通过对矿井信号系统进行优化,介绍时频MC-CDMA的基本组成机构和主要技术,计算仿真参数,对不同条件下的系统BER性能进行分析。考虑脉冲的影响和多普勒频移的影响,系统BER性能会出现不同程度的变化,合理利用这一特点,能够实现矿井通信系统的优化设计。 Through the optimization of mine signal system, introduces the basic composition of time-frequency MC-CDMA and the main technology, simulation parameters are calculated, and the performance of BER under different conditions is analyzed. Considering the influence of pulse and the influence of Doppler frequency shift, the BER performance of the system will change in varying degrees. The reasonable utilization of this characteristic can realize the optimization design of mine communication system.