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clc;
close();
clear();
//page no 447
//prob no. 13.3
k=1.38*10^-23; //Boltzmann's const
//Temperatures in K
Ti=150;
Te=325;
Tsys=Ti+Te;
mprintf(' Tsys=%i K \n',Tsys);
D=5;
W=15; //kHz
B=2*(1+D)*W;
mprintf(' B=%i kHz\n',B);
Nsys=k*Tsys*B*10^3; //W
mprintf(' Nsys=%.3f fW\n',Nsys*10^15);
PR=50*10^-12; //W
SNsys=PR/Nsys;
mprintf(' (S/N)sys=%i \n',SNsys);
GR=3*(1+D)*D^2
mprintf(' GR=%.0f \n',GR);
SNoutput=GR*SNsys;
mprintf(' (S/N)output=%.0f \n',SNoutput);
mprintf(' (S/N)out,dB=%.2f dB\n',10*log10(SNoutput));
mprintf(' (S/N)sys,dB=%.2f dB\n',10*log10(SNsys));
GRdb=10*log10(GR);
mprintf(' GR,dB=%.2f dB \n',GRdb);
mprintf(' (S/N)output,dB=%.2f dB\n',10*log10(SNoutput));
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