基于最陡下降的最优稳健宽带波束形成算法  

An optimal robust broadband beamforming algorithm based on steepest descent

作　　者：罗良桂[1] 蒋留兵[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《桂林电子科技大学学报》2011年第6期442-445,共4页Journal of Guilin University of Electronic Technology

基　　金：国家自然科学基金(61162007;61163060);广西科学研究与技术开发项目(桂科攻0996028)

摘　　要：针对导向矢量失配问题,提出一种基于最陡下降法的最优宽带稳健波束形成算法。该算法基于宽带波束形成的时域模型,根据多频点约束下导向矢量的不确定范围,利用最陡下降法求解最优角加载量,并推导出真实的导向矢量。同时将真实导向矢量和角加载协方差矩阵相结合,求解最优加权值。仿真结果验证了该算法的稳健性。An optimal robust broadband beamforming algorithm with steepest descent（RBF-SD） method was introduced to solve the poblem of steering vector mismatch.This algorithm was on the basis of the time-domain broadband beamforming model,according to uncertainty set of the multi-frequency steering vector constraints,a steepest descent method was used to solve the optimal optimal value of diagonal loading,and then the true steering vector was deduced.Meanwhile,the optimal weight could be solved by combining the true steering vector and the covariace matrix with diagonal doading value.Simulation results verify that the proposed algorithm is robust.

关 键 词：最陡下降法 宽带波束形成 角加载 稳健 

分 类 号：TN911.72[电子电信—通信与信息系统]