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OFDM for Wireless Multimedia Communications

说明：  一个用于求圆周率pi的matlab算法。题目背景：取一长面积为1平方米的正方形白纸，在白纸的内部画一个直径为1米的圆，如下图所示。此圆恰好与正方形的四条边分别切于一点，它的面积是 pi*（1/2）^2 =pi/4 ,然后，你可以抓一大把芝麻，一粒一粒地随便地扔到白纸上。在你扔麦子的过程中可以请一位朋友帮助记录：一共扔了几次？有几次是扔在圆里面？ 实验结束后，你只须用“芝麻落在圆里的次数”除以“一共扔的次数”得到的结果就是圆的面积。则pi就是“圆的面积*4”了 当然，你扔的次数越多，结果就越精确！()

code based on cardiovascular images for extracting intima media layer

麦克风阵语音增强中的子带分解MATLAB源代码(The sub-band decomposition of speech enhancement MATLAB source code)

用于求解并绘制两个直扩信号的二维循环相关函数及对应二维图(two dimensional circle correlation of two direct sequence spread spectrum signals )

短时傅立叶变换应用示例，展示了如何实现三个点频信号在时域上的分离。(Short time fourier transform application example, showing how to set apart three different signals with different frequencies in time domain.)

计算地球物理中重力梯度的数值 给出相应可改变模型的代码(The calculation of the gravity gradient in Geophysics Give the code for the corresponding change model)

Chen s系统多步预报的主程序,还可以很好的移植到其他动力系统(Chen' s system of multi-step prediction of the main program, but also a good ported to other power systems)

说明：  用MATLAB求解遗传算法的旅行商问题，这一类问题在大学生以及研究生的数模竞赛以及日常生活当中尤为重要的，为我们所重视。、近年来，学术界对旅行商问题也逐渐重视起来。(Using MATLAB genetic algorithm for solving the traveling salesman problem, this kind of problem students and graduate students in Mathematical Modeling Contest, and daily life is particularly important for our attention. In recent years, the academic community on the traveling salesman problem is gradually pay attention to it.)

在matlab中生成单边指数调幅信号． y=amexpols(N,t0)Ｎ生成信号的点数，t0函数的起始点，y返回信号．(generated in Matlab unilateral index AM signal. Y = amexpols (N, t0)- N signal points, the starting point t0 function, y return signal.)