摘要
针对光混沌保密通信中信息同步条件苛刻的问题,提出一种基于光混沌的双向通信系统。首先,通过半导体激光器(SL)发出的2束激光与部分半透明光学反射镜进行耦合,产生混沌动力,并根据SL的延迟速率方程,设置2个SL的内部参数产生同步的混沌载波;然后,通过监测两端信息的同步误差,并与接收端信息比较,得到解密信息。仿真分析了系统的同步性、信息解密过程、鲁棒性。仿真结果表明,该系统能实现同步通信,恢复出保密信息,鲁棒性较好。
Aiming at the problem of harsh information synchronization conditions in optical chaotic confidential communication,a bidirectional communication system based on optical chaos is proposed.First,two laser beams emitted by a semiconductor laser(SL)are coupled with a partially translucent optical mirror to generate chaotic power,and the internal parameters of two SLs are set to generate synchronous chaotic carriers according to the delay rate equation of SL.Then,the decryption signal is obtained by monitoring the synchronization error of the signals at both ends and comparing with the signals at the receiving end.The synchronization,signal decryption process and robustness of the system are simulated and analyzed.The simulation results show that the system can realize synchronous communication,recover the secret signal and has good robustness.
作者
王飞
周雪芳
WANG Fei;ZHOU Xuefang(School of Communication&Engineering,Hangzhou Dianzi University,Hangzhou 310018,China)
出处
《光通信技术》
2023年第3期52-55,共4页
Optical Communication Technology
关键词
光混沌
同步通信
保密通信
半导体激光器
延迟光速率方程
optical chaos
synchronous communication
secure communication
semiconductor laser
delayed light rate equation
