VLC系统的光源布局设计与仿真研究

在可见光通信系统中,光源具有照明和通信的双重作用.不同的光源布局必然会导致室内不同的光功率分布,因此必须对光源的布局进行合理的设计,使得室内接收光功率的分布趋向均匀.本文给出了室内光通信的传输模型,分析了布局设计与接收光功率分布的关系,并给出了房间内的四个通信光源的最优化布局设计.通过对光源布局与接收功率关系的仿真,验证了本文提出的最优化光源布局设计方法.

Design and Simulation on the Layout of Lighting for VLC System

In visible light communication system, lighting source composed of several plural white LEDs is not only illuminating devices, but also a part of the communication system. The distribution of received power in a room varies with the different layout of lightings. So we need to seek an optimal lighting layout to minimize the range of received power. The channel model of indoor optical communication was shown in this paper. The relation between the layout of lightings and the received optical power was discussed. An optimal design of lightings layout was proposed on the assumption that the VLC system had four lightings devices. The results of computer simulation show that this optimal design is feasible for the visible light communication system.