基于WLED室内可见光通信系统功率控制及软硬件平台搭建

发布时间：2018-06-21 21:17

本文选题：WLED + VLC-MIMO　；参考：《深圳大学》2017年硕士论文

【摘要】：随着人们身边移动通信设备数量以几何速度增加、通信质量要求越来越苛刻,无线通信面临着频谱紧缺性危机。在这样的环境下,一门新兴技术可见光通信引起了学术界和工业界的广泛关注。其中,基于白光发光二极管(White Light Emitting Diode,WLED)的室内可见光通信研究更是成为了可见光通信领域热门研究方向。可见光通信(Visible Light Communication,VLC)是以人眼可见、约400THz带宽的可见光谱作为通信频段的一种通信方式。WLED因功耗低,使用寿命长的等优点占据未来室内照明市场,为室内VLC的发展提供了工业基础。基于WLED的室内VLC有诸多优点,其中主要的包括:具有大量未开发且无需授权的频谱资源;照明与通信双重功能,利用现有照明设备部署可见光通信网络设备,减少基建费用;因可见光频率过高,难以穿透物体及墙体,实现室内通信的高安全性。本文就基于WLED室内VLC通信技术进行深入研究,主要研究内容包括以下三个方面:目前基于室内多输入多输出可见光通信(Visible Light Communication Multiple-Input Multiple-Output,VLC-MIMO)的研究大多关注于点对点通信,很少有基于VLC网络的研究,本文提出基于2×2室内VLC-MIMO系统模型的功率分配方案,该方案用于解决VLC网络中在同时同频段内通信中多用户干扰问题,即在VLC-MIMO网络干扰存在时,怎么控制功率实现高通信质量。搭建室内VLC-MIMO系统信道建模仿真平台,用Matlab GUI作为开发工具,以可视化仿真界面进行仿真工作,旨在减少重复性建模工作,提高研究效率。搭建室内VLC系统实验平台,使其能够稳定运行。以Asanka Nuwanpriya博士论文中的硬件平台作为原型,在实际搭建过程中进行改良,完成本实验平台。旨在通过该平台进行实验,实测基于WLED的室内可见光通信速率,为未来在平台中加入算法,提供平台基础。
[Abstract]:With the increase of the number of mobile communication devices at the geometric speed, the demand for communication quality is more and more demanding, wireless communication is facing the crisis of spectrum shortage. In this environment, a new technology visible light communication has aroused widespread concern in the academia and industry. Among them, White Light Emitting D IODE, WLED) indoor visible light communication research has become a hot research direction in the field of visible light communication. Visible light communication (Visible Light Communication, VLC) is visible to human eyes, the visible spectrum of the bandwidth of about 400THz is used as a communication mode of communication band,.WLED has the advantages of low power consumption and long service life, which occupy future indoor photos. The Ming market provides an industrial basis for the development of indoor VLC. The interior VLC based on WLED has many advantages, including a large number of undeveloped and unauthorized spectrum resources; the dual functions of lighting and communication, the deployment of visible light communication network devices using existing lighting equipment to reduce infrastructure costs; because the high frequency of visible light is difficult. In order to penetrate the object and wall, the high security of indoor communication is realized. This paper is based on the WLED indoor VLC communication technology. The main research contents include the following three aspects: at present, the research based on the indoor multi input and multi output visible communication (Visible Light Communication Multiple-Input Multiple-Output, VLC-MIMO) is mostly closed. In point to point communication, there is little research based on VLC network. In this paper, a power allocation scheme based on 2 x 2 indoor VLC-MIMO system model is proposed. This scheme is used to solve the multiuser interference problem in the same frequency band in VLC network, that is, how to control the power to achieve high communication quality in the presence of VLC-MIMO network interference. VLC-MIMO system channel modeling and simulation platform, using Matlab GUI as a development tool and visual simulation interface for simulation work, aiming at reducing repetitive modeling work and improving research efficiency. Building an indoor VLC system experimental platform to enable it to operate stably. The hardware platform in Asanka Nuwanpriya thesis is used as a prototype, in practice In the process of building, the experiment platform is completed and the experiment is carried out through this platform. The indoor visible light communication rate based on WLED is measured, and the platform is provided for the platform to join the algorithm in the future.
【学位授予单位】：深圳大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.1

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