23/1999CA2290644A1 Transmitting device for transmitting a digital information signal alternately in encoded form and non-encoded form
09/22/1999EP0944216A1 Digital filter for a phase lock loop used for the correction of rotation of a QPSK or QAM demodulator
09/22/1999EP0944215A2 Nyquist filtering in quadratur amplitude modulators
09/22/1999EP0944214A2 Method for detecting transmission errors in a multicarrier transmission system
09/22/1999EP0944213A2 Digital broadcast receiver
09/22/1999EP0944212A2 Communication speed switching device
09/22/1999EP0944201A2 System and method for measuring channel quality in a communication system
09/22/1999EP0944200A2 Adaptive modulation method and apparatus
09/22/1999EP0944197A1 Transmitter, receiver, transmitting method, and receiving method
09/22/1999EP0944193A2 Receiver for the reception of digital broadcasts
09/22/1999EP0944181A2 Radio information communication system using multi-carrier spread spectrum transmission system and signal collision detection method
09/22/1999EP0944180A2 Radio information communication system using multi-carrier spread spectrum transmission system and error correction method
09/22/1999EP0944179A2 Radio information communication system
09/22/1999EP0943197A2 Unreliability detector apparatus and reproduction apparatus provided with the unreliability detector apparatus
09/22/1999CN1229554A Multilevel coding with time diversity
09/22/1999CN1229553A Digital radio frequency interference canceller
09/22/1999CN1229549A Method and apparatus for receiving signal in digital radio frequency communication system
09/22/1999CN1229546A Arrangement and methods for generating radio frequency signal
09/21/1999US5956642 Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system
09/21/1999US5956624 Method and system for simultaneously broadcasting and receiving digital and analog signals
09/21/1999US5956376 Apparatus for varying a sampling rate in a digital demodulator
09/21/1999US5956375 Fast-acting Costas loop
09/21/1999US5956374 Jitter suppressing circuit
09/21/1999US5956373 AM compatible digital audio broadcasting signal transmision using digitally modulated orthogonal noise-like sequences
09/21/1999US5956372 Coding system for digital transmission compression
09/21/1999US5956345 IS-95 compatible wideband communication scheme
09/21/1999US5956328 Spread spectrum communications system
09/21/1999US5956323 Power conservation for pots and modulated data transmission
09/21/1999US5956318 Orthogonal frequency division multiplexing
09/21/1999US5955992 Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter
09/21/1999US5954787 Method of generating sine/cosine function and apparatus using the same for use in digital signal processor
09/21/1999CA2167741C Modulator-demodulator device capable of detecting an unsynchronized frame state
09/21/1999CA2166880C Method and converter for converting rectangular signals to phase signals
09/21/1999CA2158157C Method and apparatus for providing a communication link quality indication
09/21/1999CA2110826C Clock recovery circuit of demodulator
09/16/1999WO1999046887A2 Wireless local area network spread spectrum transceiver with multipath interference mitigation
09/16/1999WO1999046886A2 Off-line broadband network interface
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