H04L 27 - Modulated-carrier systems

Patents for H04L 27 - Modulated-carrier systems (89,721)
12/1994
12/07/1994	EP0627834A1 Demodulator for RDS signals
12/07/1994	EP0627833A1 Demodulator for RDS signals
12/07/1994	EP0627832A1 Demodulator for RDS signals
12/07/1994	EP0627830A1 Digital receiver for variable symbol rate communications
12/07/1994	EP0627829A1 Bit clock recovery for CPFSK signals
12/07/1994	EP0627141A1 High speed modem systems incorporating distribution preserving tomlinson encoding and decoding for secondary channels
12/06/1994	US5371761 Transmission system and receiver for this system
12/06/1994	US5371622 Coherent optical telecommunication network wherein each send/receive terminal can simultaneously communicate with more than one other send/receive terminal
12/06/1994	US5371548 System for transmission of digital data using orthogonal frequency division multiplexing
12/06/1994	US5371481 Tuning techniques for I/Q channel signals in microwave digital transmission systems
11/1994
11/30/1994	EP0626772A2 Frequency shift keying modulating circuit
11/30/1994	EP0626766A2 Hybrid circuit and data communication apparatus
11/30/1994	EP0539526B1 Technique for demodulating and decoding mls dpsk transmissions using a digital signal processor
11/30/1994	EP0211865B2 Supervisory tone detection
11/29/1994	US5369800 Multi-frequency communication system with an improved diversity scheme
11/29/1994	US5369791 Apparatus and method for discriminating and suppressing noise within an incoming signal
11/29/1994	US5369789 Burst signal transmitter
11/29/1994	US5369500 Method and apparatus for determining facsimile quality and system using same
11/29/1994	US5369378 Digital DQPSK modulator
11/29/1994	US5369374 Differential detection demodulator
11/24/1994	WO1994027399A2 Telecom adapter for interfacing computing devices to the analog telephone network
11/24/1994	WO1994027392A1 A communication device for computer networks, particularly of the cordless type
11/24/1994	WO1994027390A1 Method and apparatus for encoding data
11/24/1994	WO1994027389A1 Time diversity receiver
11/24/1994	WO1994027382A1 Premises, peripheral and vehicular local area networking
11/24/1994	WO1994027379A1 Dual-pass rake receiver for a digital radio link between a fixed and a mobile radio unit
11/24/1994	CA2161018A1 Telecom adapter for interfacing computing devices to the analog telephone network
11/23/1994	CN1095543A Code division multiple access (cdma) inbound messa ging system utilizing re-use of sequences
11/23/1994	CN1095534A Method and apparatus of estimating channel quality in a receiver
11/22/1994	US5367538 Apparatus and method for direct phase digitizing
11/22/1994	US5367537 Saw-based FSK modulating circuit
11/22/1994	US5367536 Parallel transmission of TDMA sync and data bursts by artificial frequency selective fade and decision feedback equalization
11/22/1994	US5367271 Quadrature modulator having phase shift and amplitude compensation circuits
11/22/1994	CA2019935C Output waveform control circuit
11/22/1994	CA1333195C Remote control
11/17/1994	EP0624287A1 Modem including an equalizer for amplitude jitter
11/17/1994	EP0597027A4 Apparatus and method for controlling transmitted power of a modem.
11/17/1994	DE4315806A1 Method for decision feedback clock adjustment
11/15/1994	US5365548 Digital FSK transmitter
11/15/1994	US5365546 Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions
11/15/1994	US5365545 MODEM-channel bank converter
11/15/1994	US5365470 Fast fourier transform multiplexed pipeline
11/15/1994	US5365185 Frequency controlled loop for demodulating OOK and PSK signals
11/15/1994	US5365120 Data slicer with hold
11/10/1994	WO1994026067A1 Multiple carrier digital television signal decoder
11/10/1994	WO1994026051A1 Quantized coherent rake receiver
11/10/1994	WO1994026050A1 π/4 SHIFT DQPSK MODULATOR
11/10/1994	WO1994026049A2 Wireless data transceiver
11/10/1994	WO1994026046A1 Compensation for local oscillator errors in an ofdm receiver
11/10/1994	WO1994026024A1 Demodulator for manchester-coded fm signals
11/10/1994	DE4416177A1 Balanced phase modulator for use in the microwave band
11/10/1994	CA2139235A1 Demodulator for manchester-coded fm signals
11/09/1994	EP0624033A2 QAM television transmission system
11/09/1994	EP0624019A2 Trellis coded QAM using punctured convolutional codes
11/09/1994	EP0624018A1 Rotationally invariant multilevel coded systems
11/09/1994	EP0623256A1 Variable speed asynchronous modem
11/09/1994	EP0614582A4 Digital demodulator for preamble-less burst communications.
11/08/1994	US5363415 Carrier regenerating device correctly operable in mobile satellite communication
11/08/1994	US5363414 Method for detecting a signal sequence
11/08/1994	US5363413 Data decoder and method for use therein using a dynamically indexed channel state metric
11/08/1994	US5363412 Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization
11/08/1994	US5363411 Receiver for digital radio communication
11/08/1994	US5363410 Modulation circuit for a digital radio communications apparatus using a phase shifted DQPSK modulation system
11/08/1994	US5363409 Method and system for multiplexed data transmission from hazardous environments
11/08/1994	US5363408 Mode selective quadrature amplitude modulation communication system
11/08/1994	US5363096 Method and apparatus for encoding-decoding a digital signal
11/08/1994	CA2069104C Frequency converter for a radio communications system
11/08/1994	CA2014916C Direct conversion receiver with dithering local carrier frequency for detecting transmitted carrier frequency
11/02/1994	EP0622909A2 Quantized coherent rake receiver for CDMA signals
11/02/1994	EP0621998A1 Method and apparatus for the formatting of data for transmission.
11/02/1994	EP0491840A4 Signal digitizing method and system
11/02/1994	CN2181783Y Multi-address expansion frequency-spectrum communication modulating and demodulating device
11/01/1994	US5361408 Direct conversion receiver especially suitable for frequency shift keying (FSK) modulated signals
11/01/1994	US5361403 AM-FM transmitter power amplifier
11/01/1994	US5361400 Apparatus and method for removing distortion in a received signal
11/01/1994	US5361276 All digital maximum likelihood based spread spectrum receiver
11/01/1994	US5361047 PI/4 shift QPSK modulator and communication apparatus used therewith
11/01/1994	US5361046 Modulator having fractional sample/symbol time
10/1994
10/27/1994	WO1994024759A1 Balanced modulator-transmitter
10/27/1994	CA2160592A1 Balanced modulator-transmitter
10/26/1994	EP0621712A2 Distortion canceller for line receivers
10/26/1994	EP0620960A1 Information coding and transmission process
10/26/1994	EP0620959A1 Frequency synchronized bidirectional radio system
10/26/1994	EP0486554B1 Process and device for converting digitally modulated high-frequency reception signals
10/26/1994	CN1094205A Error-correcting tandem encoding system
10/25/1994	US5359709 Apparatus and method for providing multiple operating configurations in data circuit terminating equipment
10/25/1994	US5359652 Tone receiver comprising a switch capacitor zero crossing detector
10/25/1994	CA2000785C Digital automatic gain control
10/25/1994	CA2000007C Coherent phase shift keyed demodulator
10/19/1994	EP0620668A2 Removal of plus/minus 90 and 180 phase errors in QAM receivers
10/19/1994	EP0620667A1 Pi/4 shift QPSK modulator
10/19/1994	EP0620666A2 Differential continuous phase modulation system for multipath environments
10/19/1994	EP0619927A1 Power amplifier linearization in a tdma mobile radio system
10/18/1994	US5357502 Device for the reception of digital data time frequency interlacing, notably for radio broadcasting at high bit rate towards mobile receivers with nyquist temporal window
10/12/1994	EP0619666A2 Rotationally invariant trellis coded modulation system
10/12/1994	EP0619665A2 Demodulator for a plurality of modulation schemes
10/11/1994	US5355393 Digital oscillator for carrier frequency synchronization
10/11/1994	US5355243 Direct detecting of optical PSK signals
10/11/1994	US5355101 Quadrature modulator having circuit for correcting phase error
10/11/1994	US5355092 Relatively simple QPSK demodulator, that uses substantially all digital circuitry and an internally generated symbol clock, and circuitry for use therein

1 ... 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 ... 898