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FRFTcode
分数阶傅里叶变换的matlab程序，做数字信号处理可以直接使用(Fractional Fourier transform matlab program)
- 2021-03-30 15:29:09下载
- 积分：1
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qaskawelch
使用MATLAB仿真ask信号，并画出眼图，使用窗函数对数据进行功率谱计算，并画图(Use the data window function power spectrum calculation, and drawing)
- 2013-11-20 21:30:58下载
- 积分：1
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matlab_FEM_dismesh
DistMesh giving a singular FEM matrix?(Hi
Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D:
rho_1 < rho < rho_2
where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition.
Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used:
Circle with hole
rABC=1.5
rCyl=0.5
fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl)
fd=inline(fdstring, p )
box=[-2,-2 2,2]
[p,N]=distmesh2d(fd,@huniform,0.04,box,[])
I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)
- 2010-06-05 09:17:55下载
- 积分：1
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simplecharrec(III)-update
charachter recognitiion
- 2009-11-25 06:15:46下载
- 积分：1
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usefulpro
解决无优化问题的很有效的matlab程序，包括运行结果，希望可以多交流学习(Solve optimization problems without matlab very effective procedures, including operating results, hoping to learn more exchanges)
- 2011-04-29 21:28:25下载
- 积分：1
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gearing
matlab程序，适用于求解螺旋锥齿轮啮合线分析，其中以对数螺旋齿轮分析(Matlab procedures applicable to the solving of spiral bevel gear meshing line analysis, with a few pairs of helical gear Analysis)
- 2007-05-07 21:30:43下载
- 积分：1
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wodewodewode
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 )
- 2007-06-20 23:44:47下载
- 积分：1
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pre3
very useful source code for telecommunication
- 2011-11-27 22:28:56下载
- 积分：1
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Cholesky
正定矩阵的乔利斯基（Cholesky）分解程序(Cholesky Modify)
- 2012-02-07 15:42:30下载
- 积分：1
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fisher
matlab实现的模式识别的分类器：fisher 与bayes 分类器，实现男女性别的分类.(matlab implementation of the pattern recognition classifier: fisher and bayes classifier, to achieve gender classification.)
- 2010-05-26 20:13:24下载
- 积分：1
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