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)
08/1998
08/25/1998US5799000 Highly bandwidth-efficient communications method
08/25/1998US5798674 Band Limited AM modulator using linear power amplification
08/25/1998CA2090247C Overlapped multilevel codes
08/20/1998WO1998036580A2 A synchronization system and method for digital communication systems
08/20/1998WO1998036577A1 Predictive coding method and decoding method for dynamic image
08/20/1998WO1998036545A1 Method and apparatus for processing a multi-level fsk signal
08/20/1998WO1998036506A1 Code division multiple access signal transmitter, cdma network base station and terminal comprising such a transmitter
08/20/1998DE19743779A1 High order coding method for digital information transmission
08/20/1998DE19705612A1 Tuner for multi frequency signal reception
08/20/1998CA2280689A1 A synchronization system and method for digital communication systems
08/19/1998EP0859494A2 Synchronisation of the local oscillator in multicarrier systems
08/19/1998EP0859472A1 Code division multiple access transmitter
08/19/1998EP0859459A1 Phase-shift modulation of a direct antenna-driving VCO
08/19/1998EP0858695A1 Apparatus and method for digital data transmission
08/19/1998CN1191052A Apparatus for decoding video signals encoded in different formats
08/19/1998CN1191050A Apparatus for demodulating and decoding video signals
08/18/1998US5796959 Noise shaping technique for spread spectrum communications
08/18/1998US5796814 Digital transmission system comprising a receiver with cascaded equalizers
08/18/1998US5796788 Method and apparatus for interference decorrelation in time and space
08/18/1998US5796787 Receiver and method thereof
08/18/1998US5796786 Phase error detecting method and phase tracking loop circuit
08/18/1998US5796784 Method and apparatus for modifying amplitude of at least one symbol
08/18/1998US5796783 Method for generating a composite modulated signal
08/18/1998US5796782 Digital modulator with Root-Nyquist filter
08/18/1998US5796780 Method for transmitting and receiving a digital communications signal
08/18/1998US5796776 Code sequence generator in a CDMA modem
08/18/1998US5796772 Multi-band, multi-mode spread-spectrum communication system
08/18/1998US5796716 Method and apparatus for simultaneous voice/data transmission
08/18/1998CA2142963C Device and method for utilizing zero-padding constellation switching with frame mapping
08/18/1998CA2141272C Signal reception system comprising an adaptive filter
08/18/1998CA2138958C A data decoder and method for use there in using a dynamically indexed channel state metric
08/13/1998WO1998035510A2 Remote wireless unit having reduced power operating mode
08/13/1998WO1998035477A1 Demodulation with separate branches for phase and amplitude
08/13/1998WO1998035476A1 Method for transmitting digital signals by correlated frequencies
08/13/1998WO1998035473A2 Remote wireless unit having reduced power operating mode
08/13/1998WO1998035470A1 Receiver with baseband i and q demodulator
08/13/1998WO1998035462A1 Processes for acoustically transmitting a digital message and decoding of this transmission, and relative instruments
08/13/1998WO1998035458A1 Method of synchronizing a remote station with a base station in a discrete multitone spread spectrum communications system
08/13/1998WO1998035457A1 Delay compensation
08/13/1998WO1998035456A1 Delay compensation in a discrete multitone spread spectrum communications system
08/13/1998WO1998035455A1 Method of synchronizing a remote station with a base station in a discrete multitone spread spectrum communications system
08/13/1998WO1998026545A3 A method and apparatus for improved phase shift keyed (psk) signal demodulation
08/13/1998WO1998012880A3 Multiple carrier transmission system with differential coding of subcarriers
08/13/1998DE19705354A1 Digital signal transmission system for radio communications network
08/13/1998CA2251630A1 Method for transmitting digital signals by correlated frequencies
08/12/1998EP0858197A2 AFC circuit of digital demodulation device
08/12/1998EP0858045A2 Apparatus and method for recovering a clock signal for use in a portable data carrier
08/12/1998EP0857388A1 Broadband, low power fm/fsk transceiver for wireless communications systems
08/12/1998EP0857387A1 Modulation process with a continuous phase
08/12/1998EP0857377A1 Embedded data link and protocol
08/12/1998CN1190299A Frame synchornization method and apparatus for use in digital communication system utilizing OFDM method
08/12/1998CN1190286A Method and apparatus utilizing compensated multiple output signal source
08/11/1998US5794147 In a radio communication system
08/11/1998US5793862 Information signal detection device and information signal detection method
08/11/1998US5793819 Radio communication terminal station
08/11/1998US5793818 Circuit for processing modulated signals
08/11/1998US5793817 DC offset reduction in a transmitter
08/11/1998US5793800 Method and apparatus for minimizing phase error in a transmitter section of a transceiver
08/11/1998US5793799 Switchable circuit for processing and demodulating digital and analog signals
08/11/1998US5793796 Method of recovering data from a received spread spectrum radio signal
08/11/1998US5793795 Method for correcting errors from a jamming signal in a frequency hopped spread spectrum communication system
08/11/1998US5793759 Apparatus and method for digital data transmission over video cable using orthogonal cyclic codes
08/11/1998US5793261 Saw stabilized FSK oscillator circuit
08/11/1998US5793250 Phase demodulator selectively using a first or a second detector
08/11/1998US5791342 Medical data transmission system
08/11/1998CA2103392C Method for channel adaptive detecting/equalizing
08/11/1998CA2101527C Frequency translation apparatus and method
08/06/1998WO1998034382A1 Correction of phase and amplitude distortion, particularly for multicarrier signals
08/06/1998WO1998034381A1 Data transmission method and radio system
08/06/1998WO1998034368A2 Method and device in a communication system
08/06/1998WO1998034357A1 Compensation of doppler shift in a mobile communication system
08/06/1998WO1998034347A1 Automatic frequency control circuit
08/06/1998WO1998034339A1 Digital compensation for wideband modulation of a phase locked loop frequency synthesizer
08/06/1998WO1998034128A1 Phase detector for a predetermined incoming data sequence
08/06/1998CA2279596A1 Phase detector for a predetermined incoming data sequence
08/05/1998EP0856962A2 Digital audio broadcast receiver
08/05/1998EP0856211A2 Transmission of digital and analog signals in the same band
08/05/1998EP0698324B1 A communication device for computer networks, particularly of the cordless type
08/05/1998EP0643894B1 Qam signal encoding/decoding system
08/05/1998CN1189750A Communication method, base station and terminal apparatus
08/05/1998CN1189729A Symbol timing recovery circuit in digital demodulator
08/05/1998CN1189728A Receiving apparatus and decoder
08/05/1998CA2228564A1 Afc circuit of digital demodulation device
08/04/1998US5790784 Network for time synchronizing a digital information processing system with received digital information
08/04/1998US5790604 Method and apparatus for automatic frequency correction acquisition
08/04/1998US5790602 Receiver synchronization using punctured preamble
08/04/1998US5790595 Method for obtaining bit-specific reliability information
08/04/1998US5790587 Multi-band, multi-mode spread-spectrum communication system
08/04/1998US5790570 Concatenated trellis coded modulation and linear block codes
08/04/1998US5790555 Signal multiplexer and multiplexing method
08/04/1998US5790550 Method for allocating data elements to a set of carriers, mapping unit and modulator to perform this method
08/04/1998US5790536 Hierarchical communication system providing intelligent data, program and processing migration
08/04/1998US5790532 Voice over video communication system
08/04/1998US5790516 Pulse shaping for data transmission in an orthogonal frequency division multiplexed system
08/04/1998US5790514 Multi-point OFDM/DMT digital communications system including remote service unit with improved receiver architecture
08/04/1998US5789991 FSK modulating and demodulating apparatus wherein each binary data is represented by same number of cycles of modulated signal
08/04/1998US5789988 Clock recovery circuit for QAM demodulator
07/1998
07/30/1998WO1998014042A3 Method of high-order codification and transmission of information
07/29/1998EP0855116A1 Burst mode preamble
07/29/1998CN1189271A Circuit device for generating control signal
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