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)
08/2000
08/17/2000WO2000048318A1 Circuit for the frequency multiplication of an angle modulated signal using a pll and method
08/17/2000WO2000048304A1 Quadrature oscillator network for transmitter
08/17/2000DE19904376A1 Verfahren und Schaltung zur Kompensationssteuerung von Offsetspannungen einer in einem Schaltungsbaustein integrierten Funkempfangsschaltung Method and circuit for compensation control of offset voltages of an integrated circuit chip in a radio receiver circuit
08/17/2000DE19903367A1 Verfahren zum Synchronisieren von Sender und Empfänger bei einer Datenübertragung mit einem Mehrträgerfrequenzverfahren über Energieversorgungsleitungen A method of synchronizing transmitter and receiver in a data transmission with a multi-carrier frequency method over power lines
08/17/2000DE19820836A1 Signal message transmission method e.g. for satellite communications and mobile telephony
08/17/2000DE10004886A1 Receiver for modulated wave, carrying data with number of multiplexed intermediate carriers, with high precision for adaptive phase synchronisation
08/16/2000EP1028566A2 Distortion estimation apparatus, frequency offset compensation apparatus and reception apparatus for QAM signals
08/16/2000EP1028565A2 Combined precoding and shaping, which generates an uncorrelated sequence
08/16/2000EP1028564A1 Estimation of carrier and sampling frequency offsets in multicarrier receivers
08/16/2000EP1028563A2 Time-domain equalisation for discrete multi-tone transceiver
08/16/2000EP1028562A2 Recovery of timing in multicarrier systems
08/16/2000EP1028557A2 Built-in self test for a satellite demodulator
08/16/2000EP1028553A1 Communication device and method of peak power control
08/16/2000EP1027779A1 Rapidly decorrelating spreading sequences for ds-cdma transceivers
08/16/2000EP1027769A1 Method and device in a telecommunication system
08/16/2000EP1027768A1 Digital modulation employing single sideband with suppressed carrier
08/16/2000EP0920732A4 Method and apparatus for communicating information
08/16/2000EP0888675A4 Method and apparatus for conditioning modulated signals using window expansion
08/16/2000CN1263659A Modulating method, modulating device, demodulating method, and demodulating device
08/16/2000CN1263649A Channel encoding/decoding apparatus and method for communication system
08/16/2000CN1263645A Simplified receiver for frequency shift keyed signals
08/15/2000US6104767 Method and apparatus for estimating a frequency offset
08/15/2000US6104763 Synchrodyning of VSB and QAM final I-F signals supplied by separate converters in a QAM/VSB digital TV receiver
08/15/2000US6104762 Timing recovery apparatus and a diversity communication apparatus using the same
08/15/2000US6104761 Constrained-envelope digital-communications transmission system and method therefor
08/15/2000US6104760 Peak voltage reduction on DMT line driver
08/15/2000US6104758 Process and system for transferring vector signal with precoding for signal power reduction
08/15/2000US6104746 Spread spectrum communication system
08/15/2000US6104703 Communication systems and methods employing receivers with estimators
08/15/2000US6104238 FM demodulator including tuning of a filter and detector
08/15/2000US6104237 Method for estimating phase in demodulator
08/12/2000CA2296968A1 Wideband parallel processing digital tuner
08/10/2000WO2000046956A1 High speed digital communications modulator
08/10/2000WO2000046927A1 Three point modulated phase locked loop frequency synthesis system and method
08/10/2000WO2000046922A1 Frequency offset differential pulse position modulation
08/10/2000WO2000046914A1 Method and circuit for controlling the compensation of offset voltages of a radio receiver circuit which is integrated in a circuit module
08/10/2000WO2000033501A3 Adaptive modem and method for adaptive election of modulation mode
08/10/2000WO2000031940B1 Bit allocation among carriers in multicarrier communications
08/10/2000WO2000019730A3 Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system
08/10/2000WO1999053666A8 Coarse frequency synchronisation in multicarrier systems
08/10/2000DE19912825C1 Method of detecting data symbols for mobile radio systems, e.g. GSM systems
08/09/2000EP1026849A2 Optical transmission system as well as transmitter and receiver
08/09/2000EP1026840A1 Polarisation modulation for optical transmission
08/09/2000EP1026829A2 Method and circuit for controlling the power supply in a communicaton device
08/09/2000EP1025731A1 Radio transmission from a communication station with an antenna array to provide a desirable radiation pattern
08/09/2000EP1025669A2 Method of measuring frequency difference, and receiver
08/09/2000EP1025663A1 A system and method for mitigating intermittent interruptions in an audio radio broadcast system
08/09/2000EP1025650A1 Parallel correlator architecture for synchronizing direct sequence spread-spectrum signals
08/09/2000CN1262567A Apparatus and method for digital radio communication
08/09/2000CN1055363C Apparatus for decoding signal encoded by using trellis coded modulation
08/08/2000US6101230 Sampling clock signal recovery device and method in receiving terminal of DMT system
08/08/2000US6101225 Method and apparatus for performing a modulation
08/08/2000US6101224 Method and apparatus for generating a linearly modulated signal using polar modulation
08/08/2000US6101223 System and method for optimizing the uncoded modulation of circular constellations using circular precoding and nonlinear encoding
08/08/2000US6101217 System and method for demodulating digital information from an odd constellation
08/08/2000US6101216 Splitterless digital subscriber line communication system
08/08/2000US6101213 Method system and computer program product for spread spectrum communication using circular waveform shift-keying
08/08/2000US6100827 Modulation systems and methods that compensate for DC offset introduced by the digital-to-analog converter and/or the low pass filter thereof
08/08/2000US6100755 Phase decision circuit
08/08/2000US6100721 Circuit and method of extending the linear range of a phase frequency detector
08/08/2000US6100717 Line driver circuit with reduced power consumption
08/08/2000CA2195410C Data adapter
08/08/2000CA2091814C Mode selective quadrature amplitude modulation communication system
08/06/2000CA2297992A1 An optical transmission system and transmitters and receivers
08/04/2000CA2297339A1 Digital modulation process and modulator implementing the process
08/03/2000WO2000045559A1 Multicarrier transmission system with low power sleep mode and rapid-on-capability
08/03/2000WO2000045538A1 A method and an apparatus for clipping signals in a cdma system
08/03/2000WO2000045329A1 Method for non-contacting data transmission and transponder for a non-contacting data transmission system
08/03/2000WO2000045138A2 Dsss receiver
08/03/2000WO2000030265A3 Method and apparatus for saving current while performing signal strength measurements in a homodyne receiver
08/03/2000WO2000010272A8 Efficient spectral saving fqpsk and fqam signal transmission and reception systems
08/03/2000DE19904309A1 Method for inputting transmission quality of digital signals modulated by multi-support/carrier method by using selection of individual phase maxima that represents measure of transmission quality
08/03/2000CA2633064A1 Multicarrier transmission system with low power sleep mode and rapid-on capability
08/03/2000CA2361036A1 A method and an apparatus for clipping signals in a cdma system
08/02/2000EP1024635A1 Guard interval generation in a transmission with DMT modulation
08/02/2000EP1024634A2 Adaptive decision regions and metrics
08/02/2000EP1024633A2 Method and system for generating CPM (continuous phase modulation) signals
08/02/2000EP1024624A2 Method and apparatus for signal receiving synchronization
08/02/2000EP1024622A2 Method and system for selecting a coding/modulation scheme
08/02/2000EP1024621A2 Buffering and sequencing of soft decisions of multiple channels into a single shared biorthogonal decoder
08/02/2000EP1024620A2 Buffering and sequencing of data from multiple channels through a shared decoder
08/02/2000EP1023798A1 Synchronization techniques and systems for radiocommunication
08/02/2000EP1023797A1 Low power density radio systems
08/02/2000EP1023792A1 Method and apparatus for maintaining a predefined transmission quality in a wireless man network
08/02/2000EP1023784A2 Method and receiving device for estimating channels in communications systems
08/02/2000CN1262010A Absolute-phasing synchronization capturing circuit
08/02/2000CN1262006A Digital system for subscriber lines allowing high bit rates
08/02/2000CN1261998A A subscriber unit and method for use in a wireless communication system
08/02/2000CN1261996A Multiple mode direct conversion receiver
08/02/2000CN1261995A Opposite polarization interference cancellation in satellite communication
08/02/2000CN1261758A Receiver-transmitter unit according to load wave to shift pre-tuning
08/02/2000CN1261757A Coarse frequency deviation estimate device in orthogonal frequency-diviion multiple receiver
08/02/2000CN1261750A Frequence modulated digital data transmission device
08/01/2000US6098161 Method of generating address of coefficient memory in OFDM adaptive channel equalizer and apparatus employing the same
08/01/2000US6097776 Maximum likelihood estimation of symbol offset
08/01/2000US6097770 Frequency offset estimation for wireless systems based on channel impulse response
08/01/2000US6097768 Phase detector for carrier recovery in a DQPSK receiver
08/01/2000US6097766 Timing phase synchronization detecting circuit and demodulator
08/01/2000US6097765 Method and apparatus for performing digital fractional minimum shift key modulation for a very small aperture terminal
08/01/2000US6097764 Pragmatic trellis-coded modulation system and method therefor
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