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提出混沌通信中继器设想,建立半导体激光器激光混沌全光中继器物理模型,理论证明了激光混沌中继器系统的同步.数值实现了发射系统、中继器系统、接收系统的混沌同步,分析了系统反馈系数和同步误差以及同步时间的关系.模拟了中继器系统在激光混沌保密通信中的应用,分别给出了具有正弦信号调制频率0·2GHz和数字信号0·2Gb/s速率的混沌通信以及同步误差分析,表明混沌中继器系统确能改善和提高激光混沌通信的解码质量.分析了中继器系统的带宽和20Gb/s高速率数字信号混沌通信以及同步误差,给出了具有正弦信号调制频率0·1—20GHz以及调制速率0·1—20Gb/s带宽的数值结果以及同步误差和调制频率的数值关系,还数值分析了系统的参数失配.
The idea of chaos communication repeater is proposed, and the physical model of laser chaos optical repeater is established, and the synchronization of laser chaos repeater system is proved theoretically.The chaos synchronization of transmitting system, repeater system and receiving system is numerically realized, The relationship between system feedback coefficient and synchronization error and synchronization time is analyzed. The application of repeater system in laser chaos secure communication is simulated. The modulation performance of the system with sinusoidal signal modulation frequency of 0 · 2GHz and digital signal of 0 · 2Gb / s , Chaos communication and synchronization error analysis show that the chaos repeater system can improve and improve the decoding quality of laser chaotic communication.The chaotic communication and synchronization error of the repeater system bandwidth and 20Gb / The numerical results with sinusoidal signal modulation frequency 0 · 1-20GHz and modulation rate 0 · 1-20Gb / s bandwidth as well as the numerical relationship between synchronization error and modulation frequency are also analyzed numerically.