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Observations on Message Transmission Using Rossler and Lorenz Chaos Systems with PSpice and Matlab Models

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2 Author(s)
Blair, D. ; Univ. of Texas at Tyler, Tyler, TX ; Pieper, R.

Message transmission and reception systems (TRS) for both Lorenz coupled and Rossler coupled chaotic nonlinear systems are presented. Both a circuit simulator, PSpice, and a math package, Matlab, for predicting time evolution of coupled nonlinear differential equations were used. Both Matlab and PSPICE TRS models were set up, tested and demonstrated to yield essentially identical time evolution predictors. The Rossler TRS required a combination of the variable substitution method, typically employed for Lorenz TRSs along with the "diffusive coupling technique", known to be necessary to couple two Rossler circuits. Examples indicating functionality of the systems to obscure and reliably recover messages for audio and sinusoid message types are presented.

Published in:

System Theory, 2008. SSST 2008. 40th Southeastern Symposium on

Date of Conference:

16-18 March 2008