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DOA Estimation Based on Sparse Signal Recovery Utilizing Weighted l_{1} -Norm Penalty

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3 Author(s)
Xu Xu ; Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China ; Xiaohan Wei ; Zhongfu Ye

In this letter, a new DOA estimation method based on sparse signal recovery is proposed. We utilize the Capon spectrum to design a weighted l1-norm penalty in order to further enforce the sparsity and approximate the original l0-norm. A theoretical guidance for choosing a proper regularization parameter is also presented according to the dual form of the original problem. Simulation results demonstrate the effectiveness and efficiency of the proposed method.

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Signal Processing Letters, IEEE  (Volume:19 ,  Issue: 3 )