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希望大家共同探讨问题，共同进步，祝大家学业有成！(U.S. to discuss the issue of hope and common progress, I wish everyone with achieving!)

说明：  线性调频信号的短时傅立叶变换，采用短时傅立叶变换得到线性调频信号的时频分析(linear FM signal short-time Fourier transform, using short-time Fourier transform linear FM signals in the time-frequency analysis)

这是一个债券交易策略。由2条交叉线产生交易信号。( This MATLAB function implements a simple band trading strategy. A band consists of two lines that form the upper and lower boundaries of the band. The upper and lower boundaries are used to to enter and exit trades. For example, if prices fall below the lower boundary a buy signal is generated. )

matlab经典算法方程中关于解方程问题的具体内容 可以给需要的朋友们一些启示(classical algorithm matlab problem solving equations equations on the specific content of a friend in need who can give some inspiration)

主成分分析（pcA）人脸识别，在ORL库上进行测试，产生矩阵为散步矩阵(Principal component analysis (pcA) recognition, tested on the ORL database, resulting in a walk matrix matrix)

对偶单纯形法求解线性规划问题，得到问题的最优解(Dual simplex method for solving linear programming problems, to obtain the optimal solution )

首先分析了瑞利衰落信道统计特性，并在此基础上给出了clarke模型，然后提出仿真方法，包括成形滤波法、jakes仿真模型及其多种改进方法，接着阐述了上述仿真模型的软件实现过程，并利用matlab进行了计算机仿真，然后给出衰落信号的仿真信号和分析结果，仿真结果证明了提出的仿真模型与理论曲线匹配度高，可以很好地模拟无线衰落信道(First analyze the statistical properties of the Rayleigh fading channel, and clarke model is given on this basis, and then asked the simulation methods, including the forming of the filter method, the the jakes simulation model and a variety of improvement, then described the simulation model of the software implementationprocess, and using matlab computer simulation, and then gives the simulated signals and analysis results of the fading signals, simulation results show the proposed simulation model with the theoretical curve to match high, can simulate the wireless fading channel)

Mimo Channel estimation for transmit diversity

说明：  根据滚降系数画出滚降系统频谱，并画出相应的时域波形(According to the roll-off factor to draw the spectral roll-off and draw the corresponding time-domain waveform)

初学CS，自己编了很多算法，试试发出来大家一起交流，基于CS的OMP算法(OMP algorithm based on CS)