Fast communication: An efficient DOA estimation method in multipath environment

Authors:
Yufeng Zhang;Zhongfu Ye;Chao Liu
Affiliations:
Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China (USTC), Hefei, Anhui 230027, PR China;Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China (USTC), Hefei, Anhui 230027, PR China;Institute of Statistical Signal Processing, Department of Electronic Engineering and Information Science, University of Science and Technology of China (USTC), Hefei, Anhui 230027, PR China
Venue:
Signal Processing
Year:
2010

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Abstract

An efficient direction of arrival (DOA) estimation method is proposed with uniform linear array (ULA) in multipath environment. By applying a transformation, we can convert a constructed complex matrix to a real one, and then utilize the real matrix combined with our proposed criterion to estimate the DOAs of uncorrelated signals. Afterwards, the contributions of uncorrelated signals are eliminated, and then several new matrices without the information of uncorrelated signals are constructed to resolve the remaining coherent signals. The proposed estimation method overcomes the shortcomings of the existing methods and has satisfactory performance. Simulation results confirm the theoretical analysis and show the effectiveness of the proposed method.