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+//ANALOG AND DIGITAL COMMUNICATION
+//BY Dr.SANJAY SHARMA
+//CHAPTER 6
+//NOISE
+clear all;
+clc;
+printf("EXAMPLE 6.9(PAGENO 302)");
+
+//given
+R_eq = 2518//equivalent resistance in ohms
+R_t = 600//input impedence in ohms
+R_a= 50//output impedencre in ohms
+
+//calculations
+R_eq1 = R_eq - R_t;
+F = 1 + (R_eq1/R_a) //noise figure
+F_dB = 10*log10(F)//noise figure in dB
+
+//results
+printf("\n\nNoise figure in dB = %.2f dB",F_dB);
+printf("\n\nNote:Calculation mistake is their in text book in finding noise figure in dB")