LED光通信系统中抑制背景光干扰的电路设计  

Novel circuit resisting ambient light effect on LED visible communication system

作　　者：苗美媛 陈艾琳[1] 马毅煌 高英明[1] 李萍[1] 王金鹏[1] 邹念育[1] 

机构地区：[1]大连工业大学光子学研究所,辽宁大连116034

出　　处：《光通信技术》2016年第8期51-54,共4页Optical Communication Technology

基　　金：2012年辽宁省普通高等教育本科重点支持专业建设项目(辽教发[20121108号1资助;2013年辽宁省教育厅科学技术研究项目(L2013213)资助;2014年辽宁省普通高等教育本科教学改革立项项目(UPRP20140139)资助;2014年大连市科技计划项目(2014All GX050)资助;2014年大连市科技计划(2014A11GX052)资助

摘　　要：针对LED光通信技术,设计了能够抑制室内单一背景光的电路,并针对单方向背景光源提出一种新参考量。先分别计算发射接收端的各项性能,推导出参考量与系统性能间关系;再通过调节各项参数求得合适的参考电阻,借此提高信噪比并降低误码率;最后,仿真验证得出M小于5时误码率能降到10-12,证明信噪比性能与M和参考电阻有直接关系。In this paper, a novel transmitter and receiver circuit design is described which can resist the ambi- ent light effect on LED Visible Communication indoor. A reference quantity to research the specific influence of single ambient light to VLC is proposed. The process started with circuit design on calculated performance of transmitted and received power, relationship on references and quality of system is confirmed, respectively. By using various parameters with adjusting reference resistances, Signal to Noise Rate can be improved. Thereby, Bit Error Rate reduced. Finally, the results shows Bit Error Rate can be reduced to 10^-12 with best distance when M （multiple between ambient light to source light） less than 5 and proved that the Signal to Noise Rate performance is rest with M and reference resistance in simulation.

关 键 词：LED光通信 背景光 电路设计 

分 类 号：TN929.1[电子电信—通信与信息系统]