Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter

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United States of America Patent

PATENT NO

6351499

SERIAL NO

09464372

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Abstract

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A method of maximizing a communication parameter, such as data capacity, signal quality or throughput of a channel between a transmit unit with M transmit antennas and a receive unit with N receive antennas and a communication system such as a wireless network (including networks with multiple access techniques such as TDMA, FDMA, CDMA, OFDMA) employing the method. The data is first processed to produce parallel spatial-multiplexed streams SM.sub.i, where i=1 . . . k, which are converted or mapped to transmit signals TS.sub.p, where p=1 . . . M, assigned for transmission from the M transmit antennas. Corresponding receive signals RS.sub.j, where j=1 . . . N, are received by the N receive antennas of the receiver and used to assess a quality parameter, such as a statistical signal parameter including SINR, SNR, power level, level crossing rate, level crossing duration of the signal of a predetermined threshold and reception threshold, or a parameter of the data, such as BER or packet error rate. The quality parameter is used to adaptively adjust k as well as other parameters such as coding and mapping to transmit antennas such that the communication parameter of the channel is maximized.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
INTEL CORPORATIONSANTA CLARA, CA27691

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gesbert, David J Mountain View, CA 11 972
Paulraj, Arogyaswami J Stanford, CA 48 2847
Sebastian, Peroor K Mountain View, CA 37 2205
Tellado, Jose Stanford, CA 68 1617

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8565811 Software-defined radio using multi-core processor 29 2009
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8194770 Coded MIMO systems with selective channel inversion applied per eigenmode 10 2002
8218609 Closed-loop rate control for a multi-channel communication system 14 2003
7986742 Pilots for MIMO communication system 42 2003
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8320301 MIMO WLAN system 28 2003
8208364 MIMO system with multiple spatial multiplexing modes 21 2003
8169944 Random access for wireless multiple-access communication systems 14 2003
8170513 Data detection and demodulation for wireless communication systems 18 2003
8134976 Channel calibration for a time division duplexed communication system 18 2003
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8543070 Reduced complexity beam-steered MIMO OFDM system 2 2006
7991065 Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system 8 2006
8290089 Derivation and feedback of transmit steering matrix 8 2007
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8145179 Data detection and demodulation for wireless communication systems 18 2007
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8203978 Multi-mode terminal in a wireless MIMO system 21 2007
9240871 MIMO WLAN system 1 2008
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8483188 MIMO system with multiple spatial multiplexing modes 25 2008
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8462643 MIMO WLAN system 52 2008
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9031097 MIMO system with multiple spatial multiplexing modes 0 2009
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NATIONAL UNIVERSITY OF SINGAPORE (2)
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