www.pudn.com > fftfiltler.rar > exa011002_rand.m, change:2003-01-17,size:540b


%----------------------------------------------------------------- 
% exa011002_rand  for example 1.10.2 
% to generate the white noise signal u(n)  with uniform distribution 
%                                               and power p; 
% 产生均匀分布的白噪信号,使均值为0,功率为p 
%----------------------------------------------------------------- 
clear; 
 
p=0.01; 
N=50000; 
u=rand(1,N); 
u=u-mean(u); 
a=sqrt(12*p);  
u1=u*a; 
power_u1=dot(u1,u1)/N   
subplot(211) 
plot(u1(1:200));grid on; 
ylabel('u(n)')      
xlabel('n')