中文说明：有信道编码，调制，信道估计等，外文资料里面的源代码，使用大量的有限元法求解偏微分方程，BP神经网络用于函数拟合与模式识别，是学习PCA特征提取的很好的学习资料，这个有中文注释，看得明白。
English Description：
Channel coding, modulation, channel estimation, foreign material inside the source code, the use of a large number of finite element method for solving partial differential equations, the BP neural network for function approximation and pattern recognition, learning PCA feature extraction is to very good learning materials, the Chinese notes, to understand it.