By Topic

Nonlinear observer performance in chaotic synchronization with application to secure communication

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
J. Amirazodi ; Dept. of Electr. Eng., Arkansas Univ., Fayetteville, AR, USA ; E. E. Yaz ; A. Azemi ; Y. I. Yaz

This work is on performance comparison of five different nonlinear observers in two chaotic synchronization case studies and their application to secure communications. Extended Kalman filter, state dependent Riccati equation, Thau's observer, high-gain observer, and covariance upper bound assignment techniques are used in state reconstruction of two chaotic nonlinear systems, namely Chua and Lorenz systems. We show that synchronization of chaotic systems can be effectively achieved by using any of the above techniques. However, they exhibit different performances. A comparative robustness study involving performance under different measurement noise levels is also included. The above methods are then applied to introduce a method of secure communications, by chaotic masking, where the message is injected into the chaotic signal generated by Chua's circuit in the transmitter where they are simultaneously transmitted over a noisy channel to the receiver. The proposed observers are then applied in the receiver and the performances are compared based on Monte-Carlo simulations in order to demonstrate the relative effectiveness of these techniques.

Published in:

Control Applications, 2002. Proceedings of the 2002 International Conference on  (Volume:1 )

Date of Conference:

2002