%  Exponential power distribution Figure 6.7
po1=2;
po2=4;
p=[0:.01:6];

p1=exp(-p/po1)/po1;
p2=exp(-p/po2)/po2;
figure;
plot(p,p1,'k',p,p2,'k:')
axis([0 6 0 .5])
xlabel('Power (\muW)')
ylabel('p(p)')
legend('p_o_1=2\muW','p_o_2=4\muW')