Chaos-Based Digital Modulation and Demodulation Techniques

In this chapter we introduce chaos-based digital communications. Our discussion begins with the conventional digital communication systems. We first review the basic operation of digital modulation, which is to represent digital symbols by periodic basis signals.1 In our main discussion, this same basic operation is extended to chaos-based digital communication systems, in which chaotic basis signals are used in lieu of periodic basis signals in the modulation process. In this chapter we present a summary of the recent development in this field and review a few most widely studied chaos-based digital modulation schemes.