Controlled One- and Multidimensional Modulations Using Chaotic Maps

Recently, several approaches for communications using chaos have been presented, often showing less than acceptable performance. In this paper, a short introduction to the topic is given, and it is shown that such methods can be efficient—if the information production related to the chaos in the transmitter is controlled and used for the payload of the communication. The influence of minimum distance aspects, a previously ignored key point, to the design of appropriate controlled schemes are studied. In terms of applicable theory, a link between schemes based on one-dimensional and multidimensional chaotic systems (as presented in this paper) and convolutional codes will be established. In order to support our argument, we give simulation results for some a priori examples and results of search procedure for more powerful modulations.