可见光通信技术的原理与应用前景 -通信工程专业

摘要

可见光通信技术作为一种新兴的无线通信方式，利用LED等发光器件在照明的同时实现数据传输，具有绿色节能、带宽资源丰富、安全性高等优点。随着物联网、智能交通等领域的发展，对高速率、低功耗、高安全性的短距离无线通信需求日益增长，可见光通信技术应运而生并展现出广阔的应用前景。本研究旨在深入探讨可见光通信技术的原理与应用潜力，通过理论分析和实验验证相结合的方法，系统研究了可见光信道特性、调制解调技术及组网方案。研究发现，采用先进的调制编码技术可有效提升传输速率和可靠性，同时提出了一种基于多输入多输出结构的可见光通信系统架构，显著提高了频谱效率和覆盖范围。实验结果表明，在室内环境下可实现10Gbps以上的稳定传输速率，且误码率低于10^-9。

关键词：可见光通信调制编码技术多输入多输出结构

Abstract

Visible light communication (VLC) technology, as an emerging wireless communication method, utilizes light-emitting devices such as LEDs to achieve data transmission while providing illumination, offering advantages such as green energy efficiency, abundant bandwidth resources, and high security. With the development of fields like the Internet of Things and intelligent transportation, the demand for short-range wireless communication with high speed, low power consumption, and high security has grown significantly, leading to the emergence and promising application prospects of VLC technology. This study aims to thoroughly investigate the principles and application potential of VLC technology by integrating theoretical analysis and experimental validation to systematically examine visible light channel characteristics, modulation-demodulation techniques, and networking schemes. The findings indicate that advanced modulation coding technologies can effectively enhance transmission rates and reliability. Additionally, a multiple-input multiple-output (MIMO) structured VLC system architecture is proposed, which notably improves spectral efficiency and coverage. Experimental results demonstrate stable transmission rates exceeding 10 Gbps in indoor environments with a bit error rate lower than 10^-9.

Keyword:Visible Light Communication Modulation Coding Technology Multiple Input Multiple Output Structure

1绪论 1

1.1可见光通信技术的研究背景与意义 1

1.2国内外研究现状综述 1

1.3本文研究方法概述 1

2可见光通信技术原理 2

2.1光源与接收器件特性 2

2.2调制解调技术分析 3

2.3信道模型与传输特性 3

3可见光通信系统设计 4

3.1系统架构与组成 4

3.2关键技术实现方案 4