TY - CONF
T1 - Robust beamforming based on wiener filter for circular sensor arrays
AU - Lin, Jincheng
AU - Ma, Xiaochuan
AU - Yan, Shefeng
AU - Shang, Zhigang
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014
Y1 - 2014
N2 - A robust wiener-filer beamformer on the circular sensor arrays (CWFB), which is an efficient and robust method, is proposed in this article. The weighted vector will be solved through an unique way, which is derived from the fact that the noise covariance matrix of circular sensor arrays is a circulant matrix. Using the individual feature, the solution is exchanged to solve the one-dimensional wiener filter. It can be processed efficiently in frequency domain. However, the circular characteristics of the noise covariance matrix can lead to extreme sensitivity to random errors. In this article, by adding regularization coefficient, the robustness of CWFB is to be improved. Simulation results demonstrate the more robust and efficient superiority of the proposed CWFB than the conventional beamformer.
AB - A robust wiener-filer beamformer on the circular sensor arrays (CWFB), which is an efficient and robust method, is proposed in this article. The weighted vector will be solved through an unique way, which is derived from the fact that the noise covariance matrix of circular sensor arrays is a circulant matrix. Using the individual feature, the solution is exchanged to solve the one-dimensional wiener filter. It can be processed efficiently in frequency domain. However, the circular characteristics of the noise covariance matrix can lead to extreme sensitivity to random errors. In this article, by adding regularization coefficient, the robustness of CWFB is to be improved. Simulation results demonstrate the more robust and efficient superiority of the proposed CWFB than the conventional beamformer.
KW - CWFB
KW - Circular sensor arrays
KW - Noise covariance matrix
KW - Weighted vector
KW - Wiener-filter
UR - http://www.scopus.com/inward/record.url?scp=84988241291&partnerID=8YFLogxK
U2 - 10.1109/ICOSP.2014.7015014
DO - 10.1109/ICOSP.2014.7015014
M3 - Paper
AN - SCOPUS:84988241291
SP - 288
EP - 291
T2 - 2014 12th IEEE International Conference on Signal Processing, ICSP 2014
Y2 - 19 October 2014 through 23 October 2014
ER -