| Synchronization of the time—varying parameter chaotic system and its application to secure communication |
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| 引用本文： | 牟静,陶超,杜功焕.Synchronization of the time—varying parameter chaotic system and its application to secure communication[J].中国物理 B,2003,12(4):381-388. |
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| 作者姓名： | 牟静 陶超 杜功焕 |
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| 作者单位： | State Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos 10074035 and 19834040). |
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| 摘 要： | In this paper we propose and investigate the synchronization of a new chaotic model with time-varying parameters and apply it to improve the security of chaotic communication. In this model, the chaotic system is modulated by both the message and the varying parameters. The varying parameters distort the phase space so heavily that they prevent the carrier from being broken by nonlinear dynamic forecasting method. Theory and simulation experiments with speech signal communication indicate that the receiver can gain a perfect synchronization with the transmitter, and the intruder cannot break down this communication system. We also discuss the robustness of the new communication system.
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| 关 键 词： | 通信安全 混沌同步 非线性动力学预测 时变参数 模拟试验 |
| 收稿时间： | 7/1/2002 12:00:00 AM |
| 修稿时间： | 1/3/2003 12:00:00 AM |
Synchronization of the time-varying parameter chaotic system and its application to secure communication |
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| Mu Jing,Tao Chao and Du Gong-Huan.Synchronization of the time-varying parameter chaotic system and its application to secure communication[J].Chinese Physics B,2003,12(4):381-388. |
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| Authors: | Mu Jing Tao Chao and Du Gong-Huan |
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| Institution: | State Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, China |
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| Abstract: | In this paper we propose and investigate the synchronization of a new chaotic model with time-varying parameters and apply it to improve the security of chaotic communication. In this model, the chaotic system is modulated by both the message and the varying parameters. The varying parameters distort the phase space so heavily that they prevent the carrier from being broken by nonlinear dynamic forecasting method. Theory and simulation experiments with speech signal communication indicate that the receiver can gain a perfect synchronization with the transmitter, and the intruder cannot break down this communication system. We also discuss the robustness of the new communication system. |
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| Keywords: | time-varying parameter chaotic synchronization nonlinear dynamic forecasting |
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