大功率LED空间光强对VLC幅频特性的影响  

Effect of high-power LED spatial light intensity on amplitude-frequency characteristics of VLC

作　　者：徐子轩[1,2] 梁海莲[1,2] 钟镇[3] 何磊[3] 顾晓峰[1,2] 

机构地区：[1]江南大学轻工过程先进控制教育部重点实验室,江苏无锡214122 [2]江南大学物联网工程学院,江苏无锡214122 [3]中国科学院苏州纳米技术与纳米仿生研究所,江苏苏州215123

出　　处：《光通信技术》2011年第6期19-22,共4页Optical Communication Technology

基　　金：中央高校基本科研业务费专项资金(JUSRP20914;JUD-CF10031)资助

摘　　要：提出了一种基于大功率LED阵列VLC系统的收发通路。通过对LED光源特性的分析和讨论,建立了一种基于LED阵列的空间光强分布模型,利用该模型并结合实际电路测试研究了大气信道距离对接收信号幅频特性的影响,指出了VLC系统接收电路的幅频特性不随光强变化而变化。A VLC system transmitter and receiver based on the high-power LED array was proposed.A spatial light intensity distribution model of the LED array was established by analyzing the characteristics of LED light source.The effect of air channel distance on the amplitude-frequency characteristics of the received signal was then studied on the basis of the established model and practical circuit testing results.Finally,it was pointed out that amplitude-frequency characteristics of VLC receiver didn＇t change with the spatial light intensity.

关 键 词：可见光通信 大功率发光二极管阵列 光强分布 幅频特性 

分 类 号：TN929.11[电子电信—通信与信息系统]