Reaserch on chaos-based communication, or simply chaotic communication, has been ongoing since the early nineties. It was argued that chaotic communication has the potential of addressing the security issue that is omnipresent in standard communication systems, yet this technology has not taken over traditional methods of communication. In this paper, we give a brief survey on the existing methods for designing chaos-based communication schemes. We also provide a discussion as to why there is still some reluctance in applying this technology in practice. Finally, we propose some solutions to address this issue. In more detail, we propose a framework for the development of the fifth generation of chaotic cryptosystems based on bridging chaotic and traditional modulation methods. Then, we discuss the shape that this generation of chaotic cryptosystems could take and explain the challenges in designing and implementing them.
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