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分析了煤矿井下无线通信系统复杂的传输环境和主要存在的问题,介绍了OFDM技术抗多径衰落的原理及特点,通过建立OFDM基带调制系统,使用16QAM调制方式对系统进行仿真,得出误码率曲线。
This paper analyzes the complex transmission environment and the main problems existing in underground coal mine wireless communication system. The principle and characteristics of anti-multipath fading in OFDM technology are introduced. By establishing OFDM baseband modulation system and using 16QAM modulation system to simulate the system, Rate curve.