1 files changed, 23 insertions, 0 deletions
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
+ 
+\ No newline at end of file