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)
05/2003
05/14/2003EP1311126A2 Transmitting apparatus and method, receiving apparatus and method, program and recording medium, and transmitting/receiving system
05/14/2003EP1311097A1 Method for clipping a composite multicarrier modulated signal
05/14/2003EP1311096A2 Data partitioning for multi-link transmission
05/14/2003EP1311095A1 Method, transmitter and receiver for spread-spectrum digital communication by golay complementary sequence modulation
05/14/2003EP1310072A1 Frequency and time synchronisation of an ofdm receiver by means of maximum likelihood decoding
05/14/2003EP0983654A4 Synchronous coherent orthogonal frequency division multiplexing system
05/14/2003EP0968582A4 A code synchronization unit and method
05/14/2003EP0782789B1 Efficient linear power amplification
05/14/2003CN1418421A Bit interleaved coded modulation (BICM) mapping
05/14/2003CN1418417A Wireless communication transmitter and receiver
05/14/2003CN1108671C Multiprotocol directed infrared communication controller
05/14/2003CN1108665C Digital transmission system and method comprising product code combined with multidimensional modulation
05/14/2003CN1108664C Multi-level coding for decimalplace
05/14/2003CN1108660C Method and apparatus utilizing compensated multiple output signal source
05/14/2003CA2411742A1 Multi-valued fsk communication method and multi-valued fsk communication apparatus
05/13/2003US6564349 Built-in self-test systems and methods for integrated circuit baseband quadrature modulators
05/13/2003US6564051 System and method for interface between a subscriber modem and subscriber premises interfaces
05/13/2003US6563896 Digital broadcast receiver and receiving method
05/13/2003US6563888 Data transmission/reception system and data reception device
05/13/2003US6563887 Direct conversion receiver for frequency-shift keying modulated signals
05/13/2003US6563885 Decimated noise estimation and/or beamforming for wireless communications
05/13/2003US6563884 Method and apparatus for seamlessly changing the radio interface data rate in circuit switched transmission
05/13/2003US6563881 Communication method and transmitter with transmission symbols arranged at intervals on a frequency axis
05/13/2003US6563880 Method and system for simultaneously broadcasting and receiving digital and analog signals
05/13/2003US6563868 Method and apparatus for adaptive equalization in the presence of large multipath echoes
05/13/2003US6563867 Arrangement for analyzing the nonlinear properties of a communication channel
05/13/2003US6563865 Communication apparatus
05/13/2003US6563862 Digital variable symbol rate modulation
05/13/2003US6563859 Receiver and receiving method in multi-carrier spread-spectrum communications
05/13/2003US6563858 Method of performing antenna diversity in spread spectrum in wireless local area network
05/13/2003US6563786 Orthogonal frequency division multiplexing system with selectable rate
05/13/2003US6563623 System for transmitting optical data
05/13/2003US6563436 Kerdock coding and decoding system for map data
05/13/2003CA2267676C Method for wireless communication transfer with an implanted medical device
05/08/2003WO2003039091A2 Frequency error estimation
05/08/2003WO2003039055A1 Method and device for representing the initial base of an encoder in the signal space of a qam or psk modulation
05/08/2003WO2003039049A1 Direct conversion receiver
05/08/2003WO2003039025A2 A receiver including a frequency offset compensator
05/08/2003WO2003022004A3 Technique for continuous ofdm demodulation
05/08/2003WO2003019844A3 Implementing a physical layer automatic repeat request for a subscriber unit
05/08/2003WO2002095437A3 Efficient use of detectors with long dead times
05/08/2003WO2002093756A3 Gfsk receiver
05/08/2003WO2002084967A3 A phase tracking system
05/08/2003WO2002031992A3 Signal strength compensation for mobile radio channels that considerably vary with time
05/08/2003US20030087662 Communication terminal apparatus
05/08/2003US20030087634 10165368High-speed multi-channel communications transceiver with inter-channel interference filter
05/08/2003US20030087625 Direct-conversion receiver for a communication system using a modulation with non-constant envelope
05/08/2003US20030087624 Receiver
05/08/2003US20030087620 Frequency tracking using pilot and non-pilot symbols
05/08/2003US20030087617 Radio frequency control for communication systems
05/08/2003US20030087614 Systems and methods for modulator calibration
05/08/2003US20030087603 Framing method and the synchronous wireless system therewith
05/08/2003US20030086514 Dynamic digital communication system control
05/08/2003US20030086513 Agc circuit
05/08/2003US20030086509 Communications receiver architectures and algorithms permitting hardware adjustments for optimizing performance
05/08/2003US20030086508 Efficient method and system for offset phasor determination
05/08/2003US20030086507 Peak limiting architecture and method
05/08/2003US20030086506 Method for transmitting data from an interrogating device to portable objects
05/08/2003US20030086505 Phase shift key burst receiver having improved phase resolution and timing and data recovery
05/08/2003US20030086399 Transmittal of heartbeat signal at a lower level than heartbeat request
05/08/2003US20030086363 System and apparatus for block segmentation procedure for reduction of peak-to- average power ratio effects in orthogonal frequency-division multiplexing modulation
05/08/2003US20030086362 Joint reduction of NEXT and FEXT in xDSL systems
05/08/2003US20030085766 Tunable oscillator
05/07/2003EP1309145A2 Transmission using non-binary error correction codes
05/07/2003EP1309096A1 Spread spectrum communication system apparatus
05/07/2003EP1308011A1 Channel decoding apparatus and method in an orthogonal frequency division multiplexing system
05/07/2003EP1308010A2 Multi-carrier transmission method using symbol redundancy and corresponding apparatus
05/07/2003EP1308008A2 Adaptive linear equalization for walsh-modulated signals
05/07/2003EP1307991A2 Scalable pattern methodology for multi-carrier communication systems
05/07/2003EP1004191A4 Remote vehicle data interface tag system
05/07/2003CN1416625A Wireless digital high speed communications
05/07/2003CN1416622A Multipath doppler-adjusted frequency tracking loop
05/07/2003CN1416252A Collision detection method and device applied in communication system with multiple axxesses
05/07/2003CN1416251A Wireless receiving device and method shared by peripheral equipment of computer
05/07/2003CN1108066C Selective paging wireless receiver using direct conversion method
05/07/2003CN1108017C Direct conversion receiver and method of receiving data
05/06/2003WO2003047137A2 Method and device for the synchronization of radio stations and a time-synchronous radio bus system
05/06/2003US6560449 Image-rejection I/Q demodulators
05/06/2003US6560445 Radio communication system and method of operation
05/06/2003US6560440 Method for precompensating frequency data for use in high-velocity satellite communication systems
05/06/2003US6560303 Joint frame, carrier and clock synchronization scheme
05/06/2003US6560299 Diversity receiver with joint signal processing
05/06/2003US6560298 Method and apparatus for concurrent synchronization and improved automatic frequency control in a communication device
05/06/2003US6560296 Method and apparatus for modulating digital data
05/06/2003US6560294 Phase estimation in carrier recovery of phase-modulated signals such as QAM signals
05/06/2003US6560293 Apparatus and method for FM remodulation of envelope modulated data signals
05/06/2003US6560291 Device and method for transmitting information and device and method for receiving information
05/06/2003US6559994 Optical fiber transmitter for long distance subcarrier multiplexed lightwave systems
05/06/2003US6559754 System for the transmission of data from a data carrier to a station by means of one or at least one other auxiliary carrier signal
05/06/2003CA2091863C Method and apparatus for transmission and reception of a digital television signal using multicarrier modulation
05/02/2003EP1306994A2 System and method for locating a data frame within a transmitted data stream
05/02/2003EP1306978A1 Direct conversion receiver for a communication system using a non-constant envelope modulation
05/02/2003EP1097508B1 Method and apparatus for compensating for distortion in iq modulators
05/02/2003EP0758507B1 System and method for start up of a two wire modem
05/01/2003WO2003036898A1 Estimating a transmission channel with pilot symbols distributed in lattice structure
05/01/2003WO2003036897A1 Method and arrangement for limiting signal in radio transmitter
05/01/2003WO2003036896A2 Multi-mode communications transmitter
05/01/2003WO2003036894A2 Reduction of average-to-minimum power ratio in communications signals
05/01/2003WO2003036886A2 Method and system for transferring ip packets by aggregating multiple wireless communication channels for high data rate transfers
05/01/2003WO2003036849A1 Speed-dependent multicarrier modulation
1 ... 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 ... 898