摘要
基于可见光通信技术原理,设计开发了一款便携式光天线设备,该设备具有带宽大、安全性高和无电磁辐射污染等优点;上下行通信链路均使用1 W白光LED(发光二极管)作为发射光源,能够同时满足照明和通信的需求;设计了发射机电路和高灵敏度接收机电路,对传输数据进行曼彻斯特编解码处理,大幅提升了接收端灵敏度;使用UART(串行异步收发)接口进行数据收发,实现了传输速率为115.2kbit/s、传输距离为3m的全双工数据收发,可满足在电磁辐射敏感的场合进行短距低速通信的需求。
Based on the principle of Visible Light Communication（VLC）technology,we design a portable antenna light equipment,which has the advantages of large bandwidth,high security,no electromagnetic radiation pollution,etc.The device uplink and downlink use a 1 W white Light-Emitting Diode（LED）as an emission source,which can meet the needs of lighting and communications.We also designed transmitter circuits and high-sensitivity receiver circuits,and data transmission,which is based on the Manchester encoding and decoding process and dramatically improves the sensitivity of the reception end.Using Universal Asynchronous Receiver/Transmitter（UART）send and receive data,we demonstrate a transfer rate of 115.2kbit/s and 3mfull-duplex data transmission experiment,which satisfy the requirement of the electromagnetic radiation sensitive occasions for short-range demand low speed communication.
作者
丁昆
张涛
郑伟波
DING Kun ZHANG Tao ZHENG Wei-bo(Shanghai Institute of Technical Physics of the Chinese Academy of Science,Shanghai 200083, China University of Chinese Academy of Science,Beijing 100049, China)
出处
《光通信研究》
北大核心
2017年第1期76-78,共3页
Study on Optical Communications
