time_varying_ofdm

最近在研究用友软件时收集到的资料，EAI.(UF software recent study collected information, EAI.)

把信号分为重叠或不重叠的小段，对每小段信号序列进行功率谱估计，然后取平均值作为整个序列的功率谱(The signal into overlapping or non-overlapping short paragraphs, short paragraphs on each of the power spectrum estimation signal sequence, and then averaged Fourier power spectrum as a whole)

daqaxis help for national instruments

说明：  用于计算幂率分布幂指数程序，在给定的一组分布中，判断该分布是否服从幂率分布(Used to calculate the power law distribution of power index procedure)

基于Harris原理的亚像素角点坐标检测Matlab程序；直接运行click_calib .m文件即可获得亚像素级角点坐标，附录Ⅱ中的其它函数文件均会被click_calib .m文件调用。(Based on the principle of subpixel Harris corner coordinates detection Matlab procedures run directly click_calib. M file to obtain sub-pixel corner coordinates, Appendix Ⅱ other functions in the file will be click_calib. M file called.)

编程 图像处理MATLAB是矩阵实验室（Matrix Laboratory）的简称，是美国MathWorks公司出品的商业数学软件，用于算法开发、数据可视化、数据分析以及数值计算的高级技术计算语言和交互式环境，主要包括MATLAB和Simulink两大部分。 (image coverting)

读入图像文件，生成索引图像 灰度图像 黑白图像 (Read into the image file, generate an index image gray image black and white images)

The document contains a turbo code descrription

将两个矩阵的卷积运算转换为构造的新矩阵的相乘运算(The two matrix of convolution operation into the matrix multiplication)

如何用matlab绘制李雅普诺夫指数的方法，有助于初学者的学习(The method of how to draw the Lee Yap Andrianof index by MATLAB, will help beginners to learn)