?? fig5_10.m .txt
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Figure 5.10
% Zhi Tian 7/7/99
% Updated by K. Bell 10/12/00, 7/23/01, 10/23/01
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
clear all
close all
N=10;
amf=[-(N-1)/2:(N-1)/2]';
BWnn=4/N;
du=0.001:0.01:2;
nn=kron([1:N]',ones(1,N))-kron([1:N],ones(N,1));
for i=1:length(du)
us=du(i);
Bc=sin(N*pi*us/2)/N/sin(pi*us/2);
Lss(:,i)=[1+abs(Bc);1-abs(Bc)];
end
Lss=10*log10(Lss);
figure
semilogx(du/BWnn,Lss)
axis([0.01,3,-35,5])
xlabel('{\it\Deltau}/{\itBW}_{\itNN}','Fontsize',14)
ylabel('Normalized eigenvalues (dB)','Fontsize',14)
grid
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