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室内可见光通信系统的光源布局优化及性能分析

Light Source Layout Optimization and Performance Analysis of Indoor Visible Light Communication System

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摘要

在基于白光发光二极管(LED)的室内可见光通信系统中, 考虑墙面的一次反射, 研究了不同LED拓扑方式下的布局方案。通过调整拓扑分布提出了方阵+圆环布局模型, 该模型可以降低系统的功耗, 在满足室内照明的要求下, 通过功率分配实现了照度和接收面信噪比的动态范围压缩。仿真分析了基于功率分配的方阵+圆环布局模型的照度分布、接收功率分布、信噪比分布及误码率性能, 仿真结果表明:方阵+圆环布局所用光源数虽然比传统方阵布局减少了48个, 但性能仍得到了改善。给出了室内可见光通信链路系统带宽、误码率、距离与信噪比的关系, 可为用户搭建VLC链路提供参考。

Abstract

In the indoor visible light communication (VLC) system based on white light-emitting diode (LED), considering the primary reflection of the wall, the layout schemes of different LED topology are studied. By adjusting the topological distribution, the square array combined with the circular ring layout model is proposed to reduce the power consumption of system, and the dynamic range compressions of illuminance and signal-to-noise ratio (SNR) of the receiving plane are realized by power distribution under the indoor lighting requirements. The illuminance distribution, received power distribution, SNR distribution and bit error rate (BER) performance of the square array combined with the circular ring layout model based on power distribution are simulated and analyzed. The simulation results show that the number of light sources used in the square array combined with the ring layout is reduced by 48 compared with the traditional square array layout, but the performance is still improved. At the same time, the relationships between bandwidth, BER, distance and SNR of indoor VLC link system are given, which can provide reference for users to build VLC links.

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中图分类号:TN929.12

DOI:10.3788/aos201939.0406003

所属栏目:光纤光学与光通信

基金项目:国家重点研发计划(2017YFC0111403)

收稿日期:2018-09-18

修改稿日期:2018-11-08

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陈泉润:中国科学院上海技术物理研究所, 上海 200083中国科学院大学, 北京 100049
张涛:中国科学院上海技术物理研究所, 上海 200083上海科技大学, 上海 201210

联系人作者:陈泉润(qrchen_work@126.com); 张涛(haozzh@sina.com);

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引用该论文

Chen Quanrun,Zhang Tao. Light Source Layout Optimization and Performance Analysis of Indoor Visible Light Communication System[J]. Acta Optica Sinica, 2019, 39(4): 0406003

陈泉润,张涛. 室内可见光通信系统的光源布局优化及性能分析[J]. 光学学报, 2019, 39(4): 0406003

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