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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 )
)
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Magic_GUI
Magic GUI components code in MATLAB
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MCSE Training Guide: Networking Essentials, Second
Edition is designed for advanced end-users, service technicians,
and network administrators with the goal of
certification as a Microsoft Certified Systems Engineer
(MCSE). The “Networking Essentials” exam (70-058)
measures your ability to implement, administer, and
troubleshoot information systems that incorporate
Windows 95 as well as any of the BackOffice family of
products. According to Microsoft, the exam covers only
the networking knowledge and skills common to both
Windows 95 and BackOffice products.
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图像RGB颜色矩提取matlab程序
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Matlab Training Book
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source code of channel capacity
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