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HHT的MATLAB程序实现，对每个语句都有注释和说明。(HHT of the MATLAB program for each statement has notes and instructions.)

PNN神经网络聚类法的MATLAB的源代码，自己编写的，很实用，希望对大家有所帮助。(PNN neural network clustering method for MATLAB source code, I have written, very practical, we want to help.)

说明：  利用多尺度小波分解侦测时间序列中奇异点位置(multiscale wavelet decomposition time sequence detection singular position)

对于控制系统的数学描述和基于matlab进行建模(Control system for the mathematical description and modeling based on matlab)

This code is related to the course Digital Communications. It reproduce the error probability as a function of the SNR per bit for 16-QAM. Enjoy it!

主成分分析 求标准化后的协差矩阵,再求特征根和特征向量(main analysis)

说明：  用Matlab与C的混合编程写的FFT（快速傅立叶变换）算法，具有运算快，易于使用和理解的优点。(Using Matlab and C programming to write a mixture of the FFT (Fast Fourier Transform) algorithm, with the operator fast, easy to use and understand the advantages.)

说明：  有两个矩阵a和b，均为2行3列。求矩阵之和。(There are two matrices a and b, are two rows 3. Demand matrices, and.)

在一张表中标注了CTFT，DTFT，DFT之间的对应关系，列出公式，给出了简单认证，同时加上文字说明(Marked in a table of correspondence between CTFT, DTFT, DFT between lists formula gives a simple certification, plus text)

HHT法国人算法中，一个谱分析时绘图的函数(French HHT algorithm, a spectral analysis of the function mapping)