Equalização de canais de comunicação para a sincronização de mapas
Renato Candido, Marcio Eisencraft, Magno T. M. Silva. Equalização de canais de comunicação para a sincronização de mapas. In: Conferência Brasileira de Dinâmica, Controle e Aplicações – DINCON’2013, 2013, Fortaleza. Anais do DINCON 2013, 2013, pp.1–6.
Abstract
Many communication systems based on the synchronism of chaotic systems have been proposed in the literature. However, due to the lack of robustness of chaos synchronization, in most cases even minor channel imperfections are enough to hinder communication. In this paper, we propose an adaptive equalization scheme to recover a binary sequence modulated by a chaotic signal, which in turn is generated by an Hénon map. The proposed scheme employs the normalized least-mean-squares (NLMS) algorithm with a modification to enable chaotic synchronization even when the communication channel is not ideal. Simulation results show that the modified NLMS can successfully equalize the channel in different scenarios.
Keywords
Dynamical Systems Applications, Chaotic Synchronization, Chaos-based Communication Systems, Adaptive Equalizers.