矿井MIMO-OFDM通信系统的信道建模与仿真

在已有矿井MIMO信道模型的基础上,提出了一种基于Nakagami衰落的矿井MIMO空间相关信道模型建模方法。基于Nakagami衰落的非相关MIMO信道,通过计算收发天线间的空间相关性生成MIMO空间相关信道。对所建信道模型的空间相关性及信道容量进行仿真分析。仿真结果证明:MIMO信道的空间相关性随收发端天线单元间距的增大而减小;MIMO信道容量与信道空间相关性以及收发端天线数目有关;减小信道的空间相关性或者增加天线数目,可增加MIMO信道容量。基于Nakagami衰落的矿井MIMO空间相关信道模型适用于矿井无线通信系统。

Channel Modeling and Simulation of Mine MIMO-OFDM Communication System

On the basis of the existing MIMO channel model of mines, this paper presents a modeling method of the MIMO spatial correlation channel model of mines based on Nakagami fading. On the basis of uncorrelated MIMO channels, the MIMO spatial correlation channel is generated by calculating the spatial correlation between the transmitting and receiving antennas. Then, the spatial correlation and channel capacity of the built channel model are simulated and analyzed. The simulation results show that the spatial correlation of the MIMO channel decreases with the increase of the antenna spacing between the transmitter and receiver. The capacity of the MIMO channel is related to the spatial correlation of the channel and the number of transceiver antennas. Reducing the spatial correlation of the channel or increasing the number of antennas can increase the capacity of the MIMO channel. The MIMO spatial correlation channel model of mines based on Nakagami fading can be applied to mine wireless communication systems.