fse55456

说明：  Dsp中的Matlab ， AFD_BUTT.M AFD_CHB1.M AFD_CHB2.M(Dsp of Matlab, AFD_BUTT.M AFD_CHB1.M AFD_CHB2.M)

对于移动通信系统主要有两类衰落：大规模衰落和小规模衰落。大规模衰落表示由于大范围内移动而引起的平均信号能量的减少或路径损耗。而小规模衰落则表现为两种机制：信号的时延扩展和信道的时变特性。对于无线应用，信道的时变特性是由于发射机和接收机相对移动而造成传输路径的变化。这些传播条件的变化速率影响衰落率。如果存在大量反射路径而不存在视行信号分量，此时的小规模衰落称为瑞利衰落(Rayleigh fading)，接收信号的包络由瑞利概率分布函数统计描述。这种衰落也就是这次实验我准备研究的(system for mobile communications fading there are two main categories : large-scale and small-scale fading fading. In view of large-scale decline of large scale movement of the average energy of the signal path to reduce or loss. And the decline of small-scale, it was manifested as two mechanisms : signal delay expansion and channel time-varying characteristics. For wireless applications, channel time-varying characteristics as transmitter and receiver relative movement caused transmission path changes. These conditions spread of the rate changes affect the rate of decline. If there is a large number of pathways exist without depending on the signaling component, At that time, the decline of small-scale known as Rayleigh fading (Rayleigh fading). The received signal envelope from Rayleigh )

应用matlab 实现对机械钻速方程的影响参数分析，石油工程，钻井。(Application of matlab to achieve ROP Equation of parametric analysis, petroleum engineering, drilling.)

来源于国外论文，可以生成pv曲线，亲测有用(Papers abroad, you can generate pv curve, pro-test useful)

处理一段语音的卡尔曼滤波，配合以LPC模型求转移矩阵参数(Processing a voice of Kalman filtering, in line with the LPC model parameters seeking transfer matrix)

差分编码的仿真程序，包含三个文件，给出了仿真性能！(Simulation of differential encoding process consists of three documents, the simulation performance!)

1D求解麦克斯韦方程组，等离子体密度，电子密度，matlab程序，+作图(1D solving Maxwell' s equations, the plasma density, electron density, matlab program,+ mapping)

DCT变换1、 提取彩色图像，将图像大小限制为512*512*3； 2、 提取彩色图像三个颜色分量的矩阵，每个矩阵单独处理； 3、 将矩阵分为8*8的块，做DCT变换； 4、 提取每个块的一部分DCT系数做IDCT变换，显示基本图像； 5、 再提取每个块的一部分DCT系数做DCT反变换，得到增强层1，与前一次得到的数据叠加，得到质量更好的图像。 (DCT transform)

特征选择工具箱，用于数据特征提取，数据降维包括mRMR等(feature selection toolbox,MItoolbox)

model of induction motor(parameters)