一种用于可见光通信的色移键控与高速可变脉冲混合调制方法  

A CSK-HVPM integrated modulation method for visible light communication

作　　者：朱庆炜 唐义[1] 崔璐[1] 骆加彬 张学彬[1] 黄河清[1] ZHU Qingwei TANG Yi CUI Lu LUO Jiabin ZHANG Xuebin HUANG Heqing(Key Laboratory of Photo-electronic Imaging Technology and System, Ministry of Education, School of Optoelectronics,Beijing Institute of Technology, Beijing 100081, China)

机构地区：[1]北京理工大学光电学院光电成像技术与系统教育部重点实验室,北京100081

出　　处：《光学技术》2016年第6期561-566,共6页Optical Technique

基　　金：国家973计划(2013CB329202);工业技术基础项目(J312012B002)

摘　　要：对可见光通信(VLC)中高速可调光调制方法进行了研究。提出了高速可变脉冲调制(HVPM),并与色移键控(CSK)调制混合用于VLC中,以简化CSK调制的严格同步问题,且支持精确调光。对混合调制方法的带宽利用率和误比特率进行了分析与仿真。结果表明:混合调制方法可使通信带宽利用率高于1;相比于可变开关键控(VOOK)、可变脉冲位置调制(VPPM)和多脉冲位置调制(MPPM)等典型可调光调制方式,所提出的混合调制方式具有更优的带宽利用率和高速低误比特率传输性能;在满足可见光通信照明要求时,该混合调制方法更适用于高速数据传输。The high-speed and dimming control modulation method in visible light communication （VLC） is researched. High-speed variable pulse modulation（I-IVPM） is proposed. It is used in VLC combined with color shift keying （CSK） to simplify the strict synchronization problem of CSK and provide accurate dimming control. Analysis and simulation are presented about the bandwidth efficiency and bit error rate. The results show that the integrated modulation method has a bandwidth efficiency higher than 1. Meanwhile, it is superior to some typical dimming control modulations, such as variable on-off keying （VOOK）, variable pulse position modulation （VPPM）, multi pulse position modulation （MPPM） on bandwidth efficiency, and can achieve high-speed communication with low bit error rate and dimming control. Therefore, it is more suitable for high-speed data transmission with illumination constraints in VLC.

关 键 词：可见光通信 色移键控 高速可变脉冲调制 调光 

分 类 号：TN929.1[电子电信—通信与信息系统]