正确率可以达到98％，基于matlab GUI界面设计,搭建OFDM通信系统的框架，包含特征值与特征向量的提取、训练样本以及最后的识别，FIR 底通和带通滤波器和IIR 底通和带通滤波器，包括最小二乘法、SVM、神经网络、1_k近邻法。- Accuracy can reach 98 , Based on matlab GUI interface design, Build a framework OFDM communication system, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Including the least squares method, the SVM, neural networks, 1 _k neighbor method.