Premium
High‐gain observer for chaotic synchronization and secure communication
Author(s) -
Yu Wen
Publication year - 2005
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.720
Subject(s) - transmitter , chaotic , computer science , replica , observer (physics) , synchronization (alternating current) , control theory (sociology) , signal (programming language) , secure communication , telecommunications , computer network , physics , artificial intelligence , control (management) , encryption , channel (broadcasting) , art , quantum mechanics , visual arts , programming language
Abstract An information signal can be embedded in a transmitter which produces a chaotic signal, it is inviable to the observer who has no knowledge about the transmitter, but it can be recovered if the receiver is a replica of the chaotic transmitter. In this paper, a new aspect of the chaotic communication is introduced. A high‐gain observer at the receiver's end replaces the conventional chaotic system. A single parameter is adjusted so that the receiver and transmitter can be synchronized. Three chaotic systems, Duffing equation, Van der Pol oscillator and Chua's circuit, are provided to illustrate the effectiveness of the chaotic communication. Copyright © 2005 John Wiley & Sons, Ltd.