Mainlobe interference suppression and beam pattern optimization methods  

作　　者：Du Xiaojuan Tian Bin 

机构地区：[1]State Key Laboratory of Integrated Business Services Networks,Xidian University,Xi'an 710071,China [2]School of Telecommunication Engineering,Xidian University,Xi'an 710071,China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2023年第2期1-7,共7页中国邮电高校学报（英文版）

摘　　要：When the power of the mainlobe interference received by the receiver is at the same level as the power of the sidelobe interference power,the traditional eigen-projection interference suppression method has the problems of severe beam deformation and peak shift.Aiming at these problems,a beam pattern optimization method(BPOM)was proposed,which can suppress the interference well even when the mainlobe interference power is approximately equal to the sidelobe interference power.In the method,the mainlobe interference eigenvectors are firstly determined according to the correlation criterion.Then through the eigenvalue comparison,the sidelobe interference eigenvectors whose eigenvalues are approximately equal to the mainlobe interference eigenvalues are judged.After that,a projection matrix is constructed to filter out the mainlobe and sidelobe interference.Finally,the covariance matrix is reconstructed and the weight vector for beamforming is obtained.Simulation shows that BPOM has a better output performance than the existing algorithms in case that the power of the mainlobe interference is close to that of the sidelobe interference.

关 键 词：mainlobe interference eigen-projection adaptive beamforming(ABF) 

分 类 号：TN97[电子电信—信号与信息处理] TN820.12[电子电信—信息与通信工程]