ofdm_simulation

this is the research doc for mp3 stegnography

说明：  本程序实现多模态故障检测与故障诊断，用的方法是LPP_GMM_FJ，对象为TE,GMM是用的FJ算法，效果很好(This procedure realize multimodal, fault detection and fault diagnosis method is LPP_GMM_FJ, object for TE, GMM FJ algorithm is used, the effect is very good)

由于Matlab不同于其它编程语言,因此在使用数据库方面和其它语言有显著不同.主要介绍 Matlab中数据库的连接和使用。(Because Matlab is different from other programming languages, so in the use of databases and other languages are markedly different. Mainly Matlab database connection and use.)

通信系统的仿真,卷积码是纠错码的一种,可以用于数字电视,手机等通信领域,本例子给出了基于matlab的程序，卷积码BPSK调制。(Simulation of communication systems, convolutional code is an error-correcting code can be used for digital television, mobile phones and other communications, the examples given based on the matlab program convolution code BPSK modulation.)

说明：  有详细的粒子群优化算法源代码，可以用于控制器参数寻优(Detailed particle swarm optimization algorithm source code, can be used for controller parameters optimization)

pmsm smo contorl mdl file.

OFDM信号源，可用于MATLAB仿真，做为通信系统的源输入。(OFDM signal source can be used for MATLAB simulation of communication systems as the source of input.)

Lamb波群速度，相速度，波长随着频率的变化(Lamb wave scpoe)

用matlab编写的程序，实现图像的3*3、7*7、9*9算术均值滤波和几何均值滤波，文档中有matlab源码以及运行结果截图(Programs written with matlab, image 3* 3,7* 7,9* 9 arithmetic mean filter and geometric mean filter, documentation and operating results have matlab source screenshot)

对滚动轴承故障信号进行形态学滤波的相关MATLAB 文件(The matlab document about morphological filtering of fault signals of rolling bearings)