channel_code

曲线拟合和多项式拟合-2，主要用于工程计算，工程优化。(Curve fitting and polynomial fitting, is mainly used for engineering calculations, engineering optimization.)

matlab code 3 dim using fimite differance time domain method

多径理解4,理解多径对信号的影响 ,(four multi-path understanding, understanding of the multi-path signals and understanding of the multi-path signals,)

将1HZ的正弦波与5HZ的正弦波相加后进行傅里叶分析。(To be a 1 HZ ac sine wave and 5 HZ ac added sine wave after the Fourier analysis. )

关于矩阵的一些运算,大家可以参考一下,(Some calculations on the matrix, we can refer to,)

I am a researcher dedicated to developing electronic projects and providing solution to the needy

要点：电力电子器件，电力电子变流技术，变流电路的控制方法，变流技术的发展及其功能(yaodian:dianlidianziqijian,dianlidianzibianliujishu,bianliudianludekongzhjifangfa)

this an algorit for end point detecction , named COPER, inside the article explain the procedure to calculate this algort

说明：  拓扑优化常用优化算法，移动渐进线方法，内含详细的程序说明，指出使用改算法的具体操作(Topology optimization commonly used optimization algorithm, method of moving asymptotes, contains detailed program description, and points out the specific operation of the modified algorithm)

非线性规划算法,基于拉格朗日乘子Hessian矩阵的sqp方法(nonlinear programming algorithm，sqp algorithm based on Lagrange Hessian Matrix)