Open AccessRobust beamforming using beam‐to‐reference weighting diagonal loading and Bayesian framework
Author(s) -
Wu Chao,
Guo Yanmeng,
Na Yueyue,
Wang Xiaofei,
Fu Qiang,
Yan Yonghong
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.2859
Subject(s) - weighting , diagonal , eigendecomposition of a matrix , beamforming , algorithm , a weighting , bayesian probability , mathematics , matrix (chemical analysis) , weight , control theory (sociology) , computer science , mathematical optimization , eigenvalues and eigenvectors , artificial intelligence , statistics , physics , materials science , acoustics , geometry , control (management) , quantum mechanics , lie algebra , pure mathematics , composite material
A novel robust diagonal loading (DL) algorithm against steering vector mismatch is proposed. The beam‐to‐reference ratio is estimated first and then used as a weighting factor for variable DL. The Bayesian framework is applied eventually to obtain the weight vector. In contrast to traditional methods, the proposed method achieves good performance without using any optimisation toolboxes or matrix eigendecomposition operations.