基于粒子滤波的混沌信号盲分离
doi: 10.3724/SP.J.1146.2006.01207
Blind Separation Based on Particle Filtering for Chaotic Signal
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摘要: 该文首先建立了混沌信号盲分离问题的状态空间模型，进而通过引入Rao-Blackwellisaion策略和加扰动的方法，提出了一种基于粒子滤波的在线盲分离算法。在此基础上，为了降低分离后信号中的残留噪声，提出了新颖的延迟估计方法，很好地解决了传统的延迟加权(delay-weight)方法中信号源之间的相互干扰问题。
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关键词:
- 混沌信号;盲分离;粒子滤波
Abstract: A state space model for chaotic signal blind separation is first suggested, and then combined the Rao-Blackwellisaion (RB) strategy and incorporated roughening noise method, a particle filtering based online blind separation algorithm is proposed. To further decrease the residual noise in the online recovered signals, a novel delay estimation method which can effectively reduce the cross influence of source signals compared to the traditional delay-weight method is proposed. -
[1] Hyvarinen A, Karhunen J, and Oja E. Independent Component Analysis. New York: Wiley, 2001, chapter 1. 徐茂格： 男，1982年生，博士生，研究方向为非线性系统与混沌理论、粒子滤波技术. [2] Andreyev Y V and Dmitriev A S. Separation of chaotic signal sum into components in the presence of noise[J].IEEE Trans. on Circuits Syst. I.2003, 50(5):613-618 [3] Wang B Y and Zheng W X. Blind extraction of chaotic signal from an instantaneous linear mixture[J].IEEE Trans. on Circuits Syst.II: Express Brieffs.2006, 53(2):143-147 [4] Liu Kai, Li Hui, Dai Xu-Chu, and Xu Pei-Xia. Particle filtering based separation of chaotic signals[J].Journal of Information Computational Science.2005, 2(2):283-287 [5] Doucet A, Godsill S, and Andrieu C. On sequential Monte Carlo sampling methods for Bayesian filtering[J], Statist. Comput., 2000, 10(3): 197-208. [6] Gordon N J, Salmond D J , and Smith A F M. Novel approach to nonlinear/non-Gaussian Bayesian state estimation[J].IEE Proceedings on Radar and Signal Processing.1993, 140(2):107-113 [7] Chen R, Wang X, and Liu J S. Adaptive joint detection and decoding in flat-fading channels via mixture Kalman filtering, IEEE Trans. on Info.Theory. 2000, 46(6): 2079-2094. [8] Liu J and Chen R. Blind deconvolution via sequential imputations[J].J. Amer. Statist.Assoc.1995, 90(430):567-576 [9] Ling C, Wu X F, and Sun S G. A general efficient method for chaotic signal estimation[J].IEEE Trans. on Signal Processing.1999, 47(5):1424-1428 -
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