A new approach for adaptive blind equalization of chaotic communication: The optimal linearization technique

J. S.H. Tsai, F. C. Lu, R. S. Provence, L. S. Shieh, Z. Han

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Together with the optimal linearization technique, a blind-channel equalization for the extended-Kalman-filter-based chaotic communication is proposed in this paper. First, the optimal linearization technique is utilized to find the exact linear models of the chaotic system at operating states of interest. The proposed blind-channel equalization is formulated as a mixed nonlinear parameter and state estimation problem by an autoregressive (AR) model. The channel coefficients of a fading and multipath channel can be represented by an AR process. Then, an extended Kalman filter algorithm is utilized to reduce the effect of channel noise. By using the extended Kalman filter, the channel coefficients and the state of the system, which is the signal before going through the channel, can be estimated. The stability problem of the proposed blind-channel equalization is also addressed. Numerical examples and simulations are given to show the effectiveness and speed of convergence for the proposed methodology.

Original languageEnglish
Pages (from-to)1687-1698
Number of pages12
JournalComputers and Mathematics with Applications
Volume58
Issue number9
DOIs
Publication statusPublished - 2009 Nov

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computational Theory and Mathematics
  • Computational Mathematics

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