基于MIMO-OFDM的无线通信系统在煤炭矿井中的应用  

Research on the Application of Wireless Communication System based on MIMO-OFDM in Coal Mines

作　　者：梅蓉[1] 张友能 MEI Rong;ZHANG Youneng(Anhui Vocational and Technical College of Industry and Trade,Huainan,Anhui 232007;Guangdong Institute ofLight Industry and Technology, School of Mechanical and Electrical Technology,Guangzhou,Guangdong 510300)

机构地区：[1]安徽工贸职业技术学院电气与电子工程系,安徽淮南232007 [2]广东轻工职业技术学院机电技术学院,广东广州510300

出　　处：《绵阳师范学院学报》2021年第2期22-27,共6页Journal of Mianyang Teachers＇ College

基　　金：2019年安徽省高校自然科学重点研究项目“基于OFDM的矿井无线通信抗多径衰落技术研究”(KJ2019A1053).

摘　　要：我国是世界上煤炭开采大国,由于煤炭开采环境的特殊性,矿井下的无线通信环境与地面的无线通信环境相差甚远,若直接将用于广阔空间的无线通信技术应用到煤炭矿井中会产生无线信号的多径衰落等不可预期的问题,严重影响矿井下的无线通信质量.本文首先从理论上分析了煤炭矿井中多径无线信道的复杂性,并采用瑞利多径信道模型对其进行仿真建模.采用无线通信中多输入多输出技术(MIMO)和正交频分复用技术(OFDM),设计了一套基于MIMO-OFDM的矿井无线通信系统,以减少多径衰落现象对无线信号的消极影响.最后通过MATLAB软件对该系统进行仿真分析,实验结果证明本系统具有抗多径衰减的功能.As we all know,in terms of coal mining,China is an important nation of the world.The wireless communication in the mine,due to its particularity in environment,is very different from that on the ground.If the wireless communication technology used in the vast space is directly applied to unpredictable problems such as multipath fading of wireless signals in coal mines,the quality of wireless communication underground wound be seriously affected.This article first theoretically analyzes the complexity of multipath wireless channels in coal mines,using the Rayleigh multipath channel model to simulate them.Using MIMO(Multiple Input Multiple Output)technology and OFDM(Orthogonal Frequency Division Multiplexing)technology in wireless communication,a mine wireless communication system based on MIMO-OFDM is designed to reduce the negative impact of multipath fading on wireless signals.Finally,the system is simulated and analyzed by MATLAB software.The experimental results prove that the system has the function of anti-multipath attenuation.

关 键 词：煤炭矿井 无线通信 多输入多输出技术 正交频分复用技术 

分 类 号：TN929.4[电子电信—通信与信息系统] TD655[电子电信—信息与通信工程]