Patents
Patents for H04J 1 - Frequency-division multiplex systems (15,293)
07/2000
07/04/2000US6084922 Waiting circuit
07/04/2000US6084890 Method and apparatus for combining carrier signals
06/2000
06/29/2000WO2000038349A1 Mobile communication system and method of operating the same having compressed mode operation
06/29/2000CA2352096A1 Mobile communication system and method of operating the same having compressed mode operation
06/28/2000EP1013043A1 Adaptive bit allocation for variable bandwidth multicarrier communication
06/28/2000EP1013042A1 Prototype signal construction for multicarrier transmission
06/28/2000EP1012962A1 Multi-carrier transmitting apparatus and method
06/28/2000CN1258403A Method and transmitter device for transmitting data symbols from user signals via radio interface of mobile communication system
06/22/2000WO2000036776A1 Transmitting method and transmitting device
06/22/2000CA2320892A1 Communication method and communication system
06/21/2000EP1011282A2 Base station apparatus and transmission branch selection method
06/21/2000EP1011215A2 Optical communication system combining both baseband and passband signals
06/21/2000EP1011192A2 A linear amplifier arrangement
06/21/2000CN1257361A Base station installation and transmitting branch selection method
06/20/2000US6078594 Protocol and procedure for automated channel change in an MPEG-2 compliant datastream
06/20/2000US6078412 Optical transmitter and optical transmission system using the same
06/20/2000CA2157310C Method and apparatus for processing multicarrier signals
06/16/2000CA2291917A1 Optical communication system combining both baseband and passband signals
06/13/2000US6075813 Band insertion and precancellation technique for simultaneous communication of analog frequency modulated and digitally modulated signals
06/13/2000US6075769 Method and apparatus for network flow control
06/13/2000US6075768 Fair bandwidth sharing for video traffic sources using distributed feedback control
06/13/2000US6075633 Light transmission system
06/06/2000US6072779 Adaptive allocation for variable bandwidth multicarrier communication
06/06/2000US6072363 Facility for combining and amplifying two broadband signals
06/02/2000WO2000008864A3 Transmitter of multiple frequency radio communication system
05/2000
05/31/2000EP1005185A2 Receiver for receiving frequency modulated (FM) transmissions, comprising supplementary information transmitted on a subcarrier
05/31/2000CN1053074C Independent sideband-frequency-modulation double modulation multiplex communication system
05/30/2000US6070064 Information receiving system and a control method thereof
05/24/2000CN1254476A Signal generation and broadcasting
05/23/2000US6067177 Method for sub-carrier multiplexed optical signal transmission and apparatus for same
05/18/2000WO2000028712A2 Cable modem system
05/18/2000WO2000010261A3 Changing a faulty radio channel
05/17/2000EP1000490A1 Methods and apparatus for joint demodulation of adjacent channel signals in digital communications systems
05/17/2000EP1000489A1 Methods and apparatus for canceling adjacent channel signals in digital communications systems
05/16/2000US6064664 Base-band interleaver for code division multiple access mobile telecommunication system
05/16/2000CA2182879C Method and apparatus for mitigating interference in a communication system
05/09/2000US6061568 Method and apparatus for mitigating intermodulation effects in multiple-signal transmission systems
05/09/2000US6061406 Multichannel time shared demodulator and method
05/09/2000US6061392 Apparatus and method for communicating voice and data between a customer premises and a central office
05/09/2000CA2177786C Communication system with repeatedly allocated channel id numbers
05/03/2000EP0997012A1 Wireless telecommunications system with a cdma, fdma and tdma multiple access component, especially a "jd-cdma" telecommunications system with hybrid multiple access techniques
05/03/2000CN1251957A Method and apparatus for bidirectional data exchange on low and middle voltage power lines
04/2000
04/27/2000WO2000024125A1 Odd-transform fast convolution
04/26/2000EP0996225A1 Amplifier with feedforward loops for rejecting non-linear distortion
04/26/2000EP0995267A2 Multiple mode direct conversion receiver
04/25/2000US6055225 Ring architecture for quad port bypass circuits
04/25/2000CA2143593C Optical frequency translator
04/19/2000EP0993708A1 Method and apparatus for selecting a resource in a communication system with resources having unbalanced load capacity
04/19/2000EP0868795A4 Method and apparatus for integrating video, voice and computer data traffic in a single, conferencing system using existing telephone and catv connections
04/18/2000US6052362 Ethernet repeater data path loopback
04/12/2000EP0993136A1 Transmitter
04/12/2000EP0797892B1 Method of terrestrially transmitting digital signals
04/12/2000CN1250256A Destination relative code using for discreting multitone modulation
04/12/2000CN1051416C A method and apparatus for determining signal usability
04/11/2000US6049551 Method and apparatus for dynamic allocation of transmission bandwidth resources and for transmission of multiple audio signals with a video signal
04/11/2000US6049529 Integration of a path verification message within a signal
04/05/2000EP0991215A1 Non-periodic modular system for retransmission with digital multi-channel
04/05/2000EP0990334A1 Method for transferring data with a plurality of non-equidistant frequency bands
04/05/2000EP0990329A1 Metropolitan wide area network
04/05/2000EP0990311A1 ACTIVATION OF MULTIPLE xDSL MODEMS WITH IMPLICIT CHANNEL PROBE
04/05/2000CN1249887A Method and system for autonomously allocating frequencies to radio system sharing frequencies with overlapping macro radio system
03/2000
03/30/2000WO2000018142A2 Apparatus and method of searching for pn sequence phase in multi-carrier cdma mobile communication system
03/30/2000WO2000018051A1 Method and apparatus for multiple access communication
03/30/2000WO2000018002A1 Multi-carrier transmitting apparatus and method
03/28/2000US6044090 Method and apparatus for channel management in a communication system
03/22/2000EP0987847A2 Communication network for the distribution of television broadcast signals in a first frequency range and for the transmission of telephone signals in a second frequency range
03/22/2000EP0775409A4 Nonlinear digital communications system
03/22/2000CN1248371A Method and apparatus for analyzing composite carrier signal
03/22/2000CN1248131A TV program broadcasting system
03/15/2000EP0986207A2 Transmission of a subchannel, using a pilot signal
03/15/2000EP0985275A1 Method and apparatus for reserving resources of one or more multiple access communication channels
03/15/2000EP0895683B1 System for radio transmission of digital signals between a plurality of subscriber stations and a base station
03/08/2000EP0984579A1 Transmitting/receiving device and transmitting/receiving method
03/08/2000EP0983707A2 Communication network with improved access protocol
03/08/2000EP0983652A2 Bandwidth management in a heterogenous wireless personal communications system
03/08/2000EP0890227B1 Point-multipoint radio transmission system
03/07/2000US6034965 Multi-stream associative memory architecture for computer telephony
03/07/2000CA2166229C Demodulator control system and a receiver capable of quickly acquiring a desired carrier wave
03/02/2000WO2000011898A1 Multiple frequency allocation radio frequency device and method
03/02/2000WO2000011823A1 Stacked-carrier discrete multiple tone communication technology
03/02/2000CA2340716A1 Stacked-carrier discrete multiple tone communication technology
03/01/2000CN1246220A Intermodulation compensation in multi-channel amplifiers
02/2000
02/29/2000US6031823 Vehicle communications transceiver with loop-back diagnostic mode
02/24/2000WO2000010261A2 Changing a faulty radio channel
02/24/2000DE19836576A1 Radio channel change method especially for mobile radio system
02/23/2000EP0981222A2 Destination dependent coding for discrete multi-tone modulation
02/22/2000US6029052 Multiple-mode direct conversion receiver
02/22/2000US6028888 Single-channel and multi-channel coherent demodulation devices with no pilot signal, and corresponding receiving system using a plurality of diversity paths
02/22/2000US6028850 Wireless transceiver and frequency plan
02/22/2000US6028838 Navigation apparatus
02/17/2000WO2000008864A2 Transmitter of multiple frequency radio communication system
02/16/2000EP0979563A1 Secondary channel for radio frequency communications
02/10/2000WO2000007399A1 Apparatus, method of and system for improving capacity in a communications network
02/09/2000EP0978999A2 Television program broadcasting system
02/08/2000US6023248 Multiplexed channel beam forming unit
02/02/2000EP0976210A2 Unified access platform
02/02/2000CN1243365A 码分多址接收装置和码分多址通信方法 CDMA receiver and code division multiple access communication method
01/2000
01/26/2000EP0975097A2 Method and device for bi-directional data exchange over low and medium voltage electric power lines
01/26/2000EP0974232A2 Data transmission method, reception method, and receiver
01/23/2000CA2277741A1 Method and device for bi-directional data exchange over low and medium voltage electric power lines