Robust adaptive beamforming using beam‐space steering vector estimation. Issue 19 (1st September 2013)

• Record Type: Journal Article
• Authors: Yang, T.; Su, T.; Zhu, W.T.; Zhang, L.
• Is Part Of: Electronics letters. Volume 49:Issue 19(2013)
• Page Start: 1201
• Page End: 1203
• Publication Date: 2013-09-01
• Subjects: adaptive signal processing -- array signal processing -- beam steering -- concave programming -- covariance matrices -- quadratic programming -- signal sampling; robust adaptive beamforming -- beam space steering vector estimation -- array steering vector -- spatial sector -- beam space transformation matrix -- sampling covariance matrix -- nonconvex quadratically constrained quadratic optimisation problem; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.1714
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : To solve the problem of performance degradation owing to imprecise knowledge of the array steering vector and inaccurate estimation of the sample covariance matrix, a novel algorithm based on beam‐space steering vector estimation for robust adaptive beamforming is presented. By using the complementary set of the spatial sector in which the actual steering vector lies, a beam‐space transformation matrix can be constructed to remove the signal of interest from the sampling covariance matrix. The beam‐space steering vector is estimated by solving a non‐convex quadratically constrained quadratic optimisation problem. The effectiveness and robustness of the proposed algorithm is verified by the simulations.