数学方法是部分子空间法，BP神经网络用于函数拟合与模式识别，搭建OFDM通信系统的框架，用于信号特征提取、信号消噪，matlab开发工具箱中的支持向量机，非归零型差分相位调制信号建模与仿真分析 ，包括AHP，因子分析，回归分析，聚类分析。- Mathematics is part of the subspace, BP neural network function fitting and pattern recognition, Build a fr a mework OFDM communication system, For feature extraction, signal de-noising, matlab development toolbox support vector machine, NRZ type differential phase modulation signal modeling and simulation analysis, Including AHP, factor analysis, regression analysis, cluster analysis.