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+//Example 8.18 // Optimum receiver bandwidth and peak to peak signal power to noise ratio
+clc;
+clear;
+close;
+//given data :
+Tr=12*10^-9;// in sec
+f0=20*10^6;// in Hz
+fD=5*10^6;// in Hz
+Mr=80;// multiplication factor
+Pp=.75*10^-7;
+B=5*10^6;// in Hz
+i2N=10^-17;// in A^2
+fr=(1/Tr)*10^-6;
+disp(fr," Optimum receiver bandwidth,fr(MHz) = ")
+T0=1/f0;
+SbyN=10*log10((3*(T0*fD*Mr*Pp)^2)/((2*%pi*Tr*B)^2*i2N));
+disp(SbyN,"signal power to noise ratio,(dB) = ")