基于自适应链路切换的双LED室内可见光通信系统  

Two-LED indoor visible light communication system based on adaptive link switching

作　　者：乔琪[1] 闻凯[2] 

机构地区：[1]淮安信息职业技术学院计算机与通信工程学院,江苏淮安223003 [2]南京航空航天大学自动化学院,南京210016

出　　处：《光通信技术》2018年第2期50-54,共5页Optical Communication Technology

基　　金：江苏省科技支撑计划项目(BE20132190)资助;江苏省科技厅应用基础研究基金(BJ98057)资助;江苏高校品牌专业建设资助项目(201511)资助

摘　　要：为了提高室内可见光通信(VLC)系统的通信链路质量与全移动性,设计了基于自适应链路切换的双LED室内可见光通信系统。提出一种用于高效室内VLC的综合光照布局方法,在照明、接收功率和信噪比(SNR)的约束条件下实现对移动性和链路切换的支持。在移动场景中实现全连通性,强调了视场角(FoV)的设置对连接性能的重要性,使得系统更具实际意义。为了维持和提升移动性场景,在接收功率超出了滞后余量时,启动提出的自适应链路切换,以降低链路切换量和往复率。采用两个LED进行了仿真实验,验证了所提方法的有效性。To improve the communication link quality and mobility of indoor visible light communication system, a dual LED indoor visible light communication（VLC） system based on adaptive link switching is designed. Firstly, a comprehensive illumination layout method for efficient indoor VLC is proposed, which supports mobility and link handover under the constraints of illumination, receiving power and signal to noise ratio（SNR）. The realization of full connectedness in a mobile scene emphasizes the importance of the setting of the field of view（FoV） to the performance of the connection, and this makes the system more practical. In order to maintain and enhance the mobility scenario, the proposed adaptive link handoff is initiated to reduce link handover and reciprocating rate when the power goes beyond the lag margin. The simulation experiment was carried out with 2 LEDs, the effectiveness of the proposed method is verified.

关 键 词：可见光通信 链路切换 双LED 滞后余量 光照布局 

分 类 号：TN929.1[电子电信—通信与信息系统]