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+
+//Variable Declaration
+
+BIF=36   //Bandwidth of channel over which carriers are spread(MHz)
+R=0.4  //Rolloff factor for filtering
+Rb=64   //Information bit rate(kb/s)
+BER=10**-5  //Bit error rate required
+EbN0R=9.6 //Eb/N0 ratio for BER given from Fig.10.18
+
+//Calculation
+
+Rch=BIF*10**6/(1+R) //Rate of unspreaded signal(chips/s)
+Gp=Rch/(Rb*10**3)     //Processing gain
+Gp1=round(10*log10(Gp))  //Processing gain(dB)
+EbN0R1=10**(EbN0R/(10))  //Converting Eb/N0 into ratio
+K=1+(1.4*Gp/EbN0R1)  //Number of channels
+K=floor(K)
+
+//Result
+printf("The Processing Gain is %.f dB",Gp1)
+printf("An estimate of maximum number of channels that can access the system is %.f",K)