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//fiber optic communications by joseph c. palais
//example 11.8
//given
//OS=Windows XP sp3
//Scilab version 5.4.1
clc
clear all
//given
TA=300//Ambient temperature in Kelvin
T=454//noise temperature in Kelvin
//to find
F=1+(T/TA)//Noise figure
Fdb=10*log10(F)//Noise figure in dB
mprintf("Noise figure =%f db",Fdb)
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