SVM-for-cassification

Matlab直流潮流程序，Matlab直流潮流程序(Matlab直流潮流程序Matlab直流潮流程序)

几个关于利用傅里叶变换进行谐波分析的代码。有详细的变换过程，比较适合想了解原理的初学者。(Several on the use of Fourier transform for harmonic analysis of the code. The transformation process in detail, more suitable for beginners would like to know the principle.)

This file is the programs of (chapter 1) of book (Modeling the Wireless Propagation Channel a Simulation Approach with MATLAB) which is related to introduction to wireless propagation. It helps you to simulate wireless channel and wireless statistical models with PDF and CDF.

格兰杰因果检验：检测两个样本之间的因果关系，常用到预测中(Granger causality test: detecting causal relationship between the two samples, used to forecast)

语音增强之谱相减算法，加窗分帧频域处理，计算信噪比及画出波形对比。(Spectral subtraction speech enhancement algorithm, window-frame frequency domain processing to calculate the signal-to-noise ratio and draw the waveform comparison.)

说明：  物元分析法由我国数学家蔡文在 20 世纪 80 年代提出． 应用物元法建立多指标评价模型，可以针对复杂问题建立形象化模型，定量化得出评价结果，从而较完整、准确地反映事物的综合水平。利用matlab编程，进行如下步骤计算：1、待判物元的确定；2、经典域、节域的确定；3、关联函数；4、综合关联度(Matter-element analysis method was put forward by Chinese mathematician Cai Wen in 1980's. Applying matter-element method to establish multi-index evaluation model can establish visualization model for complex problems and quantify the evaluation results, so as to reflect the comprehensive level of things more completely and accurately. Using MATLAB programming, the following steps are calculated: 1. determination of the subject element to be judged; 2. determination of classical domain and node domain; 3. correlation function; 4. comprehensive correlation degree)

通过matlab建立码分多址通信系统的仿真平台，并仿真了扩频通信的性能(Matlab code division multiple access communication system through the establishment of the simulation platform, and simulated the performance of spread spectrum communication)

x0 = ones(2,2) Make a starting guess at the solution options = optimset( Display , off ) Turn off Display [x,Fval,exitflag] = fsolve(@myfun,x0,options) The solution is x = -0.1291 0.8602 1.2903 1.1612 Fval = 1.0e-009 * -0.1619 0.0776 0.1161 -0.0469 exitflag = 1 and the residual is close to zero. sum(sum(Fval.*Fval)) ans = 4.7915e-020

该书介绍了Matlab的使用，其主要内容包括：MATLAB 入门及基本操作，数组、矩阵的使用及数据可视化方法，脚步文件及函数的编写，以及仿真、图形用户界面入门等。(The book describes the use of Matlab, and its main contents include: MATLAB Introduction and basic operation, array, matrix use and data visualization methods, the pace of preparation of documents and functions, as well as simulation, graphical user interface, such as entry.)

Three phase induction motor in dq frame simulation