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Application of Modified ICA to Secure Communications in Chaotic Systems

  • Shih-Lin Lin
  • Pi-Cheng Tung
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4707)

Abstract

Along with the increasingly quick development of modern communication system technologies, secure communication has become increasingly important. We propose a new method for secure communication systems. Independent component analysis (ICA) is employed to retrieve the message signal encrypted by a mixture of Gaussian white noise and chaotic noise. Unlike the traditional chaotic synchronization method, this method does not require knowing the basic Gaussian white noise and chaotic noise variables. However, the signals separated by traditional ICA shows opposite phase and unequal amplitude. Our study proposed a modified ICA, which can calculate accurately the phase and amplitude. The results showed that modified ICA could effectively extract the original message signal.

Keywords

Information Retrieval Independent Component Analysis Chaotic Systems Secure Communication 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Shih-Lin Lin
    • 1
  • Pi-Cheng Tung
    • 1
  1. 1.The Department of Mechanical Engineering, the National Central University, Chung-Li 320, Email: t331166@ncu.edu.twTaiwan

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