digital-signal-processing

三维模式时域有限元求解电磁场，计算电磁学初学者，编写的程序代码，希望可以帮助广大网友(Three-dimensional time-domain finite element method solves electromagnetic field, calculates electromagnetic beginners, compiles the program code, hoping to help the vast number of netizens.)

基于matlab语言实现的dct算法，这种算法简单，易运行，具有很好的交互性(Based on the matlab language dct algorithm is simple and easy to run, with good interaction)

说明：  matlab科学计算继续上传，一共10个章节，由浅入深，几乎包括了绝大部分的科学计算方法以及仿真。本人把部分算法做了优化，更为完善，一共十二个，其中11、12是本人与实验室搭档共同编写，感谢王美女(matlab scientific computing continue to upload a total of 10 chapters, easy-to-digest, almost including most of the scientific method of calculation and simulation. I have done some algorithm optimization, a more perfect, a total of 12, 11,12 which is my partner, prepared jointly with the laboratory, thanks to Wang Mei)

16QAM的调制解调，基带星座图，调制解调之后星座图及比较(16QAM modem, baseband constellation map, after the modem constellation diagram and compare)

说明：  非线性最小二乘法参数估计程序，利用该程序可以对已知解析解的物理过程进行参数估计，估计出线性无关的参数(Parameter estimation of nonlinear least squares method)

利用matlab软件设计并仿真下面的无线通信系统。模拟信源为单音频信号。模拟调制方式为ASK。信道为多径信道（仿真中2径），信道中噪声为加性高斯白噪声。采用相干解调接收。画出了解调器输出端性能曲线与点信噪比SNR的关系。(Software design and simulation using matlab the following wireless communication systems. A single analog audio signal source. Analog modulation is ASK. Channel multi-path channel (simulation 2 diameter), channel noise is additive white Gaussian noise. The use of coherent demodulation receiver. Draw the output of the demodulation performance curve and the point of the relationship between signal to noise ratio SNR.)

一种最短路径算法，floyd是研究最短路的应用(A shortest path algorithm, Floyd is the application of the shortest path)

该MATLAB程序主要用于绘制微分方程的分岔图。(The MATLAB program is mainly used to draw the bifurcation diagram of the differential equations.)

对给定的函数进行最速下降法求最低点的例子(a example for deepest method)

将给定电流和网络画图,可对幅度和分量进行设置(draw picture as the given current and the mesh)