作者
Aimin Song, Aiqi Wang, Shengyang Luan, Tianshuang Qiu
发表日期
2017/6/1
期刊
AEU-International Journal of Electronics and Communications
卷号
76
页码范围
77-85
出版商
Urban & Fischer
简介
We propose a robust widely linear (WL) beamformer for noncircular (NC) signals in the presence of angle of arrival (AOA) errors or array random perturbations. In our beamformer, the block conjugate structure of covariance matrix is exploited to avoid updating the full weight vector, which reduces the computational loads. We add a variable diagonal loading term in the weight vector to improve the robustness of the WL beamformer. Moreover, the orthogonality constraint of block matrix is not required to calculate the amount of diagonal loading. Computer-simulation results show that the proposed WL beamforming provides improved performance over the conventional linear beamformers for NC signals in the presence of AOA errors and array random perturbations.
引用总数
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