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// Example 9.4
// Calculation of the maximum reach up to which the carrier orthogonality is preserved.
// Page no 408
clc;
clear;
close;
//Given data
b=22*10^-27; // Power launched in port 1
T=1.28*10^-9; // Guard interval
N=128; // Subcarriers
f=78.125*10^6; // Frequency spacing between subcarriers
// Bit rate of communication system
I=T/(b*2*%pi*N*f);
I=I*10^-3;
//Displaying results in the command window
printf("\n The maximum reach up to which the carrier orthogonality is preserved = %0.0f km ",I);
// The answers vary due to round off error
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