色、时域结合的多光谱混白光WDM-VLC系统  

A Multispectral Mixed White Light WDM-VLC System Combining Color Domain with Time Domain

作　　者：崔璐[1] 唐义[1] 朱庆炜 黄河清[1] 张学彬[1] 

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：《光电工程》2016年第7期79-84,共6页Opto-Electronic Engineering

基　　金：国家973计划(2013CB329202);国家自然科学基金(61571067);工业技术基础项目(J312012B002)资助

摘　　要：由于少有多基色的白光LED,传统波分复用(Wavelength Division Multiplexing,WDM)可见光通信(Visible Light Communication,VLC)系统仅拥有R、G、B三个通道。针对VLC中WDM技术的应用受到白光LED器件限制的问题,本文提出了一种多光谱混光通信方法。该方法根据LED光源颜色特性、多脉冲位置调制特点和混光方式,设计出针对各通道LED光源的多脉冲位置调光调制方案,将色域和时域统一,在多通道通信的同时实现白光输出。本文利用4种单色LED设计出多光谱混光通信验证系统。实验结果表明,系统在4路并行通信的同时,输出白光色温5 500 K,色差小于人眼分辨范围(CIE1976色坐标体系Δu′v′小于0.005),多光谱混光通信是可行的。Since rare multi-primary white LED, traditional Wavelength Division Multiplexing （WDM） visible light communication （VLC） system only has R, G, B three channels. In view of the WDM technology restricted by white LED device in VLC, a method of multispectral mixed light optical communication is proposed. According to the color characteristic of LED light, feature of multi-pulse position modulation （MPPM） and the approach of mixing light, a MPPM dimming modulation is designed for each channel, which uniforms the color and time domain that can realize communication and white light output in the meantime. A multispectral mixed light optical communication system is built using four single-color LEDs. The experimental results show that a white color, 5500K color temperature, is obtained when four channels parallel communication, and chromatic aberration is indecipherable for human eyes （CIE 1976 Au＇v＇〈0.005）. Multispectral mixed light optical communication is feasible.

关 键 词：光通信 可见光通信 多光谱混白光 波分复用技术 多脉冲位置调制 

分 类 号：TN929.1[电子电信—通信与信息系统]