基于日盲紫外光LED的无线光通信性能研究

Performance research on wireless optical communication based on solar blind UV LED

研究基于OOK调制方式的日盲紫外光LED的通信性能,给出了紫外光通信的系统总体结构设计方案,分析了采用直流驱动日盲紫外光LED的性能,设计了数据发送端和接收端电路,在不同条件下对系统进行了实验测试,并对不同通信速率情况下系统通信距离和误码率(BER)进行了分析。结果表明,日盲紫外光LED通信背景干扰越小,系统BER越低;相同距离情况下通信速率越小,BER越低,采用中继通信方式可以有效扩大通信距离。

In order to study the blind UV LED-based con^nunication performance, this paper introduces the structural design of the UV communication system. The performance of the UV LED driven by DC is analyzed. The schematic circuit diagram of transmitter and receiver is designed to realize the data transmission. This blind UV LED-based communication using the OOK modulation is experimentally tested under different conditions. Under different communication rates, the communication range and bit errol＂ rate （BER） of the system are analyzed. The results show that the communication performance of the system is better when the environment noise is low. When the communication distance is unchanged, the smaller communication rate will lead to the lower BER of the communication system. The relay UV communication can effectively expand the communication distance.