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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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2Dlineintegral
PIECEWISE_EVAL: evaluates a piecewise function of x
usage: y = PIECEWISE_EVAL(x,breakpoints,funs)
arguments (input)
x - vector or array of points to evaluate though the function
breakpoints - list of n breakpoints, -inf and +inf are implicitly(PIECEWISE_EVAL : evaluates a piecewise function of x usage : PIECEWISE_EVAL y = (x, breakpoints, funs) arguments (input) x-vector or array of po ints to evaluate the function though breakpoin ts-list of n breakpoints.- inf and inf are implicitly)
- 2006-12-14 21:41:39下载
- 积分：1
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zhengjiaotiaozhi
通信原理课程做的大作业，关于正交调制的。(communication theory courses do the work, on the orthogonal modulation.)
- 2007-05-03 16:32:07下载
- 积分：1
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Fuzzy-Control-CAJ-format
模糊控制的基础知识，对学习模糊控制的同志很有帮助，是CAJ格式(The basics of fuzzy control, fuzzy control learning comrades helpful, is CAJ format)
- 2011-10-05 20:26:10下载
- 积分：1
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Memory_2005
介绍了关于memory的相关函数，对于大多数程序员有很大帮助，希望大家多多使用(the information about memory)
- 2013-10-11 11:26:50下载
- 积分：1
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045090071
基于MATLAB的遗传算法求解函数的最小值(MATLAB-based genetic algorithm for solving the minimum value of the function)
- 2009-11-30 20:13:18下载
- 积分：1
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COMandMATLAB
基于COM的MATLAB与CNET混合编程的实现与应用(COM-based MATLAB and CNET Implementation and Application of Hybrid Programming)
- 2010-05-19 15:10:54下载
- 积分：1
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fuzzy2
FUZZY LOGIC gaussian function /triangular function
- 2019-05-01 22:27:39下载
- 积分：1
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upload
calculate of zernike momemt of figure.
calculate of complex moment
it use for extraction feature.
edge detection
find treshold
- 2010-07-06 21:22:04下载
- 积分：1
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matlabga
说明： 能够用来求解部分关利用遗传算法的优化模型。。(Relations can be used to solve some of the optimization model using genetic algorithms. .)
- 2011-02-21 13:21:04下载
- 积分：1
