A new modulation scheme of visible light communication  

作　　者：刘洋 章国安 

机构地区：[1]School of Electronics and Information Nantong University

出　　处：《Optoelectronics Letters》2014年第4期273-276,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61371113);the Ministry of Transport Application Foundation Research Project(No.2013-319-825-110);the Graduate Research and Innovation Plan Project of the Universities of Jiangsu Province(No.CXZZ13_0689);the Graduate Research and Innovation Plan Project of Nantong University(No.YKC13001)

摘　　要：In order to use white light emitting diode(LED) as a lighting source and communication part, a new modulation scheme called reverse dual header pulse interval modulation(RDH-PIM) is proposed for indoor visible light communications based on the analyses of the structures of on-off keying(OOK), pulse position modulation(PPM), digital pulse interval modulation(DPIM) and dual header pulse interval modulation(DH-PIM). After analyzing and comparing the symbol structure, bandwidth requirement and average transmission power of different modulation methods, the slot error rate is derived. Simulation results show that OOK has the minimum bandwidth, while RDH-PIM has the highest average transmission power and its bandwidth efficiency is obviously better than those of PPM and DPIM. Hence, RDH-PIM is superior in optical wireless communication systems.In order to use white light emitting diode （LED） as a lighting source and communication part, a new modulation scheme called reverse dual header pulse interval modulation （RDH-PIM） is proposed for indoor visible light communications based on the analyses of the structures of on-off keying （00K）, pulse position modulation （PPM）, digital pulse interval modulation （DPIM） and dual header pulse interval modulation （DH-PIM）. After analyzing and comparing the symbol structure, bandwidth requirement and average transmission power of different modulation methods, the slot error rate is derived. Simulation results show that OOK has the minimum bandwidth, while RDH-PIM has the highest average transmission power and its bandwidth efficiency is obviously better than those of PPM and DPIM. Hence, RDH-PIM is superior in optical wireless communication systems.

关 键 词：脉冲位置调制 可见光通信 数字脉冲间隔调制 白色发光二极管 光无线通信系统 DPIM 符号结构 最小带宽 

分 类 号：TN929.1[电子电信—通信与信息系统]