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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);