FFT

this is the standard pso code

matlab编写的关于fdtd编程的步骤和具体方法，适合初学者，且直接是三维结构，用mur吸收边界条件(Matlab fdtd prepared by the programming steps and concrete measures for beginners, which is the three-dimensional structure directly with mur absorbing boundary conditions)

fault detection and classification

MATLAB振动信号处理教程Vibration signal processing MATLAB Tutorial(Vibration signal processing MATLAB Tutorial Vibration signal processing MATLAB Tutorial)

this is about powerfactor correction circuit

matlab2010开发环境，实现高斯金字塔，修改图片地址即可，测试成功，代码注释详细(matlab2010 development environment to achieve the Gaussian pyramid, modify the picture address test is successful, the code comments in detail)

《Matlab工具箱应用》 张金明等编，原书扫描件(Applications, edited by Zhang Jinming Matlab toolbox, the original book scan)

PID 控制算法及扩展算法的仿真代码，建议学习控制的同志参阅一下(PID control algorithm and the expansion of the simulation algorithm code, the proposed learning control comrades see what)

这是一个经典的粒子滤波程序，供初学者学习。(This is a classical particle filter program, for beginners to learn.)

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)