Light Wave Propagation Model for Indoor Visible Light Communication Systems Employing Small LED Sources

IF 0.6 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Applied Computational Electromagnetics Society Journal Pub Date : 2021-01-01 DOI:10.47037/2021.aces.j.360814

Marwa M. A. Elsaaty, A. Zaghloul, K. Hussein

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引用次数: 3

Abstract

─ The aim of the present work is to build a robust and computationally efficient model for the light wave propagation in indoor visible light communication (VLC) systems. It is assumed that a small (point) LED source is used inside a room of relatively small dimensions (room area ≤ 5m × 5m). The light wave is treated as an electromagnetic wave suffering multiple reflections on the walls of the room. The Geometrical Theory of Diffraction (GTD) is applied for evaluation of the light wave reflection on the rough walls of the room. Also, the present work is concerned with developing a new computational method for the assessment of intersymbol interference (ISI) encountered in such indoor VLC systems. The signal strength, the power of ISI, and hence, the signal-to-ISI ratio (SISIR) are evaluated over the horizontal plane of the mobile units (at a height of about 1m above the room floor). The effects of the room dimensions and some structural parameters such as the reflectance of the side walls on the SISIR are numerically investigated. Index Terms ─ Inter-Symbol Interference (ISI), Visible Light Communications (VLC).

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采用小型LED光源的室内可见光通信系统的光波传播模型

─本研究的目的是为室内可见光通信(VLC)系统中的光波传播建立一个鲁棒且计算效率高的模型。假设在尺寸相对较小的房间(房间面积≤5m × 5m)内使用小型(点)LED光源。光波被视为电磁波，在房间的墙壁上受到多次反射。应用几何衍射理论(GTD)对室内粗糙墙面上的光波反射进行了评价。此外，目前的工作涉及开发一种新的计算方法来评估在这种室内VLC系统中遇到的码间干扰(ISI)。信号强度，ISI功率，因此，信号与ISI比(SISIR)在移动单元的水平面上(在房间地板以上约1米的高度)进行评估。数值研究了房间尺寸和侧壁反射率等结构参数对siir的影响。索引术语─符号间干扰(ISI)、可见光通信(VLC)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Computational Electromagnetics Society Journal 工程技术-电信学

CiteScore

1.60

自引率

28.60%

发文量

审稿时长

9 months

期刊介绍： The ACES Journal is devoted to the exchange of information in computational electromagnetics, to the advancement of the state of the art, and to the promotion of related technical activities. A primary objective of the information exchange is the elimination of the need to "re-invent the wheel" to solve a previously solved computational problem in electrical engineering, physics, or related fields of study. The ACES Journal welcomes original, previously unpublished papers, relating to applied computational electromagnetics. All papers are refereed. A unique feature of ACES Journal is the publication of unsuccessful efforts in applied computational electromagnetics. Publication of such material provides a means to discuss problem areas in electromagnetic modeling. Manuscripts representing an unsuccessful application or negative result in computational electromagnetics is considered for publication only if a reasonable expectation of success (and a reasonable effort) are reflected. The technical activities promoted by this publication include code validation, performance analysis, and input/output standardization; code or technique optimization and error minimization; innovations in solution technique or in data input/output; identification of new applications for electromagnetics modeling codes and techniques; integration of computational electromagnetics techniques with new computer architectures; and correlation of computational parameters with physical mechanisms.