Extraction of periodic signals in chaotic secure communication using Duffing oscillators

doi:10.1088/1674-1056/17/7/009

中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2373-2376.doi: 10.1088/1674-1056/17/7/009

Extraction of periodic signals in chaotic secure communication using Duffing oscillators

王云才, 赵清春, 王安帮

Department of Physics, College of Science, Taiyuan University of Technology, Taiyuan 030024, China

收稿日期:2007-10-01 修回日期:2007-12-17 出版日期:2008-07-09 发布日期:2008-07-09
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos 60577019 and 60777041) and the International Cooperation Project of Shanxi Province, China.

Extraction of periodic signals in chaotic secure communication using Duffing oscillators

Wang Yun-Cai(王云才)^†, Zhao Qing-Chun(赵清春), and Wang An-Bang(王安帮)

Department of Physics, College of Science, Taiyuan University of Technology, Taiyuan 030024, China

Received:2007-10-01 Revised:2007-12-17 Online:2008-07-09 Published:2008-07-09
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos 60577019 and 60777041) and the International Cooperation Project of Shanxi Province, China.

摘要/Abstract

摘要： This paper presents a novel approach to extract the periodic signals masked by a chaotic carrier. It verifies that the driven Duffing oscillator is immune to the chaotic carrier and sensitive to certain periodic signals. A preliminary detection scenario illustrates that the frequency and amplitude of the hidden sine wave signal can be extracted from the chaotic carrier by numerical simulation. The obtained results indicate that the hidden messages in chaotic secure communication can be eavesdropped utilizing Duffing oscillators.

Abstract: This paper presents a novel approach to extract the periodic signals masked by a chaotic carrier. It verifies that the driven Duffing oscillator is immune to the chaotic carrier and sensitive to certain periodic signals. A preliminary detection scenario illustrates that the frequency and amplitude of the hidden sine wave signal can be extracted from the chaotic carrier by numerical simulation. The obtained results indicate that the hidden messages in chaotic secure communication can be eavesdropped utilizing Duffing oscillators.

Key words: chaos, signal extraction, Duffing oscillator, secure communication

中图分类号: (Communication using chaos)

05.45.Vx

05.45.Pq (Numerical simulations of chaotic systems) 05.45.Xt (Synchronization; coupled oscillators)

王云才, 赵清春, 王安帮. Extraction of periodic signals in chaotic secure communication using Duffing oscillators[J]. 中国物理B, 2008, 17(7): 2373-2376.

Wang Yun-Cai(王云才), Zhao Qing-Chun(赵清春), and Wang An-Bang(王安帮). Extraction of periodic signals in chaotic secure communication using Duffing oscillators[J]. Chin. Phys. B, 2008, 17(7): 2373-2376.

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Extraction of periodic signals in chaotic secure communication using Duffing oscillators

Extraction of periodic signals in chaotic secure communication using Duffing oscillators

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