US Patent No: 8,208,364

Number of patents in Portfolio can not be more than 2000

MIMO system with multiple spatial multiplexing modes

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ALSO PUBLISHED AS: 20040136349
ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

A MIMO system supports multiple spatial multiplexing modes for improved performance and greater flexibility. These modes may include (1) a single-user steered mode that transmits multiple data streams on orthogonal spatial channels to a single receiver, (2) a single-user non-steered mode that transmits multiple data streams from multiple antennas to a single receiver without spatial processing at a transmitter, (3) a multi-user steered mode that transmits multiple data streams simultaneously to multiple receivers with spatial processing at a transmitter, and (4) a multi-user non-steered mode that transmits multiple data streams from multiple antennas (co-located or non co-located) without spatial processing at the transmitter(s) to receiver(s) having multiple antennas. For each set of user terminal(s) selected for data transmission on the downlink and/or uplink, a spatial multiplexing mode is selected for the user terminal set from among the multiple spatial multiplexing modes supported by the system.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
QUALCOMM INCORPORATEDSAN DIEGO, CA7516

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Howard, Steven J Ashland, MA 159 2745
Ketchum, John W Harvard, MA 175 3391
Wallace, Mark S Bedford, MA 169 1934
Walton, J Rodney Carlisle, MA 90 1124

Cited Art

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6,597,682 Channel allocation method for a packet network 64 1999
 
NTT DOCOMO, INC. (1)
7,072,381 Path search method, channel estimation method and communication device 19 2000
 
PENDRAGON WIRELESS LLC (1)
6,868,079 Radio communication system with request re-transmission until acknowledged 22 1999
 
PLESSEY U.K. (1)
4,750,198 Cellular radiotelephone system providing diverse separately-accessible groups of channels 40 1986
 
POLYTRAX INFORMATION TECHNOLOGY AKTIENGESELLSCHAFT (1)
6,956,906 Powerline data communication 13 2001
 
POSITRON ACCESS SOLUTIONS INC. (1)
7,274,734 Iterative waterfiling with explicit bandwidth constraints 17 2004
 
REALTEK SEMICONDUCTOR CORP. (1)
6,222,888 Method and circuit for controlling setup of multichannel system 28 2000
 
RESEARCH IN MOTION LIMITED (1)
7,149,239 Communication system and methods of estimating channel impulse responses therein 31 2002
 
ROCKSTAR BIDCO, LP (1)
7,551,546 Dual-mode shared OFDM methods/transmitters, receivers and systems 46 2003
 
RPX CORPORATION (1)
2004/0252,632 Method and apparatus for multi-user multi-input multi-output transmission 59 2003
 
SANDISK 3D LLC (1)
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SEOUL NATIONAL UNIVERSITY INDUSTRY FOUNDATION (1)
2006/0067,417 Transmission method for OFDM-MIMO communication system 21 2005
 
SI CHUAN HEBEN BIOTIC ENGINEERING CO. LTD. (1)
7,238,508 EPSP synthase highly tolerant to glyphosate 13 2004
 
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SIEMENS MOBILE COMMUNICATIONS S.P.A. (1)
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6,956,813 Radio communication system, radio base-station apparatus, mobile radio-station apparatus, radio zone assignment method, and radio communication method 17 2001
 
TACHYON, INC. (1)
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WISCONSIN ALUMNI RESEARCH FOUNDATION (1)
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XIAM TREA PTE, L.L.C. (1)
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XYROFIN OY (1)
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OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (7)
7,072,410 Multiple access system and method for multibeam digital radio systems 16 2000
6,850,252 Intelligent electronic appliance system and method 750 2000
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Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (1)
8,355,313 MIMO system with multiple spatial multiplexing modes 0 2008
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
8,446,291 Methods and systems for borehole telemetry 0 2012

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