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用MATLAB实现三维实体箭头的绘制，解决了MATLAB不能绘制实体箭头的问题(Draw 3D arrow with MATLAB)

本文使用三维FDTD算法实现文献《Application of the three_Dimensional Method to the analysis if Planar Microtrip Circuits》IEEE trans. On MTT 1990 38(7)的一个矩形微带贴片天线的S11参数的计算。采用MATLAB编程完成数值计算，并与文中的结果进行了比较。(This three-dimensional FDTD algorithm using the document " Application of the three_Dimensional Method to the analysis if Planar Microtrip Circuits" IEEE trans. On MTT 1990 38 (7) of a rectangular microstrip patch antenna of the S11 parameter of the calculation. Complete the numerical calculation using MATLAB programming, and with the text of the results were compared.)

ASK, FSK, PSK matlab code for modulation

大学生数学建模的书籍以及训练习题，和答案，应该对参赛的选手有一定的帮助。(Mathematical modeling of books and training exercises, and answers for participating players should have some help.)

卡尔曼滤波器的仿真模型图，非常好用，大家可以试一试(Simulation Model Chart of Kalman Filter)

说明：  MATLAB2019官方入门文档，详细介绍了MATLAB2019的使用方法与技巧(The official entry document of matlab2019 introduces the use methods and skills of matlab2019 in detail.)

3GPP标准交织器，南京邮电大学，通信工程系(3GPP standard interleaver)

ber for siso using different modulation schems

归一化模型参考自适应控制的Matlab实例，仿真模拟闭环跟踪方波输入 关键字：归一化 模型参考自适应控制 Matlab 例程 MIT(A Matlab example of normalized model reference adaptive control.The closed-loop system is simulate to follow a square reference signal. Keywords: Normalized Model Reference Adaptive Control, Matlab, Simulink Model, MIT Rule)

Bairstow案例，主要是以matlab軟件來運算標準題型。(Bairstow cases, mainly matlab software to compute the standard questions.)