中文摘要：

为了研究远距离可见光通信（VLc）系统的传输带宽，设计了带有均衡电路的发射端和带有二级运放电路的接收端。搭建了实验电路，从发射端和接收端分析了远距离（VLC）系统的带宽，同时运用Mat—lab软件对基于Gamma—Gamma分布的大气信道容量进行了仿真分析。

英文摘要：

In order to research on bandwidth of long-distance visible light communication （VLC）, this paper proposes a equalization circuit at transmitter and secondary transport circuit at receiver. It analyses the band- width of long-distance VLC with the experimental circuit of transmitter and receiver by buliting the experi- mental circuit, otherwise, the paper simulates the capacity of atmospheric channel by Matlab based on the Gamma-Gamma distribution.