Adaptive unknonwn-input observers-based synchronization of chaotic circuits for secure telecommunication
Identifieur interne : 002402 ( Main/Exploration ); précédent : 002401; suivant : 002403Adaptive unknonwn-input observers-based synchronization of chaotic circuits for secure telecommunication
Auteurs : Habib Dimassi [France] ; Antonio Loria [France]Source :
- IEEE Transactions on Circuits and Systems Part 1 Fundamental Theory and Applications [ 1057-7122 ] ; 2011-04.
Abstract
We propose a robust adaptive chaotic synchronization method based on unknown-input observers for master-slave syn- chronization of chaotic systems, with application to secured com- munication. The slave system is modelled by an unknown input observer in which, the unknown input is the transmitted informa- tion. As in the general observer-based synchronization paradigm, the information is recovered if the master and slave systems ro- bustly synchronize. In the context of unknown-input observers, this is tantamount to estimating the master's states and the unknown inputs. The set-up also considers the presence of perturbations in the chaotic transmitter dynamics and in the output equations (the transmitted signal). That is, the estimator (slave system) must syn- chronize albeit noisy measurements and reject the effect of pertur- bations on the transmitter dynamics. We provide necessary and sufficient conditions for synchronization to take place. To highlight our contribution, we also present some simulation results with the purpose of comparing the proposed method to classical adaptive observer-based synchronization (without disturbance rejection). It is shown that additive noise is perfectly canceled and the encoded message is well recovered despite the perturbations.
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DOI: 10.1109/TCSI.2010.2089547
Affiliations:
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The slave system is modelled by an unknown input observer in which, the unknown input is the transmitted informa- tion. As in the general observer-based synchronization paradigm, the information is recovered if the master and slave systems ro- bustly synchronize. In the context of unknown-input observers, this is tantamount to estimating the master's states and the unknown inputs. The set-up also considers the presence of perturbations in the chaotic transmitter dynamics and in the output equations (the transmitted signal). That is, the estimator (slave system) must syn- chronize albeit noisy measurements and reject the effect of pertur- bations on the transmitter dynamics. We provide necessary and sufficient conditions for synchronization to take place. To highlight our contribution, we also present some simulation results with the purpose of comparing the proposed method to classical adaptive observer-based synchronization (without disturbance rejection). It is shown that additive noise is perfectly canceled and the encoded message is well recovered despite the perturbations.</div></front></TEI><affiliations><list><country><li>France</li></country></list><tree><country name="France"><noRegion><name sortKey="Dimassi, Habib" sort="Dimassi, Habib" uniqKey="Dimassi H" first="Habib" last="Dimassi">Habib Dimassi</name></noRegion><name sortKey="Loria, Antonio" sort="Loria, Antonio" uniqKey="Loria A" first="Antonio" last="Loria">Antonio Loria</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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