Chaotic synchronization in discrete-time systems connected by bandlimited channels
Tipo
Artigo
Data de publicação
2011
Periódico
IEEE Communications Letters
Citações (Scopus)
22
Autores
Eisencraft M.
Fanganiello R.D.
Monteiro L.H.A.
Fanganiello R.D.
Monteiro L.H.A.
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Título de Volume
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Resumo
Due to the broadband characteristic of chaotic signals, many of the methods that have been proposed for synchronizing chaotic systems do not usually present a satisfactory performance when applied to bandlimited communication channels. Here, the effects of bandwidth limitations imposed by the channel on the synchronous solution of a discrete-time chaotic master-slave network are investigated. The discrete-time system considered in this study is the Hénon map. It is analytically shown that synchronism can be achieved in such a network by introducing a digital filter in the feedback loop responsible for generating the chaotic signal that will be sent to the slave node. Numerical simulations relating the filter parameters, such as its order and cut-off frequency, to the maximum Lyapunov exponent of the master node, which determines if the transmitted signal is chaotic or not, are also presented. These results can be useful for practical communication schemes based on chaos. © 2011 IEEE.
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Assuntos Scopus
Band-limited channels , Bandlimited communication , Bandwidth limitation , Based-on chaos , Broadband characteristics , Chaotic signal , Chaotic synchronization , Communication schemes , Cut-off , Discrete time system , Discrete-time , Feed-back loop , Filter parameter , Master-slave , Maximum Lyapunov exponent , Transmitted signal