摘要
基于Lyapunov稳定性理论,研究了全局耦合网络的渐近同步,提出了一种全局混沌同步方案,并将其应用于保密通信.提出了一种复杂网络中多个节点之间进行多次加密的保密通信方法,在发送端,有用信号首先与混沌信号进行合成,然后将合成的混沌信号作用于另一个节点进行2次加密;在接收端,发送系统与接收系统同步以后,信道中传输的信号经2级解调后恢复出原有用信号.最后以Lorenz系统为节点进行数值仿真,验证了结论的可靠性.
Based on Lyapunov stability theorem,this paper studies the asymptotic synchronization of globally coupled network,and proposes a method for a global chaos synchronization and for its application to secure communication.It also proposes a novel method of chaos encryption,and proves that after encrypting in the previous two transmitters,information signal can be recovered exactly at the receiver end.Finally,the result of numerical calculation for the global connected networks with Lorenz nodes shows that the theorem is reliable.
出处
《云南民族大学学报(自然科学版)》
CAS
2011年第4期287-291,295,共6页
Journal of Yunnan Minzu University:Natural Sciences Edition
基金
国家自然科学基金(60870008)
甘肃省自然科学基金(3ZS051-A25-030
3ZS-042-B25-049
0803RJZA012
1010RJZA067)
甘肃省高校科研基金(620004)
关键词
复杂网络
混沌同步
保密通信
混沌加密
complex network
chaos synchronization
secure communication
chaos encryption