Kwan Hyeong Lee
ABSTRACT
This paper studied for direction of arrival estimation to use MUSIC algorithm and optimum adaptive beamforming algorithms in a coherent interference environment. Proposed method of this paper not increase the computation al complexity of MUSIC algorithm and adaptive beamforming to compare classical subspace techniques. The proposeed method is combined the recentely updated weight algorithm with LCMV beamforming algorithm in adaptive array system for direction of arrival estimation of desried signal. It has great potential in case of mobile wireless system where coherent and co-channel multipath interference is a major problem. The proposed method can be used in conjunction with MUSIC algorithm to provide an initialization for the weight value method to get a more accurate direction of arrival estimation. Through simulation, we compare the LCMV method with classical direction of arrival method based on MUSIC algorithm. We show that the propose method has achieve good resolution performance better than classical direction of arrival estimation algorithm.
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Index Terms
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