From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 3446/CH5/EX5.4/Ex5_4.sce | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 3446/CH5/EX5.4/Ex5_4.sce

(limited to '3446/CH5/EX5.4/Ex5_4.sce')

diff --git a/3446/CH5/EX5.4/Ex5_4.sce b/3446/CH5/EX5.4/Ex5_4.sce
new file mode 100644
index 000000000..93e22d03f
--- /dev/null
+++ b/3446/CH5/EX5.4/Ex5_4.sce
@@ -0,0 +1,26 @@
+// Exa 5.4
+// To find the number of calls per hour per cell site.
+
+clc;
+clear all;
+
+spectrum=12.5*10^6; //in Hz
+CHBW=200*10^3;//in Hz
+N=4;//reuse factor
+Blocking=0.02; // 2%
+callHT=120;//average call holding time in sec
+PPL=4;//propogation path loss coefficient
+CntrlCH=3; //No of control channels
+Ts=8; // No of voice channels per RF channel
+
+//solution
+No_ofVCH=((spectrum*Ts)/(CHBW*N))-CntrlCH;
+printf('\n No of voice channels for N=4 are %d',No_ofVCH);
+disp("");
+disp("Using the Erlang-B traffic table for 122 channels with 2% blocking,we find a traffic load of 110 Erlangs. ");
+TrafLoad=110;
+CarryLoad=(1-Blocking)*TrafLoad;
+Ncall=CarryLoad*3600/callHT;
+printf('\n Calls per hour per cell for N=4 are %d calls/hour/cell \n ',round(Ncall));
+S_I=10*(PPL/2)*(log10(N)-log10(1/3)-(2/PPL)*log10(6));
+printf('\n Mean S/I(dB) for N=4 is %.1f dB \n ',S_I);
-- 
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