非周期扩频系统中基于均匀圆阵的角度和时延的联合估计

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Abstract The uniform circular array is transformed into uniform linear array by the spatial matched filter transformation from element space to beam space. Based on the space-time matched filter output in frequency domain, the joint angle and delay estimation with uniform circular array in aperiodic spreading system is solved with DOA matrix method. The joint estimation algorithm also solved the problem, that the multipath number can not be larger than the element number in conventional spatial processing method. The theoretical analysis and computer simulations demonstrate that the method is an unbiased estimator and its estimation precision is superior to that of the sliding correlator.

Key words： Joint angle and delay estimation Aperiodic spreading system Beam space Phase mode

Received: 16 June 2000

PACS:	TN914.4
	TN911.23

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	Wang Wenjie
	Jiang Bofeng
	Yin Qinye

Cite this article:

Wang Wenjie,Jiang Bofeng,Yin Qinye. Joint angle and delay estimation based on uniform circular array in CDMA system with aperiodic spreading code[J]. , 2002, 24(5): 637-643 .

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http://jeit.ie.ac.cn/EN/ OR http://jeit.ie.ac.cn/EN/Y2002/V24/I5/637