%Assignment No.5
%牟丹 2018200526
clear all;
clc;
fc=1.5e9;d0=100;
distance=(1:2:31).^2;
Gt=[1 1 0.5];Gr=[1 0.5 0.5];Exp=[2 3 6];
for k=1:3
y_logdist(k,:)=PL_logdist(fc,distance,d0,Exp(k));
y_lognorm(k,:)=y_logdist(k,:)+10*log10(normrnd(0,1));
end
subplot(1,2,1);
semilogx(distance,y_logdist(1,:),'k-o',distance,y_logdist(2,:),'b-^',distance,y_logdist(3,:),'r-s');
grid on;
axis([1 1000 40 110]);
title('Log-distance PL Model,fc=1.5Ghz');
xlabel('Distance[m]');ylabel('Path Loss[dB]');
legend('n=2','n=3','n=6',2); %2—放置在图形的左上角
subplot(1,2,2);
semilogx(distance,y_lognorm(1,:),'k-o',distance,y_lognorm(2,:),'b-^',distance,y_lognorm(3,:),'r-s');
grid on;axis([1 1000 40 110]);
title('Log-normal Shadowing PL Model,fc=1.5Ghz');
xlabel('Distance[m]');ylabel('Path Loss[dB]');legend('n=2','n=3','n=6',2);
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