channeestimatition

利用小波包函数，对滚动轴承的故障进行分析，最后得出图形，进行故障分析，非常有用。(it is very good,best for wavelet.)

对于规则LDPC码的EXIT图的程序，对优化LDPC起到很好的帮助(For regular LDPC code EXIT chart program optimization LDPC play a very good help)

本书系统地介绍了常见数学问题的各种数值解法及其内在的逻辑联系，并用MATLAB作为算法实现工具，为快速掌握理论打下坚实的基础。本书共分10章，主要内容包括MATLAB概论、MATLAB基础知识、MATLAB数据的图形表示、插值法和数据拟合、数值积分、常微分方程初值问题数值解法、非线性方程求解、求解线性代数方程组和计算矩阵特征值的迭代法、线性方程组的数值解法，以及MATLAB在数值计算中的综合应用。 (This book systematically introduces a variety of numerical solution and its inherent logic of common mathematical problems Contact algorithm using MATLAB as a tool to lay a solid foundation to quickly grasp the theory. )

LMS ALGORITHM CODE TO SUPPRESSION ECHO

Introduction to the Issue on Cooperative Communication and Signal Processing in Cognitive Radio Systems

空间直角坐标（XYZ）和大地坐标（BLH）相互转换matlab函数(Space Cartesian coordinates (XYZ) and geodetic coordinates (BLH) conversion matlab function)

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.

This code is about OLA (overlap Addition method) of Digital Signal. First signal is converted into STFT and after that is recovered back to time domain signal using overlap Addition tecnique

Newton插值，matlab经典例程,数学建模必备(Newton interpolation, matlab classic routines, mathematical modeling necessary)

对数据做eeof处理，得到数据的空间模态和时间系数。(Matlab function of eeof)