%0 Journal Article
%A 马社祥
%A 梅笑冰
%T <span class="fontstyle0">Side-lobe constrained beamforming under virtual expansion of L-shaped array</span>
%D 2021
%R 10.19682/j.cnki.1005-8885.2021.1007
%J 中国邮电高校学报（英文）
%P 79-88
%V 28
%N 2
%X <span class="fontstyle0">To reduce the side-lobe level of L-shaped expansion array and improve the output signal to interference and noise<br>
ratio (SINR), the algorithm of side-lobe constraint based on minimum variance distortionless response ( MVDR-<br>
SC) is proposed. Firstly, the approach of mixing diagonal loading and Mailloux-Zatman (DLMZ) is used to taper<br>
the covariance matrix of the expansion array. Then, the second order cone programming ( SOCP) obtained by<br>
constructing a new matrix is used to control the beam side-lobe. Finally, the new adaptive weight numbers are<br>
constructed by adjusting the proportion between DLMZ and SOCP. Simulation results show that the MVDR-SC<br>
algorithm can effectively reduce the side-lobe of beamforming under the L-shaped expansion array and obtain a<br>
larger output SINR. At the same time, it has good robustness to the mutual coupling error.</span> <br>
%U https://jcupt.bupt.edu.cn/CN/10.19682/j.cnki.1005-8885.2021.1007