基于MIMO技术的矿井无线通信系统的研究

 本文分析了煤矿井下无线通信系统存在的主要问题，介绍了MIMO技术和正交空时分组编码，设计了两发多收的矿井无线通信系统，对于矿井复杂的传输环境，选择适合多天线技术且具有复杂度低的正交空时分组编码技术，接收端就可以采用最大似然译码，调制采用多进制相移键控。仿真结果表明，采用MIMO技术能有效的降低误码率，提高矿井无线通信系统的可靠性。

The Study of Mine Wireless Communication System Based on MIMO Technology

The paper analyzed the main problems existed in the mine underground wireless communication system, introduced the principle of the MIMO technology and the orthogonal space-time block coding technology. The two-transmit antenna and multiple-receive mine wireless communication system was designed. For mine complex transmission environment, the orthogonal space-time block coding technology with low complexity was used. Besides, the maximum likelihood decoding was employed and multi-phase shift keying was used. The simulation results show that MIMO technology can effectively reduce error rate and improve the reliability of mine wireless communication system.