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  • 郝兵,吴迪,萧威.基于Raptor编码的多输入多输出光通信系统设计[J].广西科学,2024,31(1):119-125.    [点击复制]
  • HAO Bing,WU Di,XIAO Wei.Design of Multiple Input Multiple Output Visible Light Communication System Based on Raptor Coding[J].Guangxi Sciences,2024,31(1):119-125.   [点击复制]
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基于Raptor编码的多输入多输出光通信系统设计
郝兵1, 吴迪2, 萧威3
0
(1.河套学院数学与计算机系, 内蒙古巴彦淖尔 015000;2.哈尔滨工程大学计算机科学与技术学院, 黑龙江哈尔滨 150001;3.安徽理工大学电气与信息工程学院, 安徽淮南 232001)
摘要:
为了提高可见光通信(Visible Light Communication, VLC)系统的复用增益,本文提出一种基于多输入多输出(Multiple Input Multiple Output, MIMO)的固定比例像素化VLC系统。系统首先执行空间-角度映射,使数据的传送可在角域中进行;同时利用Raptor编码方法来跟踪由于窗口截断而引起的数据信道特性变化;然后对于使用高速相机捕捉到的一系列时变图像,利用散景效应获得所有链路距离上的固定比例图像。实验利用液晶显示器和高速相机,对所提出的VLC系统进行了验证。与传统的像素化MIMO系统相比,本文所提出的系统在未对准朝向的情境下具有更高的鲁棒性,从而在多路复用场景有着广泛的应用前景。
关键词:  多输入多输出  可见光通信  Raptor编码  空间-角度映射  固定比例
DOI:10.13656/j.cnki.gxkx.20240417.012
投稿时间:2021-12-12修订日期:2022-01-07
基金项目:国家自然科学基金项目(61702008),内蒙古自治区教育厅科技项目(NJZC17379)资助。
Design of Multiple Input Multiple Output Visible Light Communication System Based on Raptor Coding
HAO Bing1, WU Di2, XIAO Wei3
(1.Department of Mathematics and Computer Science, Hetao College, Bayannur, Inner Mongolia, 015000, China;2.College of Computer Science and Technology, Harbin Engineering University, Harbin, Heilongjiang, 150001, China;3.College of Electrical and Information Engineering, Anhui University of Science & Technology, Huainan, Anhui, 232001, China)
Abstract:
In order to improve the multiplexing gain of the Visible Light Communication (VLC) system,a fixed-ratio-pixelated VLC system based on Multiple Input Multiple Output (MIMO) is proposed in this article.The system first performs space-angle mapping,so that data transmission can be carried out in the angular domain;at the same time,the Raptor coding method is used to track the change of data channel characteristics caused by the truncation of the window.Then,for a series of time-varying images captured by a high-speed camera,the system uses the scatter effect to obtain a fixed-scale image over all link distances.In the experiment,the proposed VLC system is verified by using liquid crystal displays and high-speed cameras.Compared with the traditional pixelated MIMO system,the proposed system has higher robustness in the case of misalignment,so it has a wide application prospect in multiplexing scenarios.
Key words:  multiple input multiple output  Visible Light Communication (VLC)  Raptor coding  spatial-angle mapping  fixed ratio

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