Patents
Sitemap › H04 - Electric communication technique › H04J - Multiplex communication › H04J 1 - Frequency-division multiplex systems
Patents for H04J 1 - Frequency-division multiplex systems (15,293)
10/1998
10/08/1998WO1998044657A1 Method for tdma transmission on a plurality of carrier frequencies, corresponding signal and receiver
10/08/1998CA2285323A1 Bandwidth management in a heterogenous wireless personal communications system
10/08/1998CA2256554A1 Method for tdma transmission on a plurality of carrier frequencies, corresponding signal and receiver
10/07/1998EP0868795A1 Method and apparatus for integrating video, voice and computer data traffic in a single, conferencing system using existing telephone and catv connections
10/07/1998CN1195442A Pulse shaping for multicarrier modulation
10/07/1998CN1195437A Dynamic allocation of bandwidth for transmission of audio signals and video signal
10/06/1998US5819000 Magnetic recording and playback apparatus
10/06/1998CA2178960C Communication system resource allocation method
10/01/1998WO1998043430A1 Signal generation and broadcasting
10/01/1998WO1998043377A1 Hierarchical resource management method, system, base station, head-end unit, and subscriber unit for variable resource size communication systems
10/01/1998WO1998043373A1 Systems and methods of channel coding and inverse-multiplexing for multi-carrier cdma systems
10/01/1998CA2284016A1 Signal generation and broadcasting
09/1998
09/24/1998WO1998042092A2 Improved channel spacing for distortion reduction
09/23/1998EP0866629A1 One-to-many-points radio transmission system
09/23/1998EP0866577A2 Band insertion and precancellation technique for simultaneous communications of analog frequency-modulated and digitally modulated signals
09/22/1998US5812947 Cellular/satellite communications systems with improved frequency re-use
09/22/1998US5812600 Method and apparatus for mitigating distortion effects in the determination of signal usability
09/16/1998CN1193441A Method for the common transmission of digital and analogue modulated radio broad casting and/or television broadcasting signals
09/15/1998US5809405 Transmitter/receiver appartus with reduced insertion loss comprising a single switching means and a plurality of antenna duplexers each duplexer having a different frequency band
09/15/1998US5809067 Wireless packet data communications modem and method of use therein
09/11/1998WO1998039939A2 Method and system for autonomously allocating frequencies to a radio system sharing frequencies with an overlapping macro radio system
09/09/1998CN1192618A Multi-topology network communication link interface
09/08/1998US5805633 Method and apparatus for frequency planning in a multi-system cellular communication network
09/03/1998WO1998038807A2 Method and apparatus for analyzing a composite carrier signal
09/01/1998US5802450 Method for initiating a radio transmission apparatus
09/01/1998US5802117 Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system
08/1998
08/27/1998WO1998037706A2 Method and apparatus for allocating spectral resources in a wireless communication system
08/13/1998WO1998035464A1 Digital device and method for filtering, decimation and transposition into distributed baseband, and corresponding digital modulator
08/13/1998WO1998035463A2 Method for frequency division duplex communications
08/13/1998CA2250820A1 Digital device and method for filtering, decimation and transposition into distributed baseband, and corresponding digital modulator
08/12/1998EP0858179A1 Digital extraction and transposition to baseband of FDM channel
08/12/1998EP0858157A2 Method for processing bandpass signals delivered at intermediate frequency
08/12/1998CN1190296A Method and apparatus for bandwidth reuse in communication network
08/05/1998EP0856962A2 Digital audio broadcast receiver
08/05/1998EP0856908A1 Antenna beamforming device for channel multiplex systems
08/04/1998US5790606 Joint demodulation using spatial maximum likelihood
08/04/1998US5790555 Signal multiplexer and multiplexing method
08/04/1998US5790549 Subtractive multicarrier CDMA access methods and systems
08/04/1998US5790523 Testing facility for a broadband communications system
08/04/1998US5790516 Pulse shaping for data transmission in an orthogonal frequency division multiplexed system
08/03/1998CA2226334A1 Unit for forming a beam of multiplex channels
07/1998
07/29/1998EP0855840A1 Digital video signal MPEG2 and time division multiplexer and multiplexed digital signal demultiplexer
07/29/1998CN1189266A Method, device, DSP and modem for efficient echo canceler phase roll tracking
07/28/1998CA2100901C Frequency-multiplexed cellular telephone cell site base station and method of operating the same
07/28/1998CA2092495C Communication system
07/22/1998EP0853853A1 Multicarrier modulation
07/21/1998US5784597 Communications network system including acknowledgement indicating successful receipt of request for reserved communication slots and start time for said reserved communication slots
07/16/1998WO1998015083A3 Signal transformation method and apparatus
07/14/1998US5781335 Circuit arrangement for optical frequency conversion
07/14/1998CA2117920C A multi-channel digital transmitter and receiver
07/09/1998DE19756565A1 Communication network interface with several nodes and transmission path
07/08/1998EP0852087A2 Method for the common transmission of digital and analogue modulated radio broadcasting and/ or television broadcasting signals
07/02/1998WO1998028868A1 Method and apparatus for variably allocating upstream and downstream communication spectra
07/02/1998CA2274715A1 Method and apparatus for variably allocating upstream and downstream communication spectra
07/01/1998EP0507799B1 Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links
06/1998
06/25/1998WO1998027665A1 Apparatus and method for communicating voice and data between a customer premises and a central office
06/25/1998WO1998027645A1 Intermodulation compensation in multi-channel amplifiers
06/25/1998DE19756564A1 Communication network with automatic nodal configuration
06/25/1998CA2274914A1 Intermodulation compensation in multi-channel amplifiers
06/25/1998CA2272576A1 Apparatus and method for communicating voice and data between a customer premises and a central office
06/24/1998EP0848889A1 Method and apparatus for frequency planning in a multi-system cellular communications network
06/24/1998CN1185878A Method for assigning communication resources in a communication system
06/18/1998WO1998019465A3 Method of combining several signals, and base station
06/17/1998EP0847643A1 Method for simplifying the demodulation in multiple carrier transmission system
06/16/1998US5768280 Two-way broadband CATV communication network protocol and monitoring technology
06/16/1998US5768000 Wavelength multiplexing optical transmission device
06/10/1998EP0847214A2 Optical divider
06/10/1998EP0847159A2 Method for apparatus for bandwidth reuse in a communication network
06/10/1998EP0847151A2 All optical RF signal channelizer
06/04/1998WO1998024201A1 Method and device for mixed analog and digital broadcast of a radio programme broadcast by the same transmitter
06/03/1998EP0845176A1 Dynamic allocation of bandwidth for transmission of audio signals and a video signal
06/03/1998CN1183865A Method and equipment for multirate coding and detection in multiple access mobile communication system
05/1998
05/27/1998EP0844791A2 Active interface for an access network
05/26/1998US5758266 Multiple frequency communication device
05/26/1998US5757794 Digital down converter and method
05/26/1998US5757774 Network traffic protection system
05/26/1998US5757231 Feed-forward amplifying device and base station with feed-forward amplifying device
05/22/1998WO1998021861A1 Prototype signal construction for multicarrier transmission
05/20/1998EP0843430A2 Technique for simultaneous transmission of analog frequency-modulated and digitally modulated signals using postcanceling method
05/20/1998CN1182488A Improved periodic wireless data broadcast
05/20/1998CA2218182A1 Active demarcation point of an access network
05/19/1998US5754650 Simultaneous multichannel television access control system and method
05/14/1998WO1998020630A1 Direct satellite direct broadcast system
05/14/1998DE19720019A1 Linearer Leistungsverstärker und Verfahren zu seinem Betrieb Linear power amplifier and method for its operation
05/14/1998CA2270134A1 Digital satellite direct broadcast system
05/13/1998EP0841762A2 Communication method in a multi-carrier format
05/13/1998CN1181851A Joint demodulation using spatial maximum likelihood
05/12/1998US5751250 Low distortion power sharing amplifier network
05/07/1998WO1998019465A2 Method of combining several signals, and base station
05/06/1998EP0839423A1 Pulse shaping for multicarrier modulation
05/05/1998US5748677 Reference signal communication method and system
05/05/1998US5748675 Vehicle communications network with improved current sourcing
04/1998
04/28/1998US5745846 Channelized apparatus for equalizing carrier powers of multicarrier signal
04/28/1998US5745613 Wavelength-division multiplexing optical communication apparatus and method therefor
04/28/1998US5745506 Error correcting decoder
04/23/1998WO1998010542A3 Transmitting and receiving method and radio system
04/22/1998EP0594755B1 Power distribution line communication system for reducing effects of signal cancellation
04/15/1998EP0835565A1 Group modulator for a broadband communications system
04/15/1998CN1179252A Channel quality management in a cable telephony system
04/15/1998CN1179037A Communication method, emission device, emission method, receiving device and receiving method
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