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//Chapter 6, Example 6.18, page 274
clc
//Initialisation
f=420 //frequency in Hz
h1=40 //height in m
h2=5 //height in m
d=15 //distance in km
//Calculation
A=69.55+26.16*log10(f)-13.82*log10(h1) //Hata parameters
B=44.9-6.55*log10(h1)
C=2*(log10(f*28**-1))**2+5.4
D=4.78*(log10(420))**2-18.33*log10(f)+40.94
E1=3.2*(log10(11.75*h2))**2-4.97
E2=(((1.1*log10(f))-0.7)*h2)-((1.56*log10(f))-0.8)
L3=A+B*log10(d)-D //in open area;
L2=A+B*log10(d)-C //in suburban area;
L1=A+B*log10(d)-E1 //in large cities;
L11=A+B*log10(d)-E2 //in small cities;
//Results
printf("In large cities L1 = %.2f dB",L1)
printf("\nIn small cities L1 = %.2f dB",L11)
printf("\nIn suburban area L2 = %.2f dB",L2)
printf("\nIn open area L2 = %.2f dB",L3)
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