propagation.m

Propogarions methos for Wimax

clc
clear all
close all
d = 0.150:0.1:50; 
% d0 = 100;
f = 3500;
% hb = 80;
hr = 3;
% alp1 = 5.2;
% alp2 = 6.6;
% lemda = (3*10^8) / (3.5*10^9) ;
% a1 = 4.6;
% b1 = 0.0075;
% c1 = 12.6;
% a2 = 3.6;
% b2 = 0.005;
% c2 = 20;
% gemma1 = a1 - b1*hb + (c1/hb); % for rural
% gemma2 = a2 - b2*hb + (c2/hb); % for urban 
% A = 20 * log10 (4*pi*d0/lemda);
% xh1 = -10.8 * log10 (hr/2000);
% xf = 6 * log10 (f/2000);
% s1 = 0.65*(log10 (f))^2 - 1.3*log10(f) + alp1;
% s2 = 0.65*(log10 (f))^2 - 1.3*log10(f) + alp2;
% Pl = A + 10*gemma2*log10(d/d0)+ xf + xh1 + s1;
% Pl1 = A + 10*gemma1*log10(d/d0)+ xf + xh1 + s2;
% plot (d , Pl)
% title('SUI Propagation Models')
% xlabel('Distance Between Tx and Rx (Km)')
% ylabel('Path Loss (dB)')
% hold on
% grid on
% plot (d , Pl1,'g')
% legend('Urban Areas','Rural Areas','location','Best')
% % hata Model   %
% cm = 3;
% f = 1900;
hb = 50;
% a = 3.2 * (log10 (11.75*hr))^2 - 4.97;
% plu = 46.3 + 33.9 * log10 (f) - 13.82 * log10 (hb) - a*hr + (44.9 - 6.55*log10 (hb)*log10(d))+ cm;
% %plu1 = 10 ^ (plu/10);
% %plu2 = 10*log10(plu1/10^3);
% hold on
% plot (d , plu, '*')
% Ericsson Model   %
a0 = 36.2;
a1 = 30.2;
a2 = -12;
a3 = 0.1;
gf = 44.49 * log10 (f) - 4.78 * (log10(f))^2;
PL = 10 + a1*log10 (d) + a2 * log10 (hb) + a3 * log10 (hb) * log10(d) - 3.2 * (log10(11.75*hr))^2 +gf;
hold on 
grid on
plot (d, PL)
title('Ericsson Propagation Models')
xlabel('Distance Between Tx and Rx (Km)')
ylabel('Path Loss (dB)')
hold on
grid on