基于Householder多级维纳滤波器的全联通WSN分布式LCMV波束形成器方法  

A Householder Multistage Wiener Filter Method for Distributed LCMV Beamforming in Fully Connected WSN

作　　者：黄庆东[1] 庞胜利[1] 卢光跃[1] 

机构地区：[1]西安邮电大学通信与信息工程学院信息与通信技术国家级实验教学中心,陕西西安710121

出　　处：《电子学报》2015年第2期283-288,共6页Acta Electronica Sinica

基　　金：国家自然科学基金(No.61301091;No.61271276);陕西省教育厅项目(No.11JK0929)

摘　　要：针对减少分布式LCMV波束形成器在全联通WSN中的计算量问题,提出基于Householder多级维纳滤波器(HMSWF)的分布式LCMV波束形成器方法.该方法通过有效引入HMSWF技术避免本地协方差矩阵估计及求逆运算,能以更少的计算量获得分布式LCMV波束形成器相同的输出性能.另外,还可以在递推过程中进行合理截断处理来进一步降低运算量.计算机仿真结果验证了算法的优良性能.Due to reduce the calculation of distributed LCMV beamforming in fully connected WSN,a Householder Multistage Wiener Filter（ HMSWF） based method for distributed LCMV beamforming is proposed. The newmethod effectively introduces HMSWF technology to avoid the local covariance matrix estimation and inversion. Consequently it can get the same output performance as distributed LCMV beamforming with less amount of calculation. In addition,the newmethod can be truncated in the recursive processing to further reduce the amount of calculation. Computational simulation results showthat the newmethod achieves an excellent performance.

关 键 词：无线传感器网络 分布式信号估计 线性约束最小方差波束形成器 

分 类 号：TN911.23[电子电信—通信与信息系统]