LU Feng1,SHEN Xi-zhong2,ZHOU Guo-biao1(1.Department of Mathematics,Shanghai Jiaotong University,Shanghai 200030,China;2.Mechanical and Automation Department,Shanghai Institute of Technology,Shanghai 200235,China)
Abstract:Firstly what the Blind Signal Separation Problem(P1) in engineering is equivalent to an optimization problem(P2) is described,which is presented as the necessary and sufficient condition that makes the components of Y(t) statistically independent of each