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+//ANALOG AND DIGITAL COMMUNICATION
+//BY Dr.SANJAY SHARMA
+//CHAPTER 6
+//NOISE
+clear all;
+clc;
+printf("EXAMPLE 6.8(PAGENO 297)");
+
+//given
+R_a = 50//antenna resistance
+R_eq = 30//equivalent noise resistance of receiver
+T_0 = 290//initial temperature in degree kelvin
+//calculations
+F = 1+(R_eq/R_a);//noise figure
+F_dB = 10*log10(F)//noise figure in decibels
+T_eq = T_0*(F-1)//equivalent temperature
+
+//results
+printf("\n\ni.Noise figure in decibels = %.2f dB",F_dB);
+printf("\n\nii.Equivalent temperature  = %.2f degree kelvin",T_eq)