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funcprot(0)
//Variable Declaration
PR=0.01 //The Average power received(watts)
Tb=0.0001 //Bit period(seconds)
N0=10**-7 //Noise power(joule)
//Calculations
Eb=PR*Tb //Energy per bit received (joule)
x=sqrt(Eb/N0)
erf=integrate("exp(-t^2)","t",0,x)
erf1=erf*(2/%pi**0.5)
BER=(1-erf1)*(10**6)/2
printf("The Bit error rate is %.1f * 10^-6", BER)
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