ofdmda

说明：  该文件包括几篇比较关于LDPC编码核心的基础读物，还有关于LDPC开发的MATLAB仿真库和运用该库所进行的一些仿真源码(The documents include a few more LDPC coding on the basis of the core reading, also on the development of the LDPC MATLAB simulation library and use the library for the simulation source code)

有关信号的循环谱计算，内容详细，含注释！！！(Signal cyclic spectrum calculation, detailed content, including the Notes! ! !)

从经典功率谱估计周期图法原理入手，从理论上分析了其存在的局限性，借助Welch算法对其进行修正。依靠Matlab强大的数值分析和信号处理能力，进行实验仿真，比较不同的窗函数，不同的数据长度对Welch法谱估计质量的影响，并分析了造成这些影响的原因。(The paper mainly introduces the principles of Periodogram method of classical PSD estimation,analyzes the deficiency of Periodogram method in theory,and makes use of Welch to amend Perodogram method. By the use of simulation in Matlab, the impacts of different window function and different lenghth of data on estimation quality of Welch are discussed and the reasons of the impacts are analyzed.)

Visual Cryptography

信号的奇异谱香农熵和奇异谱指数熵 matlab 源程序(Signal singular spectrum Shannon entropy and singular entropy source spectral index)

说明：  Optimization of PID Parameters Using SIMULIN K and Optimization Toolbox

说明：  基于HSM（harmonic-to-subharmonic）的基音提取算法。本算法通过对HSM建模，消除了基音提取过程中基音减半或增倍的现象，大大提高了准确性能。(Based on HSM (harmonic-to-subharmonic) of the pitch extraction algorithm. HSM model by the algorithm, the extraction process to eliminate the pitch halving or pitch doubling phenomenon, greatly improving the accuracy of performance.)

这是一个2D图像互信息配准的程序，其中图像已经导入到matlab中，并形成mat文件，对于学习互信息配准有很大的帮助(2_D image registration based on mutual information )

互信息法计算延迟时间，可带入自己数据进行计算，方便快捷(Mutual information method to calculate the delay time can be calculated into your data, convenient)

matlab codes given for various applications.