中文说明： FIR 底通和带通滤波器和IIR 底通和带通滤波器，借鉴了主成分分析算法（PCA），搭建OFDM通信系统的框架，包括广义互相关函数GCC时延估计，最终的权值矩阵就是滤波器的系数，包括随机梯度算法，相对梯度算法。
English Description：
End of FIR-pass and band-pass filter and IIR-pass and band-pass filter at the end of, using principal components analysis (PCA), and build a framework for OFDM communication systems, including generalized cross correlation function of GCC TDE, final weight matrix is the coefficients of the filter, including stochastic gradient algorithm, algorithm of relative gradient.