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//Interconnectiuion of LTI systems
n=-10:10;
for i=1:length(n)
if(n(i)==0)
h1(i)=2;
else
h1(i)=1;
end
end
for i=1:length(n)
if(n(i)==2)
h2(i)=1;
else
h2(i)=0;
end
end
for i=1:length(n)
if(n(i)>=1)
h3(i)=1;
else
h3(i)=0;
end
end
for i=1:length(n)
if(n(i)>= -1)
h4(i)=1;
else
h4(i)=0;
end
end
for i=1:length(n)
h5(i)=n(i);
h6(i)=1;
end
h23=h2.*h3;
h234=h4+h23;
h1234=h1.*h234;
h56=h5.*h6;
h=h56+h1234;
x=[1 -0.5];
n1=[0 1];
y=convol(x,h);
n2=-10:11;
subplot(3,1,1)
xtitle("input signal x(n)","....................n","x[n]");
plot(n1,x,'.');
subplot(3,1,2)
xtitle("system response h(n)","....................n","h[n]");
plot(n,h,'.');
subplot(3,1,3)
xtitle("output signal y(n)",".............................n","y[n]");
plot(n2,y,'.');
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