一种基于符号动力学的混沌序列消噪方法

Journal of Applied Sciences ›› 2005, Vol. 23 ›› Issue (1): 26-30.

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A Symbolic Dynamics Based Method for Noise Reduction in Chaotic Sequence

LI Hui, XU Pei-xia

Electronic Engineering and Information Science Department, University of Science and Technology of China, Hefei 230027, China

Received:2003-10-25 Revised:2004-03-01 Online:2005-01-31 Published:2005-01-31

Abstract

Abstract: Based on symbolic dynamics, a method for noise reduction of unimodal map chaotic sequence is presented.The Markov process model of symbolic dynamics is discussed and from this model a maximumlikehood method based on the Viterbi algorithm for the noise reduction is derived.And by using symbolic dynamics, the performance of this noise reduction method is analyzed.It is shown that the analysis agrees with the simulation result.The method and its analysis can be applied in noise reduction of chaotic communication.

Key words: symbolic dynamics, Viterbi algorithm, chaos, noise reduction

CLC Number:

TN911.4

LI Hui, XU Pei-xia. A Symbolic Dynamics Based Method for Noise Reduction in Chaotic Sequence[J]. Journal of Applied Sciences, 2005, 23(1): 26-30.

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A Symbolic Dynamics Based Method for Noise Reduction in Chaotic Sequence

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