Beamformed space time code communication with testing...

Details Beamformed space time code communication with testing... Beamformed space time code communication with testing...

2011-02-15

2011-02-15

Tarcza, Thomas H (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

Reexamination Certificate

active

07889131

ABSTRACT:
An apparatus, logic and method are provided to improve beamformed space time code (STC) wireless communication. A first device comprising a plurality of antennas receives signals at the plurality of antennas transmitted from a first antenna of a second device. A testing spatial signature for a second antenna of the second device is computed based on the signals received at the plurality of antennas of the first device from the first antenna of the second device. Using the testing spatial signature and the signals received at the plurality of antennas of the first device from the first antenna of the second device, beamforming weights are computed to be applied to a space time code signal to be transmitted from the first device to the second device via the plurality of antennas of the first device.

REFERENCES:
patent: 6615024 (2003-09-01), Boros et al.
patent: 6980527 (2005-12-01), Liu et al.
C. Sun et al., Combining beamforming with Alamouti scheme for multiuser MIMO communications, IEEE Vehicular Technology Conference, vol. 2, p. 1415-1419, 2004.
Runhua Chen et al., “Multiuser Space- Time Block Coded MIMO System with Downlink Precoding,” IEEE Communications Society, 2004 IEEE International Conference on Communications, vol. 5, Jun. 20, 2004, pp. 2689-2693.
PCT International Search Report and Written Opinion in counterpart International Application No. PCT/US2008/058164, dated Oct. 23, 2008.

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