simu.m

This program shows the distributions of the co-channel interference in forward and reverse link in t

%This function is to simulate the signal-interference-ratio in a cellular
%systems
clear all;
close all;

N=1;
n=4;

K=6;
R=500;

z = R*RandPOS(100000);
z1= R*sqrt(3)*exp(j*pi/6);
z2= R*sqrt(3)*exp(j*(pi/6+pi/3));
z3= R*sqrt(3)*exp(j*(pi/6+2*pi/3));
z4= R*sqrt(3)*exp(j*(pi/6+3*pi/3));
z5= R*sqrt(3)*exp(j*(pi/6+4*pi/3));
z6= R*sqrt(3)*exp(j*(pi/6+5*pi/3));

sir = abs(z).^(-n)./( abs(z-z1).^(-n) + abs(z-z2).^(-n) + abs(z-z3).^(-n) + abs(z-z4).^-n +abs(z-z5).^(-n) +abs(z-z6).^(-n) );
sir_dB = 10*log10(sir);
hist(sir_dB,[-10:100]);

N=3;
n=4;

z = RandPOS(100000);
z1= 3*exp(j*pi/3);
z2= 3*exp(j*(pi/3+pi/3));
z3= 3*exp(j*(pi/3+2*pi/3));
z4= 3*exp(j*(pi/3+3*pi/3));
z5= 3*exp(j*(pi/3+4*pi/3));
z6= 3*exp(j*(pi/3+5*pi/3));

sir = abs(z).^(-n)./( abs(z-z1).^(-n) + abs(z-z2).^(-n) + abs(z-z3).^(-n) + abs(z-z4).^-n +abs(z-z5).^(-n) +abs(z-z6).^(-n) );
sir_dB = 10*log10(sir);
mm = find(sir_dB>25);
nn = find(sir_dB<25);

figure(2)
hist(sir_dB(nn),[-10:50]);
%figure(3)
%hist(sir_dB(mm),[25:2:100]);