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(1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用Simulink工具编写代码(S-Function方式)，产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。 ((1) in certain wireless channel, the Doppler frequency shift will be caused by wireless channel output signal aliasing. Please describe the resulting aliasing of a variety of reasons (2) wireless channel Doppler spectrum there is a classical spectrum (classic spectrum), please explain such a spectral shape of the mechanism (3) Please use Simulink tools for writing code ( S-Function mode), resulting in a single Path Rayleigh channel, the Doppler spectrum for the classical spectrum, including mobile rate of 120km/h. And please answer: prove that they used computer-generated classical spectrum is correct possible ways.)

Program to find the k - nearest neighbors (kNN) within a set of points.

用matlab语言来实现TSP问题，对于研究TSP问题的人有很大的帮助(TSP problem matlab language of great help for people who study the TSP)

这是由罗华飞编著的MATLAB GUI设计学习手记第二版的电子书籍(This is LuoHuaFei compiled by MATLAB GUI design study the second edition of the journal of electronic books )

该程序用于求解一般汽车动力总成悬置系统的解耦率(The procedure for solving general automotive powertrain mounting system decoupling rate)

二维FDTD模拟 pml吸收边界程序，功能强大，书写详尽(Pml absorbing boundary two-dimensional FDTD simulation program, powerful, writing a detailed)

程序代码matlab关于排队理论系统的，大家指教一下。(Matlab program code on queuing theory system, we know it.)

通信业务量分析理论中的话务量分析预测Erlang B公式中，话务量，出线容量，阻塞率，三者关系。(Communication traffic analysis theory of traffic analysis and forecast Erlang B formula, traffic, outlet capacity, blocking rate, the relationship among.)

利用matlab的gui设计的带有输入和输出功能的界面图形，实现等距线可视性很强，自己独立编写的数据和图形，学习非常值得,实现svm压缩图像，matlab语言(Using GUI of MATLAB to design interface graphics with input and output functions, realizing the visibility of isometric line is very strong, the data and graphics written independently by oneself are very worthwhile to learn, realizing SVM compressed image, MATLAB language)

CVaR的计算，以及cvar最优化的投资组合权重问题(optimal CVAR)