基于直接序列扩频的可见光通信系统  

Visible Light Communication System Based on Direct Sequence Spread Spectrum

作　　者：袁学光[1] 张阳安[1] 张锦南[1] 张明伦[1] 

机构地区：[1]北京邮电大学信息光子学与光通信国家重点实验室,北京100876

出　　处：《光学学报》2014年第13期61-65,共5页Acta Optica Sinica

基　　金：基金项目：国家863计划（2013AA013601）、青年科研创新计划专项（2012RC0407,2012RC0406）

摘　　要：提出了一种基于直接序列扩频的可见光通信系统，扩频通信的方法以香农信息论作为理论基础，对可见光通信系统中扩频通信理论进行了分析，理论分析结果表明扩频通信方法可以缓解可见光通信系统的多径损耗，并且提高可见光通信系统安全性。对基于直接序列扩频的可见光通信系统进行了仿真，仿真结果表明系统性能相比直接检测系统有一定提高，扩频通信技术对提高可见光通信系统可靠性具有实际的意义。A direct sequence spread spectrum scheme for visible light communication system is proposed. The spread spectrum scheme is based on the Shannon theorem in information theory. Theoretical analysis result demonstrates that spread spectrum technology can mitigate the effect of multipath and improve the security in visible light communication system, The simulation results show that the performance of direct sequence spread spectrum based system is improved comparing with the directly detecting system without spread spectrum. Spread spectrum is a practical approach to improve the reliability of the visible light communication system.

关 键 词：光通信 可见光通信 扩频 直接序列扩频 

分 类 号：TN929.1[电子电信—通信与信息系统]