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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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PSD-raise_cos
包括抽样函数， 余弦函数， 升余弦函数， 滚降升余弦函数的频谱(Including the sampling function, cosine function or cosine function, roll-off spectrum raised cosine function)
- 2011-05-21 09:37:19下载
- 积分：1
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two_joint_workspace
利用matlab的simulink进行两杆的工作空间仿真(workspace simulation using matlab)
- 2013-08-13 11:03:30下载
- 积分：1
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DTMF
dtft程序图源代码，本科生毕业设计程序( DTMF, by itself, creates a new DTMF or raises the existing
)
- 2013-03-03 13:12:16下载
- 积分：1
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Introduction-of-wavelet-analysis
关于傅里叶变换和小波分析的基础知识内容。并附带基于Matlab案例进行说明。(Basic konwledge for Fourier transform and wavelet analysis with examples written in matlab )
- 2013-12-17 09:46:01下载
- 积分：1
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photonic_1D_TEM
photonic crystal-matlab
- 2009-05-29 21:42:34下载
- 积分：1
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stage-of-OFDM(study-PDF-include)
关于语音调制的OFDM的多种平台的搭建，其中代码很详细，包括了OFDM仿真的学习文件PDF.(About to build voice modulation OFDM multiple platforms, where the code is very detailed, including OFDM simulation study documents PDF.)
- 2014-11-25 21:23:36下载
- 积分：1
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navi
该算法利用matlab实现指北方位捷联惯导解算过程(The algorithm uses matlab achieve refers northern bit SINS solver process)
- 2012-11-03 10:10:22下载
- 积分：1
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platformalignment
平台惯导初始对准程序仿真 (platform alignment)
- 2010-02-23 20:00:50下载
- 积分：1
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rules
some neural network rules Matlab code such as:perceptron, delta, widrow exist in this document
- 2011-06-05 23:41:07下载
- 积分：1
