MIMO_OFDM_Simulator

Pattern recognition tool in matlab.

Matlab工程应用基础，这是姜歌东老师讲课的ppt(Matlab engineering applications based on this is Jiang Gedong teacher lectures ppt)

说明：  用于信号的分解、降噪和重构，实现故障诊断(Used for signal decomposition, noise reduction and reconstruction to realize fault diagnosis)

The source code is a simulation of VERTICAL-BELL LABORATORIES LAYERED SPACE TIME (V-BLAST) with QAM (Quadrature Amplitude Modulation)

线性调频信号短时傅里叶变换 线性调频信号短时傅里叶变换 (chirp signal stft chirp signal stft chirp signal stft)

通信原理中维比特算法编码，主要用于卷积码的译码(Viterbi algorithm)

一个简单的遗传算法算例，可以帮助初学者理解一下遗传算法(A simple genetic algorithm example, can help beginners to understand the genetic algorithm)

在土工三轴试验中应用该方法使得试样的变形测量更加简便。通过使用高精度标定板，对该数字图像测量方 法进行了精度分析，结果表明亚像素角点检测方法的轴向和径向测量的标准差都达到了0．02个像素，相对测量精度达到10‘4 数量级。(Triaxial tests in application of this method makes it easier specimen deformation measurements. By using high-precision calibration board, the digital image analysis to measure the accuracy of the method, the results of the standard deviation to measure the axial and radial table Minya pixel corner detection methods have reached 0.02 pixels, relative measurement accuracy of 10 ' 4 magnitude.)

利用基于排序的邻域粗糙集算法对具有高维属性的元数据进行属性约简，删减多余的无关属性，避免模型的过拟合，提高模型预测精度和模型运算速度(The algorithm based on the ordered neighborhood rough set is used to reduce the attributes of the high dimension attributes, to eliminate the redundant irrelevant attributes, to avoid the over fitting of the model, and to improve the accuracy of the model prediction and the operation speed of the model)

对非平稳信号进行分段、截取，再对处理过后的短时信号做短时傅里叶变换，分析其频谱特性，并找到各个时间节点的频率特性，以便分析不同事件段内的声音特征。(The nonstationary signals are segmented, and then the interception, the short-time signal after processing the short-time Fourier transform, the analysis of the spectrum characteristics and frequency characteristics and find the different time node, in order to analyze the acoustic characteristics of different event period.)