-
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
-
matlab-ebook
4 Matlab ebook in pdf for engineering students, useful to learn matlab software
- 2015-01-31 00:59:30下载
- 积分：1
-
Matlab-kekuozhanbiancheng
何强老师的《matlab可扩展编程》的代码，相当实用可以参考(He Qiang teacher " matlab scalable programming" code, can be very useful reference)
- 2015-03-06 09:23:09下载
- 积分：1
-
fm_gui_v2
the file have a fft shift and hipass and lowpass filter and other options that works with signal .
- 2009-11-02 00:06:35下载
- 积分：1
-
Ammod
this code has an amplitude modulation with plots.
- 2009-06-04 06:14:30下载
- 积分：1
-
ganzhi_qi
说明： 利用软件工具MATLAB在模式识别中的一个应用，即实现分类器的编程(Using pattern recognition software tool MATLAB in an application, ie, the programming to achieve classification)
- 2011-03-27 16:36:43下载
- 积分：1
-
7401-PB04-R
BCM7401 Datasheet for Satellite embedded system
- 2014-08-20 19:19:06下载
- 积分：1
-
57765079motorvectorcontrol
按转子磁链定向的矢量控制系统matlab仿真；(Press the rotor flux oriented vector control system matlab simulation )
- 2013-11-17 20:13:38下载
- 积分：1
-
Mutiple_Frequency_PWM
matlab多电平拓扑三相电路仿真原理图，很实用(matlab multi-level topology of three-phase circuit simulation schematic, very practical)
- 2011-07-07 20:08:57下载
- 积分：1
-
Classifier_NN_f
最近邻分类器，matlab环境下，可直接调用(Nearest neighbor classifier, matlab environment, can be called directly)
- 2010-06-28 13:43:33下载
- 积分：1
