ApEn

说明：  基于MATLAB软件下的小波变换代码，实现小波变换对图片的压缩处理(MATLAB software based on wavelet transform under the code, the realization of wavelet transform for image compression)

模拟2个独立窄带信号分别以20°，60°的方向入射到均匀线阵上，信号间互不相关，与噪声相互独立，噪声为理想高斯白噪声，阵元数为10，快拍数为200，信噪比为20dB，阵元间距分别为 tambada/6 tambada/2、tambada。(Simulate two independent narrowband signals in the direction of 20 °, 60 ° of the incident on the ULA, among signal unrelated, independent noise, the noise is ideal Gaussian white noise, the array element number 10, the number of snapshots for 200, SNR is 20dB, respectively array element spacing  tambada/6 tambada/2, tambada.)

SVM简单应用，最基础的SVM用法，可以入门学习。matlab m文件(SVM simple application, SVM usage is most basic, entry learning)

1)football.m简单地以阵列形式显示一副图； 2）pre.m是心音信号过滤归一化预处理的过程； 3）wavlet.m是用db6小波进行信号的分解和重构，且求包络能量函数； 4）path.m是利用KKT条件的路径跟踪法，用于求解二次规划问题； 5）LRmmse是MIMO通信中常用检测方法，结合了最小均方误差准则和格基规约的知识。(1) football.m simply displays a graph in an array 2) pre.m is the process of normalized preprocessing of heart sound signal filtering 3) wavlet.m is a db6 wavelet for signal decomposition and reconstruction, and to find the envelope energy function 4) path.m is the path tracking method using KKT condition, which is used to solve the quadratic programming problem. 5) LRmmse is a commonly used detection method in MIMO communication, combining the knowledge of minimum mean square error criterion and lattice protocol.)

Matlab script simulates the propagation of light in multilayered medium

Different Modulation schemes are here! like ask, fsk, psk etc!

实现了人工蜂群算法（ABC），并使用算法对几个经典的测试函数进行计算，获得了理想的结果(Artificial bee colony algorithm (ABC), and using the algorithm on several classic test function is calculated to obtain the desired results)

差分法求解一维非稳态偏微分方程，两种代码，给定初值和边界值就可求(One dimensional unsteady state solution by difference method)

在matlab中用雷克子波模拟地震记录，并进行滤波(Ricker wavelet in matlab using analog seismic records, and filtering)

说明：  计算矩阵各点之间的距离，并选取合适的点，适用于大型矩阵的计算(Calculate the distance between the points of the matrix)