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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /116/CH9/EX9.1 | |
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initial commit / add all books
Diffstat (limited to '116/CH9/EX9.1')
| -rwxr-xr-x | 116/CH9/EX9.1/exa9_1.sce | 23 |
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diff --git a/116/CH9/EX9.1/exa9_1.sce b/116/CH9/EX9.1/exa9_1.sce new file mode 100755 index 000000000..b53df56f5 --- /dev/null +++ b/116/CH9/EX9.1/exa9_1.sce @@ -0,0 +1,23 @@ +
+//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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