SOM

this file contain some useful common communication matlab m tool. like QAM PSK and simulation of receiving noisy signal

说明：  动态系统是我们生活中的常见系统。此程序源码就是源于生活的一项仿真程序。的确不错的。(Dynamic system is a common system of our lives. This source code is a simulation program from life. Really good.)

这个程序，可以显示多通道的脑电信号，并且能够显示通道的名称(this program can show multichannel EEG, and show the name of the channels.)

基于小波变换的语音信号系数提取，简单易懂(The coefficients of speech signal based on wavelet transform are extracted, It is easy to understand.)

共振解调的过程如下：首先对采集到的信号进行傅里叶变换，然后利用传感器自身的谐振频率进行分析，对滤波后的信号进行包络，包络以后去除了高频部分，得到包络信号，再对改进的包络信号进一步进行低通滤波，最后对最终得到的信号进行傅立叶变换求其频谱图。共振解调的原理及其过程可以用图2 来进行表述。(The process of resonance demodulation is as follows: First, Fourier transform is performed on the collected signal, and then the resonance frequency of the sensor is used for analysis. The filtered signal is enveloped, and the high frequency part is removed after enveloping to obtain an envelope. The signal is further subjected to low-pass filtering on the improved envelope signal. Finally, the spectrum of the resulting signal is Fourier-transformed. The principle of resonant demodulation and its process can be expressed in Figure 2.)

CHANNEL INVERSION AND REGULAR CHANNEL INVERSION PRECODING IN Mu- mimo

输入一副图像，检测图像的RGB，并输出其值的矩阵，将符合公式R>Rt，R>G>B,S>=(255-R)*S/R,等的图像点标记出来，并输出图像(A pair of input images, the image detecting RGB, and outputs the value of the matrix, would be consistent with the formula R> Rt, R> G> B, S> = (255-R)* S/R, and other image point marked, and output image)

OFDM盲识别仿真的接收端，对OFDM信号进行符号持续时间，循环长度和子载波数量的估计(OFDM blind identification, simulation of the receiving end of OFDM signal symbol duration, cycle length and the subcarrier number of estimates)

时钟仿真程序，可实现多种显示方式 包括12/24小时制、是否显示秒数(clock simulation program can achieve a variety of formats, including 12/24 hours System, which is shown in seconds)

四种聚类算法源代码及示例代码,本程序的最终目的是形成一套标准的用于聚类、可扩展的工具。包括的内容有1. 聚类算法：Kmeans和Kmedoid算法、FCMclust, GKclust, GGclust算法 2. 评估分类原型：程序可以在二维图像上绘制出聚类的结果 3. 验证：程序给每一个算法提供验证机制，每个聚类算法会统计(Partition Coefficient (PC), classification Entropy (CE), Partition Index (SC), Separation Index (S), Xie and Beni s Index (XB), Dunn s Index (DI) and Alternative Dunn Index (DII)几种衡量指标。-Four kinds of clustering algorithms source code and sample code, the ultimate goal of this program is to form a set of standards for clustering, scalable tools. Including the contents of a. Clustering algorithm: Kmeans and Kmedoid algorithms, FCMclust, GKclust, GGclust algorithm 2. Assessment classified prototypes: programs can be plotted in two-dimensional image, the results of clustering 3. Verify: Program to provide an algorithm to each authentication mechanism, each clustering algorithm will calculate Partition Coefficient (PC), classification Entropy (CE), Partition Index (SC), Separation Index (S), Xie and Beni s Index (XB), Dunn s Index (DI) and Alternative Dunn Index (DII) of several metrics.)