frey_diagr

Scicos Diagram
fr - eng

Frey's chaotic encoder

$\epsfig{file=frey_diagr.eps,height=8.5cm}$

Module

Modnum

Frey's chaotic encoder

Context

Te = 1
Tfin = 4490
Nbit=16
Intmax = 2^(Nbit-1)
N = 1
ci1 = 1000
ci2 = 0

Scope Results

$\begin{figure}\begin{center} \epsfig{file=frey_scope_1.eps,width=330.00pt} \end{center}\end{figure}$

Figure : (a) Time domain waveforms of state variables

$\begin{figure}\begin{center} \epsfig{file=frey_scope_2.eps,width=330.00pt} \end{center}\end{figure}$

Figure : (b) phase plan

Used blocks

IMODULO_f - Integer modulo function block
LCMODULO_f - Left shift circulate integer modulo function block

Authors

IRCOM Group Alan Layec

Bibliography

1

D. R. Frey, ``Chaotic digital encoding: An approach to secure communication,'' IEEE Trans. Circuits Syst. II, vol. 40, no. 10, pp. 660-666, Oct. 1993.

2

M. J. Werter, ``An improved chaotic digital encoder,'' IEEE Trans. Circuits Syst. II, vol. 45, no. 2, pp. 227-229, Feb. 1998.