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//Caption:Progam to determine the probability of maximum interference of a 64 channel CDMA system
//Example 9.1
//Page 447
disp('The probability of 63 destructive interferers is merely the probability of occurence of 63 equally likely binary events,')
Pmax=(0.5)^63//maximum probability
disp('The value of a desired receive signal is the autocorrelation of a codeword with itself and can therefore be represented as a value of 64. ')
disp('The mean and varience of a sum of 63 such variable are 0 and 63, respectively. The signal-to-interference ratio is now determined as,')
a=[(64^2)/63]
SIR=10*log10(a)
//Result
//Signal to interference ratio = 18.1 dB
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