K-SVD

This code simulates analog signal in matlab

说明：  采用混沌和小波相结合的方式实现的图像加密matlab程序(Using chaos and wavelet methods to achieve a combination of image encryption matlab program)

说明：  该matlab程序能实现LDPC码的编码和解码，能在matlab7.0运行(The matlab program to achieve encoding and decoding of LDPC codes can be run in matlab7.0)

projection and backprojection

说明：  用MATLAB/SImulink 搭建的单相光伏并网逆变器仿真，用PR电压环控制器进行控制，包含2012-2018所有版本(Simulation of single-phase photovoltaic grid connected inverter built by Matlab / Simulink, controlled by PR voltage loop controller, including all versions of 2012-2018)

RS编译码的matlab码源，经测试好用。(RS codec matlab source code)

引入变异算子的PSO，希望对大家的学习研究有所帮助。(Mutation of the PSO, we hope to help the study of learning.)

实现三次样条插值信号包络线，本人在EMD算法时用到，效果已验证(Realize the cubic spline interpolation signal envelope, the effect is very good.)

companding technique for papr

PWM project design 12 volt inverter circiut DIAGRAM