Robust adaptive beamforming algorithm for coherent signals based on virtual array

被引:0
作者
Yuxi Du
Weijia Cui
Fengtong Mei
Chunxiao Jian
Bin Ba
机构
[1] National Digital Switching System Engineering & Technological Research Center,
来源
Annals of Telecommunications | 2023年 / 78卷
关键词
Adaptive beamforming; Coherent signals; Interference plus noise covariance matrix; Signal to interference plus noise ratio;
D O I
暂无
中图分类号
学科分类号
摘要
Aiming at the problem of beamforming performance degradation under the coherent signals model, this paper proposes an adaptive beamforming algorithm based on the virtual array. Compared with previous work, the creative construction of virtual arrays in this paper allows the algorithm to ensure strong coherent signal processing and superior output performance with no degradation in coherence capability. The proposed algorithm firstly constructs a virtual array symmetric to the physical array to form a virtual antenna array model; secondly, a full-rank covariance matrix is obtained by matrix reconstruction; then, the direction vector and power of the signals are estimated; finally, the estimated parameters are used to reconstruct the interference plus noise covariance matrix (INCM) and calculate the weight vector. Simulation analysis verifies the superiority of the algorithm and the validity of theoretical analysis.
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页码:641 / 651
页数:10
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