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A Bias-Free Adaptive Beamformer with GSC-APA SCIE SCOPUS

Title
A Bias-Free Adaptive Beamformer with GSC-APA
Authors
Han, YKLee, JWLee, HSSong, WJ
Date Issued
2015-06
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Abstract
We propose a novel bias-free adaptive beamformer employing an affine projection algorithm with the optimal regularization parameter. The generalized sidelobe canceller affine projection algorithm suffers from a bias of a weight vectors under the condition of no reference signals for output of an array in the beamforming application. First, we analyze the bias in the algorithm and prove that the bias can be eliminated through a large regularization parameter. However, this causes slow convergence at the initial state, so the regularization parameter should be controlled. Through the optimization of the regularization parameter, the proposed method achieves fast convergence without the bias at the steady-state. Experimental results show that the proposed beamformer not only removes the bias but also achieves both fast convergence and high steady-state output signal-to-interference-plus-noise ratio.
URI
https://oasis.postech.ac.kr/handle/2014.oak/35823
DOI
10.1587/TRANSFUN.E98.A.1295
ISSN
1745-1337
Article Type
Article
Citation
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, vol. E98A, no. 6, page. 1295 - 1299, 2015-06
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송우진SONG, WOO JIN
Dept of Electrical Enginrg
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