Side-lobe constrained beamforming under virtual expansion of L-shaped array  

作　　者：Ma Shexiang Mei Xiaobing 

机构地区：[1]School of Electrical and Electronic Engineering,Tianjin University of Technology,Tianjin 300384,China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2021年第2期79-88,共10页中国邮电高校学报（英文版）

摘　　要：To reduce the side-lobe level of L-shaped expansion array and improve the output signal to interference and noise ratio(SINR),the algorithm of side-lobe constraint based on minimum variance distortionless response(MVDR-SC)is proposed.Firstly,the approach of mixing diagonal loading and Mailloux-Zatman(DLMZ)is used to taper the covariance matrix of the expansion array.Then,the second order cone programming(SOCP)obtained by constructing a new matrix is used to control the beam side-lobe.Finally,the new adaptive weight numbers are constructed by adjusting the proportion between DLMZ and SOCP.Simulation results show that the MVDR-SC algorithm can effectively reduce the side-lobe of beamforming under the L-shaped expansion array and obtain a larger output SINR.At the same time,it has good robustness to the mutual coupling error.

关 键 词：BEAMFORMING L-shaped expansion array side-lobe constraint second order cone programming(SOCP) 

分 类 号：TN820[电子电信—信息与通信工程]