| 引用本文： |
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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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| 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。 |
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| Design of Multiple Input Multiple Output Visible Light Communication System Based on Raptor Coding |
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HAO Bing1, WU Di2, XIAO Wei3
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| (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 |
