计算机应用 ›› 2012, Vol. 32 ›› Issue (09): 2432-2435.DOI: 10.3724/SP.J.1087.2012.02432

• 网络与通信 • 上一篇    下一篇

估计盲信源分离混合矩阵的通用方法

张延良1*,张伟涛2,杜静静3   

  1. 1.河南理工大学 计算机科学与技术学院,河南 焦作 454001;
    2.西安电子科技大学 电子工程学院,西安 710071;
    3.河南理工大学 电气工程与自动化学院,河南 焦作 454001
  • 收稿日期:2012-03-20 修回日期:2012-06-07 发布日期:2012-09-01 出版日期:2012-09-01
  • 通讯作者: 张延良
  • 作者简介:张延良(1979-),男,河南汝州人,副教授,博士,主要研究方向:盲信号处理、独立分量分析; 张伟涛(1983-),男,陕西户县人,讲师,博士,主要研究方向:通信信号处理; 杜静静(1982-),女,河南博爱人,副教授,博士,主要研究方向:非线性控制。
  • 基金资助:

    国家自然科学基金资助项目(60775013,61104079);河南理工大学青年基金资助项目(Q2011-50);河南理工大学博士基金资助项目(648753)

General method to estimate mixture matrix in blind source separation

ZHANG Yan-liang1*,ZHANG Wei-tao2,DU Jing-jing3   

  1. 1.College of Computer Science and Technology,Henan Polytechnic University,Jiaozuo Henan 454001,China;
    2.School of Electronic Engineering,Xidian University,Xi'an Shaanxi 710071,China;
    3.College of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo Henan 454001,China
  • Received:2012-03-20 Revised:2012-06-07 Online:2012-09-01 Published:2012-09-01

摘要: 混合矩阵的估计是解决盲信源分离问题的关键一步,但现有研究中缺乏一种同时适用于适定、超定及欠定情况下混合矩阵估计的通用方法。根据张量标准分解的因子矩阵和盲信源分离混合矩阵的估计均存在幅值和排列顺序的不确定性这一性质,将混合矩阵的估计转化为观测信号统计量所组成张量的标准分解问题,标准分解采用循环最小化方法,通过交替最小二乘算法实现。理论分析和仿真实验表明,所提方法可有效解决适定、超定和欠定混合矩阵的估计,是一种估计盲信源分离混合矩阵的通用方法。

关键词: 盲信源分离, 欠定混合, 标准分解, 循环最小化

Abstract: The estimation of mixture matrix is a key step to solve the problem of blind source separation. But there lacks a general estimation method suitable for well-determined, over-determined and under-determined mixture matrix in the existing research. Scaling and permutation ambiguities lie in both factor matrix of tensor canonical decomposition and mixture matrix in blind source separation. With this property, the estimation of mixture matrix can be transformed into tensor canonical decomposition of observed signals' statistics. The canonical decomposition can be implemented by cyclic minimization, with the algorithm of alternating least squares. The theoretical analysis and simulations show that the method proposed in this paper is a general method to estimate well-determined, over-determined and under-determined mixture matrix.

Key words: blind source separation, underdetermined mixture, canonical decomposition, cyclic minimization

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