H∞-SYNCHRONIZER FOR CHAOTIC COMMUNICATION SYSTEMS
Takami Matsuo, Yoshinori Toshimitsu, Haruo Suemitsu · International Journal of Bifurcation and Chaos · 2008
In this paper, we introduce an observer-based chaotic communication system proposed by Grassi et al. to the transmitted signal of a dynamical compensator to improve the robustness of the cryptosystem. Specifically, we parameterize a synchronizer and an H∞synchronizer based on the robust control theory. Furthermore, we design a free parameter in the dynamics to improve the robust stability of the cryptosystem with respect to delays in the transmission line.