ABSTRACT
The main propose of communication systems is to reliably transmit information between two players, that is, the sender and the receiver. Throughout history, these systems behave as essential to foster and support the development and integration of people, besides being the support for their defense initiatives. The chaotic behavior in physical systems implies a signal that presents an erratic and irregular time evolution. A chaotic signal is aperiodic and presents a “complex-like” behavior, while its spectral analysis unveils a broad-band structure. The use of chaos in communication has evolved around two approaches: the coherent and the noncoherent one. The concept of chaos control was coined and conceived in the last decade of the twentieth century. The control of chaos methodology used to accomplish the symbolic codification is named feedback control of symbolic dynamics. Since the introduction of the concept to the present day, research effort that aims to explore communication systems based on chaos is only increasing.
