多径环境中多用户波束形成与DOA估计

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Abstract In this paper beamforming and DOA estimation for multiuser are discussed in multipath circumstance. Decorrelating detector is adopted to detect multiuser. CSS (Cyclic Spatial Smoothing) algorithm is presented. The algorithm with spatial smoothing can keep array weight dimension unchanged. Its theoretical foundation is that cyclic propagation of the sampling signal covariance inverse matrix is equivalent to averaging of the covariance matrix. The estimated spatial signature is adopted to construct the covariance matrix for high resolution DOA estimation. The simulation results show that CSS has better performance for multiuser beamforming.

Key words： Multipath Decorrelating detector Beamforming DOA estimation Spatial smoothing

Received: 19 March 2001

PACS:

TN911.23

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	An Yi
	Lu Xin
	Gao Benqing

Cite this article:

An Yi,Lu Xin,Gao Benqing. Beamforming and DOA estimation for multiuser in multipath circumstance[J]. , 2002, 24(11): 1499-1505 .

URL:

http://jeit.ie.ac.cn/EN/ OR http://jeit.ie.ac.cn/EN/Y2002/V24/I11/1499