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+//Page Number: 8.8
+//Example 8.4
+clc;
+
+//Given,
+R=50;
+osnr=0;
+SNRo=(10^(osnr/10));
+disp(SNRo,'Output SNR');
+
+//As Pni=KTB
+K=1.38D-23;
+T=290;
+B=5D+5;
+Pni=K*T*B;
+disp('W',Pni,'Input noise power');
+
+//Psi=V^2/R
+//Given V=5*10^-6V
+V=0.5D-6;
+Psi=(V^2)/R;
+disp('W',Psi,'Signal Power Input');
+
+isnr=(Psi/Pni);
+disp(isnr,'Input SNR');
+
+F=(isnr/SNRo);
+disp(F,'Noise Factor');
+
+NF=10*log10(F);
+disp('dB',NF,'Noise figure');