摘要
调制技术是提高可见光通信(VLC)系统通信性能的关键技术之一。高速LED可见光通信链路的脆弱性以及多径效应带来的码间串扰极大影响了VLC系统通信性能。为了解决这个问题,提出了光正交频分复用(OOFDM)调制技术。总结了O-OFDM调制技术的研究进展,从调制策略上对近年来提出的调制技术进行了分类,分别对不同调制技术进行了机理分析以及对VLC通信性能的影响进行了分析,并对下一步工作进行了展望。
Modulation technology is a key technology to improve the performance of visible light communication(VLC)system.The fragility of high-speed LED visible light communication links and inter-symbol interference caused by multipath effect seriously affect the VLC system performance.To solve this problem,the various optical orthogonal frequency division multiplexing(O-OFDM)modulation technologies are proposed.An overview of OOFDM modulation technologies is summarized and the proposed modulation technologies are classified into four types according to their modulation strategies.Taking different modulation technologies as examples,these strategies are used to analyze the mechanism and the VLC communication performance.In the end,the next step of work is prospected.
作者
宋小庆
王慕煜
邢松
赵梓旭
Song Xiaoqing;Wang Muyu;Xing Song;Zhao Zixu(Department of Weaponry and ControL,Academy of Army Armored Force,Beijing 100072,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第12期100-109,共10页
Laser & Optoelectronics Progress
基金
军队重点实验室建设基金项目(SQDQ09)
关键词
光通信
正交频分复用
码间串扰
频带利用率
误码率
optical communication
orthogonal frequency division multiplexing
inter-symbol interference
frequency utilization
bit error rate
