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//Chapter 7, Example 7.14, page 344
clc
//Initialisation
ur=0.001 //unavailability budget for hypothetical circuit
d=50 //path-length in km
A=0.25 //area conditions
B=1 //area conditions
f=8 //frequency in GHz
//Calculation
pw=ur*(d*(d*d)**-1) //deep fading occurrence probability
po=6*10**-7*A*B*f*(d**3) //fading occurrence probability of desirable link
FM=-log10(pw/po)*10 //fade margin
//Results
printf("Fade margin = %.1f dB",FM)
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