D-S证据理论数据融合，快速扩展随机生成树算法，实现了对10个数字音的识别，搭建OFDM通信系统的框架，基于matlab GUI界面设计,IMC-PID是利用内模控制原理来对PID参数进行计算。-D-S evidence theory data fusion, Rapid expansion of random spanning tree algorithm, To achieve the recognition of 10 digital sound, Build a fr a mework OFDM communication system, Based on matlab GUI interface design, The IMC- PID is using the internal model control principle for PID parameters is calculated.