可见光通信中的白光LED非线性噪声分析  

Nonlinear Noise Analysis About White LED in Visible Light Communication

作　　者：王志斌[1] 董伟 任英[1] 武素莲 顾而丹[1] WANG Zhi-bin1, DONG Wei1, REN Ying1, WU Su-lian2, GU Er-dan1(1. School of Electrical Engineering,Yanshan University,Qinhuangdao 066004, China;2. Zhejiang Hangshen Electric Group Corp. , LTD, Hangzhou 311234, Chin)

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004 [2]浙江杭申电气集团有限公司,浙江杭州311234

出　　处：《发光学报》2018年第5期745-750,共6页Chinese Journal of Luminescence

基　　金：国家自然科学基金青年科学基金(61107039);河北省自然科学基金青年基金(F2012203202)资助项目~~

摘　　要：针对LED的非线性特征,提出一种计算OOK调制可见光通信系统的非线性噪声的方法,进而求出传输信噪比以及误码率。运用Matlab仿真分析得出LED直流偏置点和误码率的关系曲线,并通过可见光通信系统图像传输实验验证了该曲线的正确性。该曲线对于LED的型号和最佳偏置点的选取具有很好的指导意义。An algorithm of nonlinearity noise led by LED nonlinearity was proposed. The signal-tonoise ratio and bit error rate of visible light communications system with OOK modulation could be obtained through the algorithm. The curve about the relation between LED bias point and bit error rate were plotted with Matlab simulation. The results were proved by visible light communication system image transmission experiment. The curve has great significance on the choice of proper LED model and bias point about VLC system experiment.

关 键 词：可见光通信 白光LED OOK调制 非线性噪声 误码率 

分 类 号：TN929.12[电子电信—通信与信息系统]