Low complexity blind beamforming weight estimation

Details Low complexity blind beamforming weight estimation Low complexity blind beamforming weight estimation

2008-08-01

2010-11-02

Phan, Dao L (Department: 3662)

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

Directive

Including a steerable array

C342S377000

Reexamination Certificate

active

07825856

ABSTRACT:
Techniques are provided to compute beamforming weights at a communication device, e.g., a first communication device, based on transmissions received at a plurality of antennas from another communication device, e.g., a second communication device. A plurality of transmissions are received at the plurality of antennas of the first communication device from the second communication device. A covariance matrix associated with reception of a plurality of transmissions at the plurality of antennas of the first communication device is computed. Corresponding elements (e.g., all the rows or all the columns) of the covariance matrix are combined to produce a weighted channel signature vector. A receive beamforming weight vector is computed from the weighted channel signature vector.

REFERENCES:
patent: 2004/0146024 (2004-07-01), Li et al.
patent: 2005/0157776 (2005-07-01), Ryu
patent: 2009/0004988 (2009-01-01), Jin et al.
patent: 2009/0015472 (2009-01-01), Lozano
patent: 2007136434 (2007-11-01), None
Choi, Jinho, “Beamforming for the Multiuser Detection with Decorrelator in Synchronus CDMA Systems: Approaches and Performance Analysis,” Signal Processing, Elsevier Science Publishers B.V. Amterdam, NL, vol. 60, No. 2, Jul. 1, 1997, pp. 195-211.
International Search Report and Written Opinion dated Mar. 27, 2009 cited in PCT/US2008/072767.

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