DocumentCode :
1117503
Title :
Direction of arrival estimation for uniform circular array based on fourth-order cumulants in the presence of unknown mutual coupling
Author :
Xiang, L. ; Ye, Z. ; Xu, X. ; Chang, C. ; Xu, W. ; Hung, Y.S.
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei
Volume :
2
Issue :
3
fYear :
2008
fDate :
4/1/2008 12:00:00 AM
Firstpage :
281
Lastpage :
287
Abstract :
A direction of arrival (DOA) estimation algorithm in the presence of an unknown mutual coupling is presented for a uniform circular array. This algorithm is based on the fourth-order cumulants, and the DOA of signal sources can be accurately estimated without the need of any calibration source since the coupling is blindly compensated by the inherent mechanism of the proposed method. Because of the use of higher-order statistics, the number of sources that can be coped with may be larger than the number of sensors in the array, and the algorithm is insensitive to Gaussian noise. Comparing with existing calibration methods which use iterative approaches, this algorithm is computationally less expensive since it uses only a one-dimensional search. Validation and performance are illustrated by simulations.
Keywords :
Gaussian noise; array signal processing; direction-of-arrival estimation; higher order statistics; iterative methods; Gaussian noise; direction of arrival estimation; direction of arrival estimation algorithm; fourth-order cumulant; higher-order statistics; iterative approach; mutual coupling; uniform circular array signal processing;
fLanguage :
English
Journal_Title :
Microwaves, Antennas & Propagation, IET
Publisher :
iet
ISSN :
1751-8725
Type :
jour
DOI :
10.1049/iet-map:20070010
Filename :
4480487
Link To Document :
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