基于MPPM调光控制的混合可见光通信系统研究  

Research on hybrid visible light communication system based on MPPM dimming cont rol

作　　者：薛晓妹 李宝龙 李正权 XUE Xiao-mei;LI Bao-long;LI Zheng-quan(School of Internet of Things Engineering Jiangnan University,Jiangsu Wuxi 214122,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡214122

出　　处：《光电子．激光》2020年第6期648-653,共6页Journal of Optoelectronics·Laser

基　　金：江南大学研究生科研与实践创新计划项目(JNKY19_059);江苏省自然科学基金(BK20190582);东南大学国家移动通信国家重点实验室开放基金(2019D18);江苏省光通信工程技术研究中心开放课题(ZXF201902);中央高校自主科研青年专项基金项目(JUSRP11919);无锡科学技术发展基金(H20191001)资助项目。

摘　　要：在本文中,为适应照明的调光需求,提出了一种具有高频谱效率的调光控制方案,这是也是可见光通信(VLC)的关键需求。提出的方案将正交频分复用(OFDM)与多脉冲位置调制(MPPM)相结合,不仅支持高速可见光通信,同时满足了用户对照明源的亮度调节的需求。这种混合调制方法确保系统具有MPPM的调光功能,且引入的OFDM传输可以有效地提高频谱效率。更重要的是,MPPM跟OFDM的传输不会互相干扰,而且接收端对两种信号的检测互不干扰,实现简单。仿真结果表明,该方案可以支持较宽的亮度范围,并支持高频谱无线光通信。In this paper,in order to meet the lig hting dimming requirements,a dimming control scheme with high spectral efficiency is proposed,which is also a key requirement for visible light communication(VLC).The proposed scheme combines orthogonal frequency division multiplexing(OFDM)and multi-pulse position modulation(MPPM),which not only supports high-speed visible light communication,but also meets users′needs for brightness adjustment of lighting sources.The hybrid modulation method ensures that the system has the dimming function of MPPM and the introduction of OFDM transmission can effectively improve the spectrum efficiency more importantly the transmission of MPPM and OFDM will not intenere with each other,and the detection of the two signals by the receiving end does not interfere with each other which is also simple to implement.Simulation results show that the scheme can support a wide range of brightness and support high-spectrum wireless optical communications.

关 键 词：调光控制 可见光通信 正交频分复用 多脉冲位置调制 

分 类 号：TN929.1[电子电信—通信与信息系统]