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bitirmekod
SCFDMA Channel equalization
- 2011-04-22 02:29:28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
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Vision_Tarea4
Aplicacion de filtros en tiempo real con una camara web
- 2012-05-10 08:40:03下载
- 积分:1
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gold
生成生数为7,9,10,11的平衡gold码,(Generates raw Numbers for the balance of 7,9,10,11 gold, gold is not so good m sequence code autocorrelation properties, but the same length of two kinds of sequence is more than up to the amount of gold code
)
- 2013-10-10 00:04:36下载
- 积分:1
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emd
这是一个EMD分解程序,matlab运行的环境,只要导入数据,肯定可以运行(This is an EMD decomposition process, as long as the import data, they can definitely run)
- 2013-04-16 21:32:46下载
- 积分:1
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xunhuan
将toeplitz矩阵作为压缩感知测量矩阵,并对其进行性能评估。(Toeplitz matrix as the measurement of compressed sensing matrix, and its performance evaluation.)
- 2010-12-27 11:19:59下载
- 积分:1
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SmartAntennaCodeListings2
智能天线 自适应非盲算法lms,用MATLAB便携而成(Non-blind algorithm for smart antenna adaptive lms, made portable with MATLAB)
- 2010-05-12 01:10:04下载
- 积分:1
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MATLAB
matlab 7.0基础教程 清华大学出版社 孙祥 徐流美 吴清编著(stream America, Matlab 7.0 Essentials Tsinghua University Press Sun Xiang Xu Wu Ching-ed)
- 2012-05-24 15:56:04下载
- 积分:1
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enhgrayscaleimage
this code to enhanc grayscale images
- 2010-09-29 14:44:25下载
- 积分:1
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Fabric-Defect-detection-by-Bitplane-Slicing-metho
It describes the bitplane slicing method for detection of defect in a fabric. The defect is mostly detected in first two planes.
- 2013-04-09 15:41:55下载
- 积分:1