content_spline.m

these are the Mtlab functions to plot the figures in the book Communication system (by Haykin)

% plot spline functions
clear B0 B1 B2 B3;
B0(1:10)=1;


B1=conv(B0,B0);
B1=B1/max(B1);

B2=conv(B1,B0);
B2=B2/max(B2)*3/4;
B3=conv(B2,B0);
B3=B3/max(B3)*2/3;
subplot(2,2,1);
plot(B0); axis([1,60,0,2]);
subplot(2,2,2); plot(B1);axis([1,60,0,2]);
subplot(2,2,3); plot(B2);axis([1,60,0,2]);

subplot(2,2,4); plot(B3);axis([1,60,0,2]);