基于光OFDM的室内可见光多媒体广播系统  

Indoor Visible Light Multimedia Broadcasting System Based on Optical OFDM

作　　者：李智[1] 张超[1] 孙德栋 张绍辉 辛军 LI Zhi;ZHANG Chao;SUN Dedong;ZHANG Shaohui;XIN Jun(Department of Electronic Engineering, Tsinghua University, Beijing 100084, China;State Grid Information ＆ Telecommunication Group Co. Ltd., Beijing 102209, China;State Grid Henan Electric Power Company, Zhengzhou Power Supply Company, Zhengzhou 450000, China)

机构地区：[1]清华大学电子工程系,北京100084 [2]国网信息通信产业集团有限公司,北京102209 [3]国网河南省电力公司郑州供电公司,河南郑州450000

出　　处：《电视技术》2018年第1期67-72,共6页Video Engineering

基　　金：国家电网科技项目(SGHAZZ00FCJS1500238)

摘　　要：区间干扰是室内多媒体广播传输最主要的影响因素之一。本文中提出了一种基于光OFDM的室内可见光多媒体广播系统。该系统一方面能够有效避免区间干扰,提高频谱效率,另一方面能够有效提高整个系统的功率效率,并且保证室内照明效果。本文针对所设计的可见光多媒体广播系统,研究了相关参数对系统性能的影响,仿真并分析了系统光照效果、信噪比、频谱效率以及功率效率等性能指标,并与其它系统进行比较,验证了系统在干扰抑制和功率效率方面的优势。One of the most important adverse effects in indoor multimedia broadcasting systems is co-channel interference（CCI）. In this paper, an indoor visible light multimedia broadcasting system which bases on optical orthogonal frequency division multiplexing（O-OFDM） is proposed, which can effectively mitigate the interference and increase the average spectral efficiency. The proposed system also can greatly improve the overall system power efficiency while ensuring the indoor lighting quality. The performance of the system is analyzed. The signal-to-noise-ratio（SNR）, spectral efficiency, power efficiency and lighting quality of the system are studied based on the considerations of the important parameters. The system is proven to be better than other systems in many aspects.

关 键 词：室内多媒体广播 可见光通信 光OFDM 区间干扰 

分 类 号：TN949.6[电子电信—信号与信息处理]