基于硬件预均衡电路的高速可见光通信系统  

High speed visible light communication based on hardware preequalization circuit

作　　者：迟楠[1] 周盈君 赵嘉琦[1] 黄星星[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《科技导报》2016年第16期144-149,共6页Science & Technology Review

基　　金：广东省科技计划项目(2014B010119003)

摘　　要：可见光通信(VLC)是一种新型无线光通信技术,它将照明和通信结合起来,因此具有极其广阔的应用前景,成为近年来研究的热点。目前VLC发展的主要瓶颈在于,LED有限的调制带宽限制了VLC系统的传输速率。为解决这一问题,可见光通信系统中使用了硬件预均衡电路,设计并使用了单双级联桥T幅度均衡器,结合自适应比特功率加载正交频分复用(OFDM)技术,有效地提高了可见光通信系统的调制带宽和传输速率。Visible light communication （VLC） is an emerging wireless optical communication technology, which combines lilt, ruination anti communication. So it has a broad application prospect that makes it a research hotspot in recent years. The main challenge of VLC＇s development is the limited modulation bandwidth of LED, which leads to a limited transmission rate of the VLC system. To solve this problem, hardware pre-equalization circuit is used in the VLC system. We design and use single and cascaded hridged-T amplitude equalizers. By combining the orthogonal frequency division muhiplexing （OFDM） technology, the VLC system＇s modulation bandwidth and transmission rate can be improved efficqently.

关 键 词：可见光通信 硬件预均衡 正交频分复用 

分 类 号：TN929.1[电子电信—通信与信息系统]