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// Example no 4.10
// To find the power at receiver
// Page no. 152
clc;
clear all;
// Given data
d=50*10^3; // Distance between transmitter and receiver in m
hte=100; // Effective heigth of transmitter in m
hre=10; // Effective heigth of receiver in m
EIRP=1*10^3; // Radiated power in Watt
f=900*10^6; // Operating frequency in Hz
c=3*10^8; // Speed of ligth in m/s
lambda=c/f; // operating wavelength in m
EIRP=20*log10(EIRP); // Radiated power in dB
Gr=0; // Receiving gain in dB
Lf=-10*log10(lambda^2/(4*%pi*d)^2); // Free space path loss in dB
Amu=43; // Attenuation relative to free space in dB from Okumuras curve
Garea=9; // Gain due to type of environment in dB from Okumuras curve
Ghte=20*log10(hte/200); // Base station antenna heigth gain factor for 1000m > hte > 30m
Ghre=20*log10(hre/3); // Mobile antenna heigth gain factor for 10m > hre > 3m
L50=Lf+Amu-Ghte-Ghre-Garea; // Total mean path loss
// The median reeived power
Pr=EIRP-L50+Gr;
//Displaying the result in command window
printf('\n The power at receiver = %0.2f dBm',Pr);
//Answer is varrying due to round-off error
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