Journal of Systems Engineering and Electronics ›› 2010, Vol. 32 ›› Issue (8): 1596-1599.doi: 10.3969/j.issn.1001-506X.2010.08.09

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DOA estimation method for MIMO array based on non-circular signals

SHI Wen-tao，HUANG Jian-guo，HOU Yun-shan   

  1. (Coll. of Marine, Northwestern Polytechnical Univ., Xi’an 710072, China)
  • Online:2010-08-13 Published:2010-01-03

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Abstract:

An improved MUSIC method for non-circular sources in multiple-input multiple-output （MIMO）array signal model is proposed to estimate the directions of arrival. The proposed method exploits the characteristics of non-circular sources to construct a conjugate symmetric Toeplitz matrix from received data vectors so as to form a pseudo covariance matrix, then the source directions of arrival are estimated by techniques similar to the MUSIC method. Simulation results show that the proposed method can resolve multi-targets by using only one or a few snapshots in the MIMO array. And its performance is better than the traditional MIMO MUSIC method.

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