Patents
Patents for H04J 11 - Orthogonal multiplex systems (25,498)
11/1989
11/28/1989US4884139 Method of digital sound broadcasting in television channels with spectrum interlacing
09/1989
09/12/1989CA1259385A1 Cross-polarization canceler/equalizer
08/1989
08/15/1989US4857858 Digital demodulation system having independently operating cross-polarization cancellers
08/01/1989US4853657 Orthogonal-polarization duplex send-receive microwave head
07/1989
07/11/1989CA1257416A1 Wireless pbx/lan system with optimum combining
04/1989
04/18/1989CA1252844A1 Bootstrapping cross-polarization canceler with a noise-blanking limiter
03/1989
03/22/1989EP0307950A2 Cross polarization interference canceller
03/21/1989CA1251586A1 Ensemble modem structure for imperfect transmission media
01/1989
01/31/1989US4801900 Image reject apparatus for signal synthesis applications
01/04/1989CN1030162A Orthogonal-polarization duplex send-receive microwave head
12/1988
12/28/1988EP0296175A1 Method and installation for digital communication, particularly between and toward moving vehicles.
12/21/1988EP0295688A1 Microwave primary emitting-receiving duplexer-unit for orthogonaly polarised waves
11/1988
11/02/1988EP0289037A2 Digital demodulation system having independently operating cross-polarization cancellers
09/1988
09/13/1988CA1241998A1 Cross-polarization interference cancellation
08/1988
08/31/1988EP0279997A2 Apparatus and method for data transmission using two crossed polarisations of an electro-magnetic wave
08/17/1988EP0278192A1 Method for digitally broadcasting in television channels
06/1988
06/21/1988CA1238370A1 Receiver unit in radio communication system
04/1988
04/27/1988EP0265218A2 Vector modulators and calibration thereof
03/1988
03/15/1988US4731816 Ensemble modem structure for imperfect transmission media
02/1988
02/25/1988WO1988000417A3 Method and installation for digital communication, particularly between and toward moving vehicles
02/23/1988US4727534 Timing and carrier recovery in dual polarization communications systems
02/02/1988US4723321 Techniques for cross-polarization cancellation in a space diversity radio system
01/1988
01/14/1988WO1988000417A2 Method and installation for digital communication, particularly between and toward moving vehicles
01/05/1988US4717894 Calibration of vector modulators using a scalar detector
09/1987
09/01/1987CA1226347A1 Selective fading protection system
07/1987
07/21/1987CA1224541A1 Circuit for establishing accurate sample timing
07/07/1987US4679227 Ensemble modem structure for imperfect transmission media
07/07/1987CA1223925A1 Cross-polarization interference cancellation arrangement for digital radio channels
06/1987
06/30/1987US4677647 Synchronization of multichannel receiver based on higher quality channels
04/1987
04/14/1987US4658405 Radio communication system
04/01/1987EP0216141A2 Combined cross polarization interference cancellation and intersymbol interference equalization for terrestrial digital radio systems
03/1987
03/19/1987DE3530546A1 Transmission method for a fast and a slow data stream
02/1987
02/17/1987US4644562 Combined cross polarization interference cancellation and intersymbol interference equalization for terrestrial digital radio systems
02/17/1987US4644560 Intranetwork code division multiple access communication system
01/1987
01/27/1987US4639914 Wireless PBX/LAN system with optimum combining
01/13/1987US4637067 Bootstrapping cross-polarization canceler with a noise-blanking limiter
01/06/1987US4635221 Frequency multiplexed convolver communication system
12/1986
12/30/1986US4633484 Receiver unit in radio communication system
12/23/1986US4631734 Cross-polarization canceler/equalizer
12/16/1986CA1215450A1 Method of access control in a communication system
12/04/1986WO1986007223A1 Ensemble modem structure for imperfect transmission media
11/1986
11/26/1986CN86103406A Ensemble modem structure for imperfect transmission media
09/1986
09/23/1986US4613975 Selective fading protection system
08/1986
08/12/1986US4606054 Cross-polarization interference cancellation
06/1986
06/11/1986EP0184383A2 A wireless PBX/LAN system with optimum combining
06/10/1986CN85100039A Digital communication multiplex transmission system for level multiplex
04/1986
04/15/1986US4583217 Method of access control in a communication system using orthogonal functions
03/1986
03/18/1986US4577330 Cross-polarization interference cancellation arrangement for digital radio channels
03/11/1986US4575682 Circuit for establishing accurate sample timing
11/1985
11/07/1985WO1985004996A1 A cross-polarization interference cancellation arrangement for digital radio channels
08/1985
08/27/1985CA1192681A1 Pulse interference cancelling system for spread spectrum signals
07/1985
07/16/1985US4529963 Code expansion generator
07/09/1985CA1190317A1 Primary source with frequency re-utilization
06/1985
06/05/1985EP0143469A2 Receiver unit in radio communication system
04/1985
04/30/1985US4514853 Multiplexed noise code generator utilizing transposed codes
04/16/1985US4511885 Code compressor for multilevel interleaved multiplexed noise codes
03/1985
03/26/1985US4507665 Primary source with frequency re-utilization
01/1985
01/29/1985CA1181817A1 Intermediate frequency slope compensation control arrangements
01/02/1985CA1180390A High power multiplexer for dual polarized frequency reuse earth stations
09/1984
09/18/1984US4472815 Pulse interference cancelling system for spread spectrum signals
09/04/1984CA1173912A1 Process for the demodulation of an amplitude modulated signal and demodulator performing this process
08/1984
08/14/1984US4466134 Intermediate frequency slope compensation control arrangements
08/08/1984EP0115385A2 Radio communication system
08/07/1984US4464745 High dynamic range multiplexing system
05/1984
05/22/1984CA1167926A1 Digital multi-level multi-phase modulation communication system
02/1984
02/29/1984EP0101634A2 Method for access control in a communication system
11/1983
11/15/1983CA1157113A1 Four-port network for separating signals
11/02/1983EP0092907A1 Intermediate frequency slope compensation control arrangements
10/1983
10/25/1983US4412181 Process for the demodulation of an amplitude modulated signal and demodulator performing this process
01/1983
01/18/1983US4369519 Cross polarization compensation system
01/05/1983EP0068940A1 Frequency reuse primary active antenna
11/1982
11/30/1982CA1136711A1 Adaptive cross-polarization interference cancellation arrangements
08/1982
08/31/1982US4347616 Digital multi-level multi-phase modulation communication system
01/1982
01/12/1982US4310813 Cross polarization compensating system
10/1981
10/07/1981EP0037317A1 Process for the demodulation of an amplitude-modulated signal, demodulator for carrying out this process and television system comprising such a demodulator
09/1981
09/15/1981US4290143 Transmission method and apparatus wherein binary data bits are converted into barker words and vice versa
08/1981
08/25/1981US4286283 Transcoder
08/11/1981US4283795 Adaptive cross-polarization interference cancellation arrangements
07/1981
07/28/1981US4281409 Method and apparatus for multiplex binary data communication
04/1981
04/16/1981WO1981001087A1 Adaptive cross-polarization interference cancellation arrangements
04/15/1981EP0026924A1 Adaptive cross-polarization interference cancellation arrangements
08/1980
08/26/1980CA1084592A1 System for compensating cross-polarized waves
06/1980
06/10/1980US4207521 System using carrier burst sequences for detecting interference signals occurring across channels of a radio link including a repeater
04/1980
04/22/1980CA1076248A1 Antenna system with automatic depolarization correction
04/01/1980CA1074870A1 Apparatus for automatically correcting depolarization effects on electro-magnetic waves in radio-frequency connections using a double polarization
01/1980
01/08/1980CA1069589A1 Device for automatically correcting the depolarizing effect of electromagnetic waves
03/1979
03/27/1979US4146893 System for compensating for cross polarization coupling
03/27/1979US4146838 System for detecting by a first pilot and a group of second pilots correlated to the first a frequency and/or phase difference between relayed carriers
01/1979
01/09/1979US4134071 SSMA Data transmission system
08/1978
08/08/1978US4105977 Adaptive undesired signal canceller
05/1978
05/16/1978US4090137 System for compensating cross-polarized waves to attenuate crosstalk
11/1977
11/29/1977US4060808 Antenna system with automatic depolarization correction
05/1977
05/31/1977US4027105 Control system to re-establish the orthogonality of two cross-coupled orthogonally polarized transmitted signals
04/1977
04/26/1977US4020288 System for data transmission through the channels of a frequency division multiplex system
10/1976
10/12/1976US3986123 System for the automatic correction of polarization distortion in multichannel radiocommunication station
10/12/1976US3985968 Multiplex data communications using acoustical surface wave filters
06/1976
06/15/1976US3963990 Interference reduction circuit
03/1976
03/09/1976US3943285 Multiplexed data modem