煤矿井下基于天线选择的MIMO-OFDM系统  

Modeling and Analysis of MIMO-OFDM System Based on Antenna Selection in Coal Mine

作　　者：苏浚钟 谢洪波[1] 冯小婷 王权 潘洪勇 李玲玲 于焱鑫 王恩营[1] SU Junzhong;XIE Hongbo;FENG Xiaoting;WANG Quan;PAN Hongyong;LI Lingling;YU Yanxin;WANG Enying(School of Resources and Environment,Henan Polytechnic University,Jiaozuo 454003,China;Henan Tengboxing Environmental Protection Technology Co.,Ltd.,Pingdingshan 467000,China)

机构地区：[1]河南理工大学资源环境学院,河南焦作454003 [2]河南腾博兴环保科技有限公司,河南平顶山467000

出　　处：《煤炭技术》2023年第6期208-211,共4页Coal Technology

基　　金：河南省产学研合作计划项目(132107000030)。

摘　　要：针对煤矿井下狭窄巷道无线通信环境的特殊性,提出了一种基于天线选择技术的MIMO-OFDM系统模型。系统结合空时编码技术,分析了低信噪比情况下的系统性能,推导了接收天线公式,利用矩阵更加直观地表示天线信号集合。基于煤矿井下巷道空间狭窄的低功率低信噪比实际情况,从信道容量与误码率2方面进行分析,研究了接收天线数量L_(R)=1和L_(R)=2情况下系统性能。仿真结果表明,经过天线选择后的2发1收、2发2收系统分别得到了约2.8 dB与3.5 dB的系统增益,提出的MIMO-OFDM 2发2收系统在低信噪比情况下能够拥有较好的误码率。A MIMO-OFDM system model based on antenna selection technology is presented for the particularity of wireless communication environment in narrow roadways in coal mines.Combining with space-time encoding technology,the system performance under low signal-to-noise ratio is analyzed,and the formula of receiving antenna is deduced.The matrix is used to more intuitively represent the antenna signal collection.Based on the actual situation of low power and low signal-to-noise ratio with narrow space in underground coal mine roadway,the number of receiving antennas Lr=1 and Lr=2 in the system performance are studied from two aspects of channel capacity and bit error rate.The simulation results show that the 2-send-1-receive and 2-send-2-receive systems with antenna selection get about 3 dB and 3.5 dB system gains,respectively.The proposed MIMO-OFDM 2-send-2-receive system can have a good bit error rate at low signal-to-noise ratio.

关 键 词：矿井巷道 无线通信 天线选择 仿真分析 信道容量 误码率 

分 类 号：TD65[矿业工程—矿山机电]