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example4_4
例4：在sinc(t)信号中叠加噪声，分析对应频谱
fs=100 采样频率,必须大于两倍基带信号最高频率
ts=1/fs 采样时间间隔
T=2 时间窗大小
(
x=x+0.1*randn(1,N)
x=awgn(x,-10, measured )
figure
plot(t,x)
title( 时域信号图 )
xlabel( t /s )
y=fft(x,N)
figure
if mod(N,2)~=0
N=N-1
end
f=linspace(0,fs/2,N/2)
plot(f,abs(y(1:N/2))*2/N)
title( 叠加噪声的sinc(t)信号频谱 )
xlabel( f /Hz )
figure
y0=y(1:N/2)
P=y0.*conj(y0)/N
P=10*log10(P)
plot(f,P)
title( 功率谱 )
xlabel( f /Hz )
)
- 2010-05-25 20:59:03下载
- 积分：1
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two_channal_PRfb
这是一个双通道完全重构滤波器设计matlab源代码(This is a dual-channel perfect reconstruction filter design matlab source code)
- 2013-03-04 15:23:47下载
- 积分：1
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Machine_Learning
包括无监督和监督的机器学习技术
• K-means and other clustering tools
• Neural Networks
• Decision trees and ensemble learning
• Naï ve Bayes Classification
• Linear, logistic and nonlinear regression(Highlights include unsupervised and supervised machine learning techniques including:
• K-means and other clustering tools
• Neural Networks
• Decision trees and ensemble learning
• Naï ve Bayes Classification
• Linear, logistic and nonlinear regression)
- 2013-11-18 14:45:41下载
- 积分：1
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kalman_forward_backward
Kalman filter expample, kalman_forward_backward
- 2010-08-09 16:29:29下载
- 积分：1
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3d
在3d不光滑曲面上的射线跟踪算法，效果比较好，希望可以帮助到大家(3d surface is not smooth in the ray-tracing algorithm, the effect is good, hope you can help to)
- 2013-09-23 19:36:19下载
- 积分：1
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MATLAB
matlab的一些文件，很好的东西哦，希望对大家有助。(matlab some documents, good things Oh, I hope to help everyone.)
- 2008-06-05 23:25:54下载
- 积分：1
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matlab-gongjuxiang
matlab工具箱，神经网络
很全面，超星版(matlab toolbox, neural network is very comprehensive, Superstar Edition)
- 2010-05-06 21:14:41下载
- 积分：1
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Levenberg-Marquardt
上传的是Levenberg-Marquardt方法的基本原理(Upload is the basic principle of the Levenberg-Marquardt method)
- 2012-08-13 10:13:10下载
- 积分：1
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te_horn
一个 天线的MATLAB 代码，是在国外的网站下的(Antenna)
- 2009-10-16 09:34:40下载
- 积分：1
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diqizhang
说明： matlab在图像处理中的重要代码！很详细的过程(matlab important in image processing code!)
- 2010-04-18 16:11:47下载
- 积分：1
