%0 Journal Article
%T Study on Interference Suppression for LCMV Adaptive Array in Coherent Environment<br>相干环境下LCMV自适应阵列抗干扰问题研究
%A Zhou Wei
%A Zhang De-min
%A Wu Bo
%A Zhou Zheng-zhong
%A <br>周围
%A 张德民
%A 吴波
%A 周正中
%J 电子与信息学报
%D 2007
%I 
%X In environment with coherent interferences, performance of adaptive array will decline dramatically, and the general solution is spatial smoothing. However, adaptive array utilizing conventional Uniform Spatial Smoothing (USS) has poor ability to suppress coherent interferences, and it will lose the aperture of array. In the paper, an improved approach to suppress coherent interferences is proposed. Firstly, the paper presents an adaptive Weighted-Spatial-Smoothing (WSS) algorithm, which, through weighted averaging of the correlation matrices of each sub-array, can de-correlate the coherent interferences effectively. And then, based on WSS, using the Linear-Constrained-Minimum-Variance (LCMV) criterion, the optimal weight vector of sub-array beamformer can be obtained. Finally, considering the phase relationship of each sub-array, an approach for full array beamforming is proposed. The approach highly improvs the array’s ability to suppress the coherent interferences, and avoids the loss of aperture caused by conventional spatial smoothing. Theoretical analysis and computer simulation confirm the availability and robustness of the algorithm.
%K Wireless communication
%K Adaptive array
%K Weighted spatial smoothing
%K Beamforming
%K Interference suppressing<br>无线通信
%K 自适应阵列
%K 加权空间平滑
%K 波束形成
%K 干扰抑制
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=9766DC3108A533AD&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=DF92D298D3FF1E6E&sid=AFA030E84E3FC132&eid=BF7851EF606736C9&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=9