Title :
Information transmission using chaotic discrete-time filter
Author_Institution :
Dept. of Electr. & Comput. Eng., State Univ. of New York, Stony Brook, NY, USA
fDate :
1/1/2000 12:00:00 AM
Abstract :
In this work an adaptive approach for transmitting information hidden in a chaotic carrier is presented. The proposed method uses as a chaotic generator a discrete time nonlinear filter with a sawtooth nonlinearity induced by the two´s complement overflow in digital filters. The synchronization at the receiving end is ensured by an adaptive slave system. Two different methods for hiding the information in the chaotic carrier are analyzed: direct chaos modulation and parameter modulation
Keywords :
adaptive filters; chaos; chaos generators; digital communication; digital filters; discrete time filters; error analysis; modulation; nonlinear filters; synchronisation; telecommunication security; adaptive slave system; chaotic carrier; chaotic discrete-time filter; chaotic generator; digital filters; direct chaos modulation; hidden information; nonlinear filter; parameter modulation; sawtooth nonlinearity; secure information transmission; synchronization; two´s complement overflow; Adaptive systems; Chaos; Chaotic communication; Digital filters; Finite impulse response filter; Frequency synchronization; IIR filters; Information filtering; Information filters; Noise robustness;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
