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example4_6
:滤波
fs=400 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=5 时间窗大小
t=0:ts:T (hf1=zeros(1,N)
hf1(f<=B1&f>=-B1)=1
y1=hf1.*fftshift(y)
figure
subplot(211)
plot(f,abs(fftshift(y))/N,f,hf1, r-- )
axis([-fs/2,fs/2,0,1.2])
title( 原信号频谱 )
xlabel( f /Hz )
subplot(212)
plot(f,abs(y1)/N)
title( 低通滤波,截止频率90Hz )
xlabel( f /Hz ))
- 2010-05-25 20:58:05下载
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设计一个比赛日程安排表,使得在尽可能短的时间内完成比赛。(The timing of track and field
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Basic narrowband system based on OFDM modulation, including filtering to reduce ACI
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iFixInduction
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6
说明: Linearity in the mathematical sense is more than a straight line graph. In the jargon, it means additive and homogeneous.
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work
求解随机余弦波的时间均值、时间相关函数程序,随机变量在(0,2pi)内服从均匀分布,可用于验证各态历经性(Cosine wave of the time for solving stochastic mean, random variable in (0,2 pi) the uniform distribution, can be used to verify the ergodic)
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