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)
12/1996
12/18/1996CN1138397A Digital modulation method with controlled envelope variation
12/18/1996CN1138394A Digital communications equipment using differential quaternary frequency shift keying
12/18/1996CN1138256A Orthogonal frequency separating multiplex method and its transmission and receiving device
12/18/1996CN1138252A Radio communication system
12/17/1996US5586150 Method and apparatus for symbol synchronization in multi-level digital FM radio
12/17/1996US5586148 Coherent detection system
12/17/1996US5586147 Demodulation method using quadrature modulation
12/17/1996US5586146 Programmable voltage controlled attenuator
12/17/1996US5585952 Communication apparatus automatically selecting one of two operation modes
12/17/1996US5585850 Adaptive distribution system for transmitting wideband video data over narrowband multichannel wireless communication system
12/17/1996US5585761 Demodulation of digital phase modulated signal
12/17/1996CA2069476C An apparatus and method for varying a signal in a transmitter of a transceiver
12/12/1996WO1996039768A1 Digital super-regenerative detector rf receiver
12/12/1996WO1996039764A1 Improved direct sequence spread spectrum system
12/12/1996DE19520353A1 Verfahren und Schaltungsanordnung zur Verbesserung des Empfangsverhaltens bei der Übertragung von digitalen Signalen Method and circuit arrangement for improving the reception performance in the transmission of digital signals
12/12/1996CA2194382A1 Digital super-regenerative detector rf receiver
12/11/1996EP0748124A2 Signal processing apparatus and method
12/11/1996EP0748118A2 Signal processing system
12/11/1996EP0748093A1 Digital transmission system using decision means for selecting the synchronisation mode
12/11/1996EP0748092A2 Modulation method and modulator for digital signal
12/11/1996EP0748058A2 Implied interleaving, a family of systematic interleavers and deinterleavers
12/11/1996EP0748056A2 An error detection and correction system for a stream of encoded data
12/11/1996EP0746932A1 Wireless direct sequence spread spectrum digital cellular telephone system
12/11/1996EP0746931A1 Digital demodulator with frequency and timing control
12/11/1996EP0746930A1 Frequency stabilized fsk transmitter
12/11/1996EP0746910A1 Modem-channel bank converter
12/11/1996EP0746909A1 De-interleaving and buffering in one memory
12/10/1996US5583892 Method and system for performing transmission of digital data by coding bit information into the shape of a pulse and decoding the bit information from the shape of the pulse
12/10/1996US5583890 Error correction of MSK signals dependent on sample quality
12/10/1996US5583889 Data receiver
12/10/1996US5583887 Transmission signal processing apparatus
12/10/1996US5583785 Method and apparatus for signal decoder using instantaneous magnitude and phase detection
12/10/1996CA2097058C Apparatus and method for recovering a time-varying signal using multiple sampling points
12/10/1996CA2079531C Phase divider for complex signals
12/08/1996CA2330645A1 An apparatus and method for demodulating signals
12/08/1996CA2178448A1 An error detection and correction system for a stream of encoded data
12/08/1996CA2170469A1 Signal processing apparatus and method
12/05/1996WO1996038924A1 Wideband zero if demodulator using single l.o
12/04/1996EP0745747A1 A data transfer system and a demodulator therefor
12/04/1996EP0745302A1 High speed communications system for analog subscriber connections
12/04/1996EP0745290A1 A high-data-rate wireless local-area network
12/04/1996EP0745284A1 Adaptive system for self-tuning and selecting a carrier frequency in a radio frequency communication system
12/04/1996EP0581799B1 Adaptive phase control for a power amplifier predistorter
12/04/1996EP0495006B1 Soft decision decoding with channel equalization
12/04/1996CN1137333A Receiver with quadrature decimation stage, method of processing digital signals
12/03/1996US5581804 Nationwide communication system
12/03/1996US5581582 Automatic frequency control method and apparatus therefor
12/03/1996US5581579 Method and apparatus to adaptively control the frequency of reception in a digital wireless communication system
12/03/1996US5581578 Digital communication system and a receiver for use in such a system
12/03/1996US5581575 Method and apparatus for transmission of variable rate digital data
12/03/1996US5581555 Reverse path allocation and contention resolution scheme for a broadband communications system
12/03/1996US5581368 Data-reducing coding method for transmitting information from a transmitter to a receiver
12/01/1996CA2177556A1 Transmitter and receiver for orthogonal frequency division multiplexing signal
11/1996
11/28/1996WO1996037987A1 Method and device for phase-modulated signals
11/28/1996WO1996037948A1 Methods and apparatus for modulating, demodulating and amplifying
11/28/1996WO1996034481A3 Adaptive filter for use in a tdm/tdma receiver
11/28/1996DE4143537C2 DC offset correction apparatus for receiver
11/28/1996CA2222091A1 Methods and apparatus for modulating, demodulating and amplifying
11/28/1996CA2194662A1 Method and device for phase-modulated signals
11/27/1996EP0744846A1 Method for managing radio resources during packet transmission and transmitter and receiver for realizing the procedure
11/27/1996EP0744844A1 Method of inscription of binary data on a carrier wave, especially optical, and transmission system using this method
11/27/1996EP0744104A1 Method, device, and radio for compensating for modulator frequency drift while allowing for data transmission
11/27/1996EP0744095A1 Continuous phase modulation device using a frequency synthesizer with a phase-locked loop
11/27/1996CN1136871A Communication system for communicating with a plurality of selective call receivers and method thereof
11/27/1996CN1136741A Direct frequency conversion receiver
11/27/1996CN1136736A Time division multiple address connecting system receiver
11/26/1996US5579435 Discriminating between stationary and non-stationary signals
11/26/1996US5579347 Digitally compensated direct conversion receiver
11/26/1996US5579346 Automatic frequency control method and circuit for use in a delay detection type demodulator
11/26/1996US5579345 For a mobile telecommunications system
11/26/1996US5579343 Soft decision circuit
11/26/1996US5579342 Pre-compensated frequency modulation (PFM)
11/26/1996US5579341 Multi-channel digital transceiver and method
11/26/1996US5579338 Spread spectrum receiver using partial correlations
11/26/1996US5579337 System employing dissipative pseudorandom dynamics and selective feedback for communications and measurement
11/26/1996US5579124 Method and apparatus for encoding/decoding broadcast or recorded segments and monitoring audience exposure thereto
11/26/1996US5578947 Delayed detection type demodulator
11/26/1996CA2079287C Coded modulation with unequal error protection for fading channels
11/26/1996CA1338743C Subscriber unit for wireless digital telephone system
11/24/1996CA2177122A1 Method for the management of radio resources during the transmission of packets
11/21/1996WO1996037066A1 Doubly orthogonal code and frequency division multiple access communication system
11/21/1996WO1996037062A1 Bidirectional point to multipoint network using multicarrier modulation
11/21/1996WO1996037060A1 Method for spread spectrum communications
11/21/1996WO1996031943A3 Quadrature signal conversion device
11/21/1996WO1996024989A3 Multi-point to point communication system
11/21/1996DE19518204A1 Multilevel trellis coding system using binary convolutional code
11/21/1996CA2221761A1 Bidirectional point to multipoint network using multicarrier modulation
11/21/1996CA2221101A1 Doubly orthogonal code and frequency division multiple access communication system
11/21/1996CA2195453A1 Method for spread spectrum communications
11/20/1996EP0743768A1 Device and method for multiplexing signal
11/20/1996EP0742973A1 Local oscillator phase noise cancelling modulation technique
11/20/1996CN1136378A Method and apparatus for coherent communication reception in a spread-spectrum communication system
11/20/1996CN1136377A Receiver having an adjustable symbol slice demodulator
11/20/1996CN1136251A Acquisition of carrier phase and symbol timing through joint estimation of phase and timing adjustments
11/19/1996US5577087 Variable modulation communication method and system
11/19/1996US5577066 Charge-coupled-device based data-in-voice modem
11/19/1996US5577041 Method of controlling a personal communication system
11/19/1996US5577025 Signal acquisition in a multi-user communication system using multiple walsh channels
11/19/1996US5576837 Digital modulators for use with sub-nyquist sampling of raster-scanned samples of image intensity
11/19/1996US5576835 Method for run-length coding for shortening transmission time
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