Synchronization of hyperchaotic systems with application to secure communication

In this paper, we propose a secure communication scheme in which a hyperchaotic system is used as a carrier for the encoded data to be transmitted. At the transmitter end, two different chaotic systems are coupled and used to construct a new hyperchaotic system. One of the outputs of the hyperchaotic system is used as a carrier for the encrypted data. At the receiving end, the discrete-time Regularized Least Square (RLS) estimator is used to reconstruct the chaotic signal and hence retrieve the encoded data. Simulation results are presented to illustrate the effectiveness of the proposed approach.