基于光电反馈延迟的多点耦合混沌同步和通信

发布时间：2019-06-21 15:48

【摘要】：为了实现稳定的、可以同时同步的多点混沌通信,提出一种基于光电反馈延迟的双向混沌通信模型和多点耦合的混沌同步模型。在双向混沌通信模型中引入了时间延迟和混沌调制信息加密技术,增加了系统的安全性。数值分析了系统的同步性能、安全性能和通信性能,研究结果表明,系统能够历经很短的时间实现高质量的、稳定的同时同步,实现双向通信。并且延迟时间、信息信号功率、激光器光信号功率、相位的改变在其他参数匹配的情况下,不会降低系统的同步性能,即系统的信息信号功率、光信号功率、延迟时间、相位均可作为系统的密钥,提高系统的安全性。这种双向混沌通信模型可以拓展为符合一定拓扑结构的多点耦合混沌通信模型,并且推测随着网络中节点数的增加,系统的复杂度增加。
[Abstract]:In order to realize stable and simultaneous synchronization of multi-point chaotic communication, a bidirectional chaotic communication model based on optoelectronic feedback delay and a chaotic synchronization model of multi-point coupling are proposed. Time delay and chaotic modulation information encryption technology are introduced into the bidirectional chaotic communication model, which increases the security of the system. The synchronization performance, security performance and communication performance of the system are analyzed numerical. The research results show that the system can achieve high quality, stable simultaneous synchronization and two-way communication in a very short time. And the change of delay time, information signal power, laser optical signal power and phase can not reduce the synchronization performance of the system under the condition of other parameters matching, that is, the information signal power, optical signal power, delay time and phase of the system can be used as the key of the system to improve the security of the system. This bidirectional chaotic communication model can be extended to a multi-point coupled chaotic communication model in accordance with a certain topological structure, and it is inferred that with the increase of the number of nodes in the network, the complexity of the system increases.
【作者单位】：华中科技大学自动化学院;
【分类号】：TN918;O415.5

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