A New Secure Communications Method Using Cascade Chaotic Computing Systems Ahmet Sertol Koksal and H. Evirgen from the Sakarya University in Turkey Present a New Secure Communications Approach Based on Discrete-time Chaotic Systems

Chaotic signal characteristics allow powerful encryption methods and development of more secure communication systems. In studies conducted in recent years, chaotic masking, chaotic modulation, parametric modulation, inclusion, chaotic shift keying and similar methods [1-6] have been used. Most of these studies are based on synchronization of chaotic systems present in the receiver and transmitter. Different techniques were used to ensure synchronization, and observer-based control systems were incorporated in most applications [7-12]. In some of these studies, however, there were systems designed without synchronization [13].