-
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
-
bandfilter
带通滤波器,用于信号处理,有效可用,仿真有效(Band pass filter, used for signal processing, is available.)
- 2018-09-19 15:06:24下载
- 积分:1
-
wavelet
2代小波示意程序,此程序用提升法实现第二代小波变换
(two generation wavelet indicate procedures, the procedures used to enhance law to achieve the second generation wavelet transform)
- 2007-07-08 10:33:40下载
- 积分:1
-
ann_1.1.1_MS_Win32_bin
ann 最小距离运算库
ann 可提高运算速度(ann ann ann ann ann
ANN ann ann ann ann ann ann ann lib)
- 2010-01-10 20:48:02下载
- 积分:1
-
viewbasedata4
读雷达基数据,格式为敏视达SA,类型为反射率因子。将其读入矩阵,并进行了插值,可以以图象显示。(Reading Radar Data)
- 2010-05-17 22:29:57下载
- 积分:1
-
cooperative-spectrum-sensing
This is a program to describe cooperative spectrum sensing of Cognitive radio implemented in cognitive radio
- 2013-11-21 19:51:30下载
- 积分:1
-
111
这个压缩包中有6个函数,利用平均互信息量进行聚类分析的一组函数(CE Matlab Functions)
- 2015-02-17 16:47:48下载
- 积分:1
-
music
经典的music算法(包含多个),用于无线通信的来波方向估计。(Classical music algorithm (contains more than one) for wireless communications, estimated DOA.)
- 2008-06-24 16:15:02下载
- 积分:1
-
m_sequence
m序列产生程序.matlab程序实现。验证正确。根据m序列的原理(m sequence)
- 2011-06-20 19:12:29下载
- 积分:1
-
power_Transfo3phCoreType_iexc
power_Transfo3phCoreType_iexc.rar,功率电子领域matlab仿真文件,已经验证过,程序运行正常(power_Transfo3phCoreType_iexc.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)
- 2013-08-26 22:06:59下载
- 积分:1