最大似然（ML）准则和最大后验概率（MAP）准则，搭建OFDM通信系统的框架，通过反复训练模板能有较高的识别率。- Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Build a fr a mework OFDM communication system, Through repeated training VAIqRNNlate have higher recognition rate.