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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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MATLAB
本压缩包包含一个ppt文件,主要介绍关于MATLAB的用法及入门介绍(This archive contains a ppt file, describes the usage and on introduction to MATLAB)
- 2011-08-27 20:21:17下载
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arithmetic-code
MATLAB实现算术编码,一种压缩编码,信息论与编码理论(MATLAB arithmetic coding to achieve)
- 2011-05-06 19:31:31下载
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qpsk
说明: matlab中用simulink模块实现qpsk调制,包括模块及其主函数
(matlab with simulink module QPSK modulation, including the module and its main function)
- 2008-09-10 16:01:22下载
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microwave
说明: 微波系统的模型,使用matlab gui 界面实现(Microwave system model, using matlab gui interface implementation)
- 2011-04-18 20:23:01下载
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s_g5
SG5点滤波,主要用于高光谱数据处理的滤波(SG5-point filter, the main data processing for high spectral filtering)
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我编写的monte carlo随机数发生器检验程序
说明: 该程序用来检验monte carlo随机数的分布是否满足随机性要求。包括独立性检验、均匀性检验和参数检验。(procedures used to test the Monte Carlo random number distribution to satisfy the requirements randomness. Including the independence test, uniform test parameters and test.)
- 2005-09-24 13:30:04下载
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repetition_test2
正弦信号 重复控制器 简单的matlab重现(Repeat simple sinusoidal signal controller matlab reproduce)
- 2014-09-09 14:30:23下载
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p3_4
现代信号处理中RLS算法的程序,非常实用,可清晰的看出该算法与其他算法的差异.(Modern Signal Processing RLS algorithm procedures, very practical, you can clearly see the difference between this algorithm and other algorithms.)
- 2013-11-25 20:09:57下载
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cpf_costas
COATAS 信号的三次相位函数的matlab程序,写小论文的时候自己编的(cubic phase function of COATAS)
- 2021-04-23 21:28:47下载
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