一种基于半导体照明的无线通信系统  

Design of an indoor wireless communication system with white LEDs

作　　者：朱琳[1] 刘博[1] 杨宇[1] 陈雄斌[1] 裴为华[1] 陈弘达[1] 

机构地区：[1]中国科学院半导体研究所集成光电子学国家重点实验室,北京100083

出　　处：《高技术通讯》2010年第8期863-867,共5页Chinese High Technology Letters

基　　金：863计划(2007AA01Z2A5;2007AA03Z454);中国博士后科学基金(20070420833);国家科技支撑计划(2009BAK43B36)资助项目

摘　　要：利用15W大功率白光发光二极管(LED)作为通信光源,研制出一种基于半导体照明的无线通信演示系统,该系统具有可用带宽高、保密性好、无电磁辐射等优点,可以在进行室内照明的同时实现文本、图像和声音等数据的传送。该系统采用开关键控(OOK)调制方式,在波特率为115.2kbps时支持最远为3.2m的通信距离,接收信号的误码率<10^(-6)。An indoor wireless communication system based on the RS-232 protocol is presented. The system could realize text, picture and music transmission during lighting by using commercial LEDs and photodiodes. Compared with radio frequency （RF） techniques, it has many advantages such as large potential bandwidth, high security, no electromagnetic radiation, etc. On-off keying （OOK） was applied to modulate the light emitted by the LEDs without observable flicker. The communication range of the system is 3.2m at a baud rate of 115.2kbps with the error bit rate being less than 10^-6, which is about the distance from ceiling to floor.

关 键 词：无线通信 RS-232 开关键控(OOK) 射频(RF) 半导体照明 

分 类 号：TN92[电子电信—通信与信息系统]