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.