Abstract: According to the current development status of mine mobile communication, aiming at the variability of statistical characteristics of fast fading multipath signal amplitude in a mine wireless channel, this paper puts forward a Nakagami amplitude statistics fading channel simulation model based on the Matlab. And using this model, the transceiver at the same transmission distance in the straight empty roadway, simulated fading effect of Nakagami for 900 MHz, 1 800 MHz and 2.45 GHz bands of the electromagnetic wave, simulation model is verified by using QPSK signal which is inputted. The results demonstrate that the model has the advantages of simple process, strong operability and more precise description of mine mobile communication channel fading process, the model is of great reference value to improvement in the overall performance of the mine mobile communication.

Key words: mine mobile communication, multipath fading, Nakagami distribution, channel models

摘要： 根据目前矿井移动通信的发展状况，针对矿井无线信道快衰落多径信号幅度统计特性的可变性，提出了一种基于Matlab的Nakagami幅度统计衰落信道仿真模型。利用该模型，对空直巷道中收发信机在相同传输距离下，针对900 MHz、1 800 MHz和2.45 GHz频段的电磁波对Nakagami衰落的影响进行了仿真，并将QPSK信号作为输入信号进一步的验证。结果表明，该模型具有创建过程简单，可操作性强，对矿井移动通信信道衰落过程描述较为精确等优点，这对矿井移动通信整体性能的提高具有较大的参考价值。

关键词: 矿井移动通信, 多径衰落, Nakagami分布, 信道建模