Murilo Baptista
University of Aberdeen, UK.
Abstract: Seminal works at the end of the 80s and beginning of the 90s have launched the use of chaos in applications in communication. Since then, a recent surge of new ideas and methodologies has brought this initially fundamental area into the boundaries of technological exploitation. Several methods have already demonstrated superior performance against traditional methods of communication. In this talk, I will provide a snapshot of the developments in this exciting new area for the last 30 years, and then discuss the new challenges driving research, culminating in the presentation of my recent work showing that chaos naturally allows for multi-user communication systems, each operating with different bands of the spectrum. This is a consequence of the fact that signals formed by a linear composition of chaotic signals preserve the spectrum of Lyapunov exponents. Moreover, special chaotic signals, when linearly composed, also preserve the content of information of the individual signals. I hope to demonstrate to the audience that this area offers a fertile field to do not only fundamental research but also research applied to the development of state-of-the-art technology in communication systems.