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IEICE TRANSACTIONS on Fundamentals

A Novel Robust Adaptive Beamforming Algorithm Based on Total Least Squares and Compressed Sensing

Di YAO, Xin ZHANG, Qiang YANG, Weibo DENG

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Summary :

An improved beamformer, which uses joint estimation of the reconstructed interference-plus-noise (IPN) covariance matrix and array steering vector (ASV), is proposed. It can mitigate the problem of performance degradation in situations where the desired signal exists in the sample covariance matrix and the steering vector pointing has large errors. In the proposed method, the covariance matrix is reconstructed by weighted sum of the exterior products of the interferences' ASV and their individual power to reject the desired signal component, the coefficients of which can be accurately estimated by the compressed sensing (CS) and total least squares (TLS) techniques. Moreover, according to the theorem of sequential vector space projection, the actual ASV is estimated from an intersection of two subspaces by applying the alternating projection algorithm. Simulation results are provided to demonstrate the performance of the proposed beamformer, which is clearly better than the existing robust adaptive beamformers.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E100-A No.12 pp.3049-3053
Publication Date
2017/12/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E100.A.3049
Type of Manuscript
LETTER
Category
Digital Signal Processing

Authors

Di YAO
  Harbin Institute of Technology
Xin ZHANG
  Harbin Institute of Technology
Qiang YANG
  Harbin Institute of Technology
Weibo DENG
  Harbin Institute of Technology

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