Martin Hasler, Thomas Schimming,
Laboratory of Nonlinear System, School of Computer and Communication Sciences Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
SYNCHROINFO JOURNAL. Volume 8, Number 2 (2022). P. 8-12.
The use of chaotic systems in communications approaches the threshold for industrial applicability. We shall give here an overview over a few techniques we think are promising. However, this overview does not pretend to be complete and it contains personal views on the subject. Also, the use of chaotic system for information encryption is not discussed at all. Only a choice of methods for coding and modulation for the transmission of digital information will be presented. An overview of a number of techniques to transmit information using chaotic systems is given. The difficulties in obtaining a good performance of such systems with respect to channel noise leads to fundamental question, to which we give a possible answer. In particular it has been confirmed both in theory and by a constructive approach leading to a controlled variant of CSK, that indeed the information generated by free running chaotic systems (as captured by the Kolmogorov-Sinai entropy) is the problem, and the solution is a suitable control that makes this information part of the payload.
Keywords: Chaos, Communications, Noise performance, information theory, modulation, coding.
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