A new spread spectrum communication system utilizing chaotic frequency modulation of sinusoidal signals is discussed. A single phase lock loop (PLL) system in the receiver is used both to synchronize the local chaotic oscillator and to recover the information signal. We study the dynamics of the synchronization process, stability of the PLL system, and evaluate the bit-error-rate performance of...

A communication scheme based on the synchronization of two chaotic semiconductor lasers is experimentally tested. The Chaos in the single-mode semiconductor lasers is generated by means of an optoelectronic feedback. Synchronization of the chaos is achieved by coupling a fraction of the transmitter’s output power into the driving current of the receiver. We present experimental results on the r...

We propose a secure communication scheme based on anticipating synchronization of two chaotic laser diodes, one subject to incoherent optical feedback and the other to incoherent optical injection. This scheme does not require fine tuning of the optical frequencies of both lasers as is the case for other schemes based on chaotic laser diodes subject to coherent optical feedback and injection. O...

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 transmit...

In this work, a novel chaotic encryption technique is proposed to realize a secure communication system. In the proposed method, the message signal to be transmitted is first encrypted using a chaotic keystream and then masked with a chaotic signal. At the receiver end, the received chaotic signal is used for synchronization and to recover the encrypted signal. After applying the same keystream...

| Chaotic routers are randomizing, non-minimal adaptive packet routers designed for use in the communication networks of parallel computers. Chaotic routers combine the exibility found in adaptive routing with a design simple enough to be competitive with the most streamlined oblivious routers. We review chaotic routing and compare it with other contemporary network routing approaches, includin...

A system for synchronizing chaotic transmitters and receivers that is less sensitive to channel effects than other known chaotic communication methods. The system employs duplicate transmitter and receiving modules and in addition to the chaotic output a synchronizing signal which occupies a reduced bandwidth. The small bandwidth affords the system a greater resistance to the affects of frequen...