fisher

nearestSPD works on any matrix, and it is reasonably fast. As a test, randn generates a matrix that is not symmetric nor is it at all positive definite in general.

16-QAM modulator and demodulator

this file is useful in finding snr ratio

exersice of marcel sidi

用函数输出不同占空比信号的波形和功率谱密度，一段简单的matlab程序(Function output duty cycle signal with different waveforms and power spectral density, a simple piece of matlab program)

matlab使用各种滤波函数实现图片的去噪处理(using the function denoising )

matlab入门手册，能在短时间内学会基本指令的使用。使用方便，适合初学者(matlab classic instruction set, easy to use query, use namely the investigation, can be started quickly.)

在加噪声的情况下，利用pso（粒子群算法）辨识NARMAX模型(实例一）(In the case of additive noise, the use of pso (PSO) identify NARMAX model (Example I))

Matlab与利率期限结构静态估计-NS模型,有图有代码说明(Matlab NS model code express)

说明：  FA算法，能很好的解决函数优化问题，对于解高维函数有较好的实验结果(FA algorithm can solve function optimization problem, the solution of high-dimensional function for better results)