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)
08/2003
08/13/2003EP1335518A1 Reception of multicarrier spread-spectrum signals
08/13/2003EP1335512A2 Preprocessing of the superimposed signals in a layered modulation digital transmission scheme to use legacy receivers
08/13/2003EP1335054A2 Method and device for measuring weft thread, particularly in electronic circular knitting machines
08/13/2003EP1334595A2 Intervote modulator
08/13/2003EP1334578A2 Wireless clock synchronization
08/13/2003EP1075751A4 Method and apparatus for performing a modulation
08/13/2003EP0728393B1 Simultaneous demodulation and decoding of a digitally modulated radio signal
08/13/2003CN2566543Y Network for discriminating RSVP ability of user's equipment using SIP
08/13/2003CN1436412A Method for determining gains of different carriers, radio transmission units and modules for such units
08/13/2003CN1436409A Method and apparatus for reduction of interference in FM in-band on-channel digital audio broadcasting receiver
08/13/2003CN1435960A Information notifying method, mobile communication system, base station and mobile station
08/13/2003CN1435959A Device for correction of data error using channel state information
08/13/2003CN1435958A OFDM diversity receiver and method for receiving OFDM signal
08/13/2003CN1435952A Carrier recovery device of vestigial sideband receiver and method for recovery of carrier using same
08/13/2003CN1435951A Base band circuit of receiver and low frequency cut-off frequency controlling method
08/13/2003CN1435520A Method and apparatus specially adapted for measuring weft yarn in circular loom
08/13/2003CN1118195C Digital information transmission method and ground digital multimedia TV broadcasting system
08/13/2003CN1118170C Apparatus and method for processing quadrature amplitude modulated (QAM) signal
08/13/2003CN1118168C Balance modulator
08/13/2003CN1118153C Synchronization in digital data transmission system
08/13/2003CN1118148C Non-linearity-caused distortion compensating system
08/12/2003US6606719 Method and arrangement to estimate transmission channel characteristics
08/12/2003US6606487 Automatic frequency correction method and apparatus for time division duplex modes of 3G wireless communications
08/12/2003US6606484 Distortion correction circuit for direct conversion receiver
08/12/2003US6606363 Method and apparatus for estimating a frequency offset by combining pilot symbols and data symbols
08/12/2003US6606357 Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size
08/12/2003US6606351 Ingress protection in a communication system with orthogonal carriers
08/12/2003US6606345 Base station which uses pre-rotation before transmission
08/12/2003US6606344 Method and apparatus for generating complex four-phase sequences for a CDMA communication system
08/12/2003US6606296 Data transmission method and radio system
08/12/2003US6606025 Synchronous demodulator
08/12/2003US6606010 Quadrature vestigial sideband digital communications method
08/12/2003CA2328169C Coarse frequency synchronisation in multicarrier systems
08/12/2003CA2327785C Method and apparatus for fine frequency synchronization in multi-carrier demodulation systems
08/07/2003WO2003065755A1 Information notification method, mobile communication system, base station, and mobile station
08/07/2003WO2003065673A1 Pilot frequency acquisition based on a window of data samples
08/07/2003WO2003065668A1 Fast settling data slicer comprising a low-pass filter with switchable cut-off frequency and a notch-filter
08/07/2003WO2003065638A1 Vdsl system based on dmt line coding and method for determining length of cyclic prefix samples using the system
08/07/2003WO2003065636A1 Zipper dmt system and method for measuring timing advance using the system
08/07/2003WO2003065635A1 Reception of multicarrier spread- sprectrum signals
08/07/2003WO2003065611A1 Transmitting and receiving apparatus, radio communication system, and transmitting and receiving method
08/07/2003WO2003065609A2 Pilot interpolation for a gated pilot with compensation for induced phase changes
08/07/2003WO2003065600A1 Direct conversion receiver and dc offset reducing method
08/07/2003WO2003065568A2 Additive dc component detection included in an input burst signal
08/07/2003WO2003047137A3 Method and device for the synchronization of radio stations and a time-synchronous radio bus system
08/07/2003WO2003012977A3 Circuit arrangement for the regulation of a direct component of a signal and mobile radio transmitter
08/07/2003US20030149991 Radio frequency characterization of cable plant and corresponding calibration of communication equipment communicating via the cable plant
08/07/2003US20030147655 Unified multi-carrier framework for multiple-access technologies
08/07/2003US20030147477 Circuit for detecting a center level of a FSK demodulated signal to correct same
08/07/2003US20030147476 Expectation-maximization-based channel estimation and signal detection for wireless communications systems
08/07/2003US20030147475 Wireless communication apparatus
08/07/2003US20030147474 Method and apparatus for determining modulation scheme for retransmission in a communication system
08/07/2003US20030147472 High speed QPSK MMIC and QAM modulator
08/07/2003US20030147471 Cross correlated trellis coded quatrature modulation transmitter and system
08/07/2003US20030147460 Block equalization method and device with adaptation to the transmission channel
08/07/2003US20030147458 Adaptive vector modulation method and system
08/07/2003US20030147456 Frequency offset estimator
08/07/2003US20030147358 Radio base station apparatus and communication terminal
08/06/2003EP1333634A1 Receiver for GMSK and offset-QAM using a Viterbi decoder
08/06/2003EP1333633A1 Waveform shaping method and equipment
08/06/2003EP1333608A2 Data transmission system and data transmission method for cable television
08/06/2003EP1333607A2 Apparatus for correcting error of data using channel state information
08/06/2003EP1333606A2 Transmission of CPM spread spectrum communications
08/06/2003EP1333604A1 Diversity receiver and orthogonal frequency division multiplexed signal receiving method
08/06/2003EP1333590A2 Correlator for reception of CPM spread-spectrum communications
08/06/2003EP1333589A2 Reception of CPM spread spectrum communications
08/06/2003EP1332613A1 Multi-standard channel decoder
08/06/2003EP1332607A2 Evaluation circuit for alternating voltage pulses
08/06/2003EP1332595A2 Qpsk modulator connected to an ask modulator
08/06/2003EP1332594A2 Method and device for the recording and processing of signal waves
08/06/2003EP1332562A1 Apparatus for reducing phase noise in a local carrier signal caused by powering down of circuit elements during discontinuous data transmissions
08/06/2003EP1072088B1 Quadrature oscillator network for transmitter
08/06/2003EP1036434B1 Automatic gain-controlled vhf/uhf antenna tuning apparatus
08/06/2003CN2565214Y Network for identifying user equipment resource reservation protocol capacity by session started protocol
08/06/2003CN1435037A Correction of sampling frequency offset in orthogonal frequency division multiplexing system
08/06/2003CN1434588A Time-frequency union spreading method based on OFDM-CDMA for broadband radio communication system
08/06/2003CN1434587A Synchronous method and equipment for orthogonal FDM modulation system
08/06/2003CN1117460C Echo phase offset correction for multi-carrier modulation and demodulation system
08/06/2003CN1117459C Method and apparatus for superframe bit alloation in discrete multitone system
08/06/2003CN1117458C Absolute-phasing synchronization capturing circuit
08/06/2003CN1117457C Clock regeneration circuit
08/06/2003CN1117456C Absolute phasing circuit
08/06/2003CN1117448C Orthogonal frequency division multiplexing reference carrier replay device
08/06/2003CN1117430C Gain control method and circuit
08/06/2003CN1117427C AM modulated wave eliminating circuit
08/06/2003CN1117426C Multi-carrier transmitting apparatus and method
08/05/2003US6603958 Method and apparatus for a carrier frequency control in a wireless communication system
08/05/2003US6603826 Method and receiver for dynamically compensating for interference to a frequency division multiplex signal
08/05/2003US6603824 Method for demodulating a carrier wave modulated by a digital symbol sequence
08/05/2003US6603822 Communicating errors in a telecommunications system
08/05/2003US6603821 Wireless communication terminal capable of correctly specifying position of burst and having small frequency error of recovered carrier
08/05/2003US6603820 Demodulator having rotation means for frequency offset correction
08/05/2003US6603819 Radio symbol synchronization and doppler estimation techniques
08/05/2003US6603816 Receiver and receiving-decoding method
08/05/2003US6603808 Dual mode phone line networking modem utilizing conventional telephone wiring
08/05/2003US6603807 Isolator and a modem device using the isolator
08/05/2003US6603806 Method and apparatus for high data rate wireless communications over wavefield spaces
08/05/2003US6603801 Spread spectrum transceiver for use in wireless local area network and having multipath mitigation
08/05/2003US6603734 Method for eliminating interference in an OFDM radio receiver
08/05/2003US6603368 High data rate vector demodulator
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