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该文档详细描述了FFT的物理意义，并附有一个正弦波叠加的例子和相关Matlab程序.(The document describes the physical meaning of FFT in details,with a superimposed sine wave and related Matlab examples )

当空间调制系统传输5bits信息时，采用8QAM，16QAM调制方式的比较。(When the spatial modulation 5bits information transmission system, the use of 8QAM, 16QAM modulation of the comparison.)

arcserver+C#实现换冲洗分析功能，刘光书本源代码实现。(arcserver+C# flush analysis capabilities to achieve change, Liu books source code.)

交错并联型双反激逆变器的saber仿真文件，自己做的一个项目的前期方案论证、原理验证的文件，做电力电子的朋友都知道它的好。(Interleaved dual flyback inverter saber simulation files, pre-program yourself to do a demonstration project, the principle of verification of documents, power electronics make friends all know it s good.)

高斯脉冲波源下的磁偶极子场的计算，并与fdtd法进行了比较(The analytical solution to the Hertzian Dipole (with a Gaussian pulse source) problem for comparison with the FDTD simulation.)

计算声压级及滤波器设计的，具有很重要的作用( One-third-octave band frequency analyser)

说明：  改程序用于在实验中所测量的振动、噪声、水声以及数值模拟监测所得到的信号，实现信号的自相关分析。(The modified program is used to measure the vibration, noise, underwater sound and the signal obtained from the numerical simulation monitoring in the experiment to realize the autocorrelation analysis of the signal.)

实现2D—fft的matlab程序 以二维时间序列为基(Achieve 2D-fft matlab program)

in this file programm of finding pca analysis is given

PCA算法在matlab上的实现，包括特征向量提取，降维和数据重构(PCA algorithm)