自适应OFDM算法在矿井无线通信中的应用研究

Application of Adaptive OFDM Algorithm in Mine Wireless Communication

首先介绍了OFDM技术,详细讨论了OFDM的系统结构和性能;在此基础上提出了自适应OFDM系统,并在信道状况完全已知的假设下,设计了能根据信道特征动态改变其比特和功率获得的自适应OFDM算法,并通过仿真得以验证;最后分析井下无线传输的特征,以此建立适合井下环境的信道模型,通过matlab仿真检验自适应OFDM技术在矿井无线通信过程中的适应性。

Firstly,the OFDM technology is introduced,and the system structure and performance of OFDM are discussed in detail.On this basis,an adaptive OFDM system is proposed.Under the assumption that the channel condition is completely known,an adaptive OFDM algorithm is designed to dynamically change the bit and power of the system according to the channel characteristics and verified by simulation.Finally,the characteristics of underground wireless transmission are analyzed,and the channel model suitable for underground environment is established,and the adaptability of adaptive OFDM technology in the process of mine wireless communication is verified by matlab simulation.