是学习PCA特征提取的很好的学习资料，已调制信号计算其普相关密度，cordic算法的matlab仿真。- Is a good learning materials to learn PCA feature extraction, Modulated signals to calculate its density Pu-related, cordic matlab simulation algorithm.

基于人工神经网络的常用数字信号调制，现代信号处理中谱估计在matlab中的使用，用于信号特征提取、信号消噪。- The commonly used digital signal modulation based on artificial neural network, Modern signal processing used in the spectral estimation in matlab, For feature extraction, signal de-noising.