Extracting Messages Masked by Chaotic Signals of Time-delay Systems
Chaotic Dynamics
2007-05-23 v1
Abstract
We show how to extract messages masked by a chaotic signal of a time-delay system with very high dimension and many positive Lyapunov exponents. Using a special embedding coordinate, the infinite dimensional phase space of the time-delay system is projected to a special three-dimensional space, which enables us to identify the time-delay of the system from the transmitted signal, and reconstruct the chaotic dynamics to unmask the hidden message successfully. The message extraction procedure is illustrated by simulations with Mackey-Glass time-delay system for two type of masking schemes and different kinds of messages.
Keywords
Cite
@article{arxiv.nlin/0005015,
title = {Extracting Messages Masked by Chaotic Signals of Time-delay Systems},
author = {Changsong Zhou and C. -H. Lai},
journal= {arXiv preprint arXiv:nlin/0005015},
year = {2007}
}
Comments
6 pages, 5 figures