硬件加密的扩频通信方案  

Spread spectrum communication based on hardware encryption

作　　者：萧宝瑾[1] 仝海丽[1] 张建忠[2] 张朝霞[2] 王云才[2,3] 

机构地区：[1]太原理工大学信息与通信工程系,太原030024 [2]太原理工大学物理与光电工程系,太原030024 [3]山西大学量子光学与光量子器件国家重点实验室,太原030006

出　　处：《物理学报》2011年第8期81-86,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60927007;60872019);量子光学与光量子器件国家重点实验室基金(批准号:200903)资助的课题~~

摘　　要：提出了一个利用混沌激光源产生1Gbit/s的随机序列作为扩频码的方案.理论分析表明,该随机序列克服了伪随机序列的周期性,在扩大扩频码容量的同时实现了扩频码可变,提高了通信安全性.利用Simulink软件对该扩频系统进行仿真.结果表明,当信息速率一定时,扩频增益越大,误码率越低,与理论结果相符.与传统的扩频系统相比,该方案在提高系统抗干扰能力的同时也增强了保密性.The scheme of 1 Gbit/s random sequence generated by chaotic laser as spreading code is proposed.Theoretical analysis indicates that the pseudo random sequence exhibited periodic behavior is eliminated by the random sequence and the capability of spreading code is enlarged.Meanwhile,the communication security can be improved by variable spreading code.The corresponding spread spectrum system is numerically simulated by Simulink software and the results demonstrate that the greater the used spreading gain,the lower the obtained error rate will be when the information speed is constant,which is consistent with the theoretical results.The anti-jamming ability of the spread spectrum system is strengthened and the security is enhanced compared with those of the traditional spreading system.

关 键 词：扩频通信 随机序列 混沌激光源 

分 类 号：TN914.42[电子电信—通信与信息系统]