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// Example no 9.9
// To determine the maximum number of users using a)omnidirectional base station antenna and no voice activity b)three-sectors at the base station and voice activity detection
// Page no. 472
clc;
clear all;
// Given data
W=1.25*10^6; // Total RF bandwidth in Hz
R=9600; // Baseband information bit rate in bps
EbNo=10; // Minimum acceptable SNR in dB
// a)Maximum number of users using omnidirectional base station antenna and no voice activity
N1=1+(W/R)/EbNo; // Maximum number of users using omnidirectional
// b)Maximum number of users using three-sectors at the base station antenna and voice activity with alpha=3/8
alpha=3/8; // Voice activity factor
Ns=1+(1/alpha)*((W/R)/EbNo); // Maximum number of users
N2=3*Ns; // Maximum number of users using three-sectors
// Displaying the result in command window
printf('\n Maximum number of users using omnidirectional base station antenna and no voice activity = %0.0f',N1);
printf('\n Maximum number of users using three-sectors at the base station antenna and voice activity (with alpha=3/8) = %0.0f',N2);
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