Synchronization recovery of chaotic signal through imperfect channel using optimization approach

The implementation of robust synchronization technique between transmitter-receiver pair in chaotic communication is the main challenge in chaotic communication system design. In this paper we present a new approach to achieve chaotic synchronization by the design of a compensator at the receiver side depending on several optimization algorithms, namely genetic algorithm GA, pattern search, and particle swarm optimization PSO. The behavior of these optimization algorithms are evaluated under the condition of imperfect linear transmitting channel with constant attenuation and offset. Our evaluation shows that the optimization algorithms can be used to accomplish robust chaotic synchronization. The simulation results verify the robustness of our approach in the three algorithms but with accuracy of the last two algorithms (pattern search and PSO) are significantly higher than GA.