| 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 |
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| 引用本文： | 黄庆东,庞胜利,卢光跃. 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[J]. 电子学报, 2015, 43(2): 283-288. DOI: 10.3969/j.issn.0372-2112.2015.02.012 |
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| 作者姓名： | 黄庆东 庞胜利 卢光跃 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金(No ．61301091，No ．61271276)；陕西省教育厅项目 |
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| 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.
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| 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 |
| 收稿时间： | 2014-01-10 |
A Householder Multistage Wiener Filter Method for Distributed LCMV Beamforming in Fully Connected WSN |
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| HUANG Qing-dong,PANG Sheng-li,LU Guang-yue. A Householder Multistage Wiener Filter Method for Distributed LCMV Beamforming in Fully Connected WSN[J]. Acta Electronica Sinica, 2015, 43(2): 283-288. DOI: 10.3969/j.issn.0372-2112.2015.02.012 |
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| Authors: | HUANG Qing-dong PANG Sheng-li LU Guang-yue |
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| Affiliation: | Informations and Communications Technology of National Experimental Teaching Center, School of Communication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an, Shaanxi 710121, China |
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| Abstract: | 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 new method 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 new method can be truncated in the recursive processing to further reduce the amount of calculation.Computational simulation results show that the new method achieves an excellent performance. |
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| Keywords: | wireless sensor network (WSN ) distributed signal estimation (DSE ) linearly constrained minimum variance (LCMV ) beamforming |
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