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ofdm
The file is a simulation based on simulink about ofdm system.
- 2010-05-08 13:12:48下载
- 积分:1
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fcmC
可以自适应的给出最佳的聚类数, 而且可以验证聚类的有效性,
达到最佳聚类的目的(You can give the best adaptive number of clusters, and can verify the validity of clustering, to achieve the purpose of optimal clustering)
- 2014-08-31 12:53:06下载
- 积分:1
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SeisLab
地震勘探中经常用到的MATLAB工具包,将会对你有很大的帮助!(Frequently used in seismic exploration MATLAB toolkit will be a great help for you!)
- 2013-08-02 09:59:48下载
- 积分:1
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gui-filter
滤波器,可随意调节输入信号或滤波器参数,有时域频域两种显示(Filter, adjustable input signal or filter parameters, and sometimes two display domain and frequency domain)
- 2014-12-07 16:11:30下载
- 积分:1
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matlab-danzhijie-pipei
微波中的单支节匹配 matlab GUI界面,清晰明了,使用,很好的学习资料( matlab GUI)
- 2014-12-09 20:25:12下载
- 积分:1
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assem
Assembel element matrices Ke ( and fe ) into the global stiffness matrix K ( and the global force vector f ) according to the topology matrix edof.
- 2009-05-29 22:53:25下载
- 积分:1
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topsis
本程序完成topsis多目标单目标化的功能,主要用以多目标的优良等级评定!(This procedure to complete the TOPSIS multi-objective single objective function, mainly used to assess the good grade targets!)
- 2013-03-06 22:55:35下载
- 积分:1
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MATLAB_GPS_SIMULATION
基于matlab的gps仿真,包括理论原理、仿真方法、仿真结果及其分析等(Based matlab gps Simulation, including the theoretical principles of simulation methods, simulation results analysis)
- 2013-04-09 21:43:39下载
- 积分:1
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programas_codificaciondeotro
Codificacion turbo y convolucional, Comunicacion y codificacion digital
- 2013-04-16 10:43:49下载
- 积分:1
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FIR
1、验证窗函数 N 变化时,验证其频谱主瓣副瓣比、主瓣宽度的变化。
a)矩形窗函数的 N 变化时,验证其其频谱主瓣副瓣幅度比基本不会发生变化,
而主瓣宽度将会变窄。这说明,当用矩形窗函数设计滤波器时,增大 N 不能使
得阻带衰减减小,但能够减小过渡带。
b)再选取其他的窗如 hamming/hanning 窗,验证当 N 变化时,其频谱主瓣宽
度变化、主瓣副瓣比值变化情况。
2、用窗函数法设计线性相位 FIR 低通,通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI,
阻带衰减不小于 40dB,通带衰减不大于 3dB.
a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否
满足要求,二者有什么不同。
b)使用 hamming 窗,将窗长增大 1 倍,设计 FIR。验证同样的窗函数类型
(hamming),不同窗长度时,设计出来的 FIR 的过渡带宽和阻带衰减都有什么变
化。
3、不使用 Matlab 系统函数得到上一项指标的低通,并与上一项结果比较。
4 用窗函数法设计线性相位 FIR 高通,通带截止频率 wp=0.8PI, 阻带截止频率
ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter.
For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is
The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter.
In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and
Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter
Transition bandwidth.)
- 2017-07-06 11:55:24下载
- 积分:1