Open AccessA parameter-modulated method for chaotic digital communication based on state observers
Author(s) -
Guohui Li,
Deming Xu,
Sizhong Zhou
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.706
Subject(s) - demodulation , chaotic , control theory (sociology) , computer science , hénon map , synchronization (alternating current) , observer (physics) , modulation (music) , transmitter , state (computer science) , binary number , signal (programming language) , state observer , algorithm , physics , mathematics , nonlinear system , telecommunications , control (management) , artificial intelligence , acoustics , channel (broadcasting) , arithmetic , quantum mechanics , programming language
By designing an appropriate state observer, we have constructed two subsystems which alternately synchronize the chaotic drive system. When the parameter of the transmitter is modulated using the binary digital signal, the two systems can alternately be synchronized with the chaotic system. In the receiver, information is demodulated by analyzing synchronization error. An observer-based parameter modulation and demodulation Henon system was chosen to be a typical example. Numerical simulation is carried out to illustrate the effectiveness and efficiency of the proposed method.