Null Space Projection Based Adaptive Beamforming in the Presence of Array Imperfections

Yang-Ho CHOI  

IEICE TRANSACTIONS on Communications   Vol.E92-B   No.8   pp.2762-2765
Publication Date: 2009/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.2762
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
adaptive beamforming,  random steering errors,  interference subspace,  

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This letter presents an adaptive beamformer robust to random steering errors, based on the projection of received signals onto the orthogonal complement of the interference subspace. In the presence of random steering errors, to prevent the suppression of the desired signal, the proposed beamformer effectively finds basis vectors for the estimation of the interference subspace.