摘要
针对可见光通信系统接收光功率分布不均匀的问题,提出基于人工鱼群算法的发光二极管(LED)光源布局优化模型.围绕矩形和椭圆形2种光源布局方式,以16个LED布局为例,以接收平面功率方差最小化为目标函数,对LED的位置和半功率角值进行优化,并在此基础上,对LED功率因子进一步优化.仿真结果表明:在照度范围和功率均匀性方面,矩形布局要优于椭圆形布局,经优化后得到的矩形布局接收平面功率方差为2.1027 dBm,经调节功率因子后方差达到1.8759 dBm,功率分布均匀性得到明显改善.
To solve the problem of the uneven distribution of received optical power in visible light communication system, an optimization model of light source layout for light emitting diode (LED) based on artificial fish swarm algorithm is proposed.. Taking the rectangular and elliptical layouts with 16 LEDs in each layout respectively as examples, the algorithm is introduced to optimize the position and semi-angles of LEDs on the principle of the smallest variance of the distribution of received optical power. Based on this, the power factor is furtherly optimized. The simulation results show the rectangular layout is better than the elliptical layout in terms of the range of illumination and the evenness of received optical power. Especially, the rectangular layout stands out with the variance of 2.1027 dBm. And its variance can reach 1.8759 dBm after optimizing power factors. Finally, the evenness of power distribution is evidently improved.
作者
翟长鑫
郑茹
刘畅
吕江泊
陈佳奇
ZHAI Changxin;ZHENG Ru;LIU Chang;LYV Jiangbo;CHEN Jiaqi(School of Photo-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China;National Demonstration Center for Experimental Opto-Electronic Engineering Education, Changchun University of Science and Technology, Changchun 130022, China)
出处
《光通信技术》
北大核心
2019年第8期11-15,共5页
Optical Communication Technology
基金
吉林省教育厅“十三五”科学技术研究项目(JJKH20181133KJ)资助
关键词
光通信
可见光通信
人工鱼群算法
矩形布局
椭圆形布局
功率分布均匀性
optical communication
visible light communication
artificial fish swarm algorithm
rectangular layout
elliptical layout
power distribution evenness
