US Patent No: 5,282,222

Number of patents in Portfolio can not be more than 2000

Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum

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Abstract

A method for allowing a number of wireless transceivers to exchange information (data, voice or video) with each other. A first frame of information is multiplexed over a number of wideband frequency bands at a first transceiver, and the information transmitted to a second transceiver. The information is received and processed at the second transceiver. The information is differentially encoded using phase shift keying. In addition, after a pre-selected time interval, the first transceiver may transmit again. During the preselected time interval, the second transceiver may exchange information with another transceiver in a time duplex fashion. The processing of the signal at the second transceiver may include estimating the phase differential of the transmitted signal and pre-distorting the transmitted signal. A transceiver includes an encoder for encoding information, a wideband frequency division multiplexer for multiplexing the information onto wideband frequency voice channels, and a local oscillator for upconverting the multiplexed information. The apparatus may include a processor for applying a Fourier transform to the multiplexed information to bring the information into the time domain for transmission.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
WI-LAN INC.OTTAWA523

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fattouche, Michel Calgary, CA 13 761
Zagloul, Hatim 402 - 1st Avenue, N.E., Calgary, Alberta, CA 2 428

Cited Art

Patent Info (Count) # Cites Year
 
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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
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UNIVERSITY OF MASSACHUSETTS (2)
6,049,549 Adaptive media control 112 1997
7,460,514 Adaptive media control 5 2006
 
VECIMA NETWORKS INC. (2)
7,327,795 System and method for wireless communication systems 20 2003
7,327,800 System and method for data detection in wireless communication systems 44 2003
 
WI-LAN INC. (2)
6,192,068 Multicode spread spectrum communications system 59 1996
6,320,897 Multicode spread spectrum communications system 42 1999
 
ADAPTIVE BROADBAND LIMITED (1)
6,324,220 Stabilized precoder for data transmission 14 2000
 
Advanced Digital Television Broadcasting Laboratory (1)
5,818,813 Orthogonal frequency division multiplexing transmission system and transmitter and receiver adapted to the same 67 1996
 
APPLE INC. (1)
7,304,939 Communication using simultaneous orthogonal signals 6 2001
 
AT&T CORP. (1)
6,615,040 Self-configurable wireless systems: spectrum monitoring in a layered configuration 27 1999
 
AT&T MOBILITY II LLC (1)
7,983,217 Method for frequency division duplex communications 2 2008
 
BENQ CORPORATION (1)
6,879,920 Method and system for estimating movement speed of mobile unit 1 2003
 
BRITISH BROADCASTING CORPORATION (1)
5,838,734 Compensation for local oscillator errors in an OFDM receiver 20 1996
 
BRUCKNER, CLARENCE (1)
6,650,616 Transmission security for wireless communications 17 2002
 
CIENA CORPORATION (1)
7,020,226 I/Q distortion compensation for the reception of OFDM signals 32 2002
 
DIGITAL RADIO EXPRESS, INC. (1)
5,966,401 RF simplex spread spectrum receiver and method with symbol deinterleaving prior to bit estimating 29 1995
 
DIMA Communications LLC (1)
7,962,090 Method and apparatus for satellite digital audio 1 2009
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (1)
6,549,566 Bandwidth reduced multi carrier wireless transceiver and method thereof 7 1999
 
ENOVSYS LLC (1)
8,060,109 Authorized location reporting mobile communication system 1 2007
 
ERICSSON INC. (1)
5,912,876 Method and apparatus for channel estimation 33 1997
 
FRANCE TELECOM (1)
6,282,167 OFDM signal organized so as to simplify reception 15 1997
 
FUJITZU COMPOUND SEMICONDUCTOR, INC. (1)
5,661,434 High efficiency multiple power level amplifier circuit 106 1995
 
HITACHI, LTD. (1)
7,394,789 Handoff control method, base station controller, and base transceiver subsystem 6 2005
 
InterDigital Corporation (1)
7,602,749 Fast acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system 0 2002
 
LG ELECTRONICS INC. (1)
6,396,803 Modulation methods and structures for wireless communication systems and transceivers 16 2001
 
LINEX TECHNOLOGIES, INC. OF DE (1)
RE43812 Multiple-input multiple-output (MIMO) spread-spectrum system and method 0 2011
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
6,341,123 Digital audio broadcasting receiver 13 1998
 
NEC CORPORATION (1)
6,252,914 Radio communication system 8 1999
 
NOKIA SIEMENS NETWORKS OY (1)
6,289,006 Method and apparatus for changing carrier frequencies in each time slot in a telecommunications process 5 1997
 
NOKIA TELECOMMUNICATIONS OY (1)
5,828,650 Combined modulation--and multiple access method for radio signals 9 1996
 
QLT INC. (1)
6,510,175 In-band on-channel digital broadcasting 14 1998
 
RAFAEL-ARMAMENT DEVELOPMENT AUTHORITY LTD. (1)
5,619,493 Spread-spectrum, frequency-hopping radio telephone system with voice activation 33 1996
 
REMEC BROADBAND WIRELESS HOLDINGS, INC. (1)
6,785,342 Nonlinear pre-distortion modulator and long loop control 48 2000
 
RESEARCH IN MOTION LIMITED (1)
5,828,695 QAM system in which the constellation is modified in accordance with channel quality 135 1994
 
SAMSUNG THOMSON-CSF CO., LTD. (1)
6,810,020 Apparatus and method for measuring bit error rate in an OFDM communication system 11 2001
 
SANYO SEMICONDUCTOR CORPORATION (1)
6,433,742 Diversity antenna structure for wireless communications 17 2000
 
SHERWOOD PARTNERS, INC. (1)
6,512,737 Stacked carrier discrete multiple tone communication system 70 2000
 
SKKY INCORPORATED (1)
8,423,427 Media delivery platform 0 2009
 
SONY INTERNATIONAL (EUROPE) GMBH (1)
6,535,501 Transmission method and transmission apparatus for transmitting signals on the basis of a OFDM/TDMA-system in a GSM/system 22 1998
 
SPRINT SPECTRUM L.P. (1)
8,195,188 Location reporting satellite paging system with optional blocking of location reporting 0 2003
 
TELEDIFFUSION DE FRANCE (1)
6,810,006 OFDM signal organized so as to simplify reception 9 2001
 
TEXAS INSTRUMENTS INCORPORATED (1)
7,113,499 Wireless communication 16 2001
 
THE UNIVERSITY OF HONG KONG (1)
7,197,335 Multi-antenna access point architecture and methods 3 2004
 
TREBLE INVESTMENTS LIMITED LIABILITY COMPANY (1)
5,585,850 Adaptive distribution system for transmitting wideband video data over narrowband multichannel wireless communication system 103 1994
 
UNIQUE BROADBAND SYSTEMS LTD. (1)
6,968,017 Low phase noise frequency converter 11 2001
 
UNIVERSITAT BERN (1)
7,620,378 Method and system for frequency up-conversion with modulation embodiments 25 2007
 
WJ COMMUNICATIONS, INC. (1)
6,603,806 Method and apparatus for high data rate wireless communications over wavefield spaces 11 2001
 
XILINX, INC. (1)
7,583,725 Dynamically reconfigurable adaptive communication device and system 1 2005
 
Other [Check patent profile for assignment information] (45)
5,825,807 System and method for multiplexing a spread spectrum communication system 129 1995
7,548,787 Medical diagnostic and communication system 37 2005
7,561,881 Air based emergency monitor, multimode communication, control and position finder system 37 2006
7,558,574 Video, voice and location finder wireless communication system 42 2007
7,720,488 RFID wireless 2G, 3G, 4G internet systems including Wi-Fi, Wi-Max, OFDM, CDMA, TDMA, GSM 33 2007
7,593,733 Fingerprint identification, location finder communication system 35 2007
7,603,125 Barcode reader, location finder, GPS, navigational interactive TDMA, GSM, GPRS, EDGE, CDMA, OFDM, Wi-Fi wireless and wired system 38 2007
7,769,386 MIMO polar, non-quadrature, cross-correlated quadrature GSM, TDMA, spread spectrum, CDMA, OFDM, OFDMA and bluetooth systems 27 2007
7,978,774 Internet GSM, CDMA, OFDM, Wi-Fi wireless and wired multimode systems 15 2007
7,711,368 VoIP multimode WLAN, Wi-Fi, GSM, EDGE, TDMA, spread spectrum, CDMA systems 32 2007
7,627,320 Voice, location finder, modulation format selectable Wi-Fi, cellular mobile systems 36 2007
8,259,822 Polar and quadrature modulated cellular, WiFi, WiLAN, satellite, mobile, communication and position finder systems 0 2007
7,904,041 Remote control, cellular, WiFi, WiLAN, mobile communication and position finder systems 18 2007
8,311,509 Detection, communication and control in multimode cellular, TDMA, GSM, spread spectrum, CDMA, OFDM WiLAN and WiFi systems 0 2007
7,630,717 Touch screen, location finder, GSM, EDGE, CDMA cellular and OFDM, Wi-Fi system 35 2008
7,787,882 Touch screen generated processed signals in multiple communication systems and networks 26 2008
7,937,093 Cellular and internet mobile systems and networks 14 2008
7,693,229 Transmission of signals in cellular systems and in mobile networks 33 2008
7,738,608 Equalized modulation demodulation (modem) format selectable multi antenna system 30 2008
7,894,810 Automobile wireless door opener and ignition starter by cellular device 17 2008
7,783,291 Touch screen multiple input multiple output (MIMO) multimode wireless communication 26 2008
8,190,193 Bluetooth, Wi-Fi, 3G quadrature and non-quadrature modulation methods 1 2008
7,937,094 Wired and mobile wi-fi networks, cellular, GPS and other position finding systems 14 2008
7,899,491 Cross-correlated quadrature modulated spread spectrum, OFDM and position finder system 16 2008
7,917,103 WLAN and wired mobile communication and location finding system 17 2008
7,949,405 Cardiac stimulation control and communication system 14 2009
8,098,753 Infrared, touch screen, W-CDMA, GSM, GPS camera phone 7 2009
7,809,374 Video mobile communication system 27 2009
7,805,143 Mobile video internet, cellular and location finder system 24 2009
7,725,114 Wi-Fi, GPS and MIMO systems 46 2009
7,885,650 Adaptive coding and modulation with MIMO wireless and wired communication 16 2010
7,877,110 Cascaded 4G, 3G, 2G and other systems 19 2010
7,983,678 3G and Wi-Fi connected mobile systems 14 2010
8,055,269 Time constrained signal MIMO wireless and wired communication method 8 2011
8,150,453 Cellular and TV interactive mobile wired and wireless systems 2 2011
8,085,705 Web mobile systems 7 2011
8,200,243 Mobile television (TV), internet, cellular systems and Wi-Fi networks 4 2011
8,189,703 Television mobile internet system 1 2011
8,112,110 Phone video mobile internet television (TV) and cellular system 2 2011
8,259,832 QAM and GMSK modulation methods 0 2011
8,185,069 Wired and wireless 4G and 3G cellular, mobile and RFID systems 1 2011
8,311,140 Infrared, CDMA and OFDM signal transmission methods 0 2012
8,190,143 TV internet and cellular mobile communication 1 2012
8,306,525 UMTS wired and wireless mobile 2G, 3G, 4G, 5G and other new generations of cellular, mobile 0 2012
8,351,925 Digital television (TV), ship and other water based interactive communication methods 0 2012