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/CH11/EX11.6/Ex11_6.sce | 75 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 3446/CH11/EX11.6/Ex11_6.sce

(limited to '3446/CH11/EX11.6/Ex11_6.sce')

diff --git a/3446/CH11/EX11.6/Ex11_6.sce b/3446/CH11/EX11.6/Ex11_6.sce
new file mode 100644
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+++ b/3446/CH11/EX11.6/Ex11_6.sce
@@ -0,0 +1,75 @@
+// Exa 11.6
+// To show how the signal is recovered at mobile by using two-rake receivers.
+
+clc;
+clear all;
+
+//solution
+disp("As we are given that actual bit values for mobile are [1 0 0 1 1] ");
+M1=[1 0 0 1 1];
+
+Rx1={[1 1 1 1 -3 1];[1 -3 1 1 1 1 ];[1 -3 1 1 1 -3];[1 -3 1 1 1 1];[-1 3 3 -1 3 -1];[1 -1 -1 0 0 0]};//Resultant demodulated signal at mobile(Z(t)) from path1
+
+Rx2={[-1 -1 1 1 1 1 ];[-3 1 1 -3 1 1 ];[1 1 1 -3 1 1 ];[1 -3 1 -3 1 1 ];[1 1 -1 3 3 -1 ];[3 1 -1 0 0 0]};//Resultant demodulated signal at mobile(Z(t-2Tc)) from path2
+
+Rx=Rx1+Rx2; //since,Z(t)=z(t)+Z(t-2Tc)
+
+//from Figure 11.13 (d) & Figure 11.14
+c1={[-1 -1 -1 -1 1 1];[1 -1 1 1 -1 -1];[1 -1 1 -1 -1 -1];[-1 1 1 1 -1 1];[1 -1 -1 1 -1 1]};
+c2={[-1 1 -1 -1 -1 -1 ];[1 1 1 -1 1 1 ];[-1 -1 1 -1 1 -1 ];[-1 -1 -1 1 1 1 ];[-1 1 1 -1 -1 1 ];[-1 1 0 0 0 0]};
+
+//case-1:Z(t)*C1(t);
+for i= 1:5
+      
+Demod_1(i)=c1(i,1)*Rx(i,1)+c1(i,2)*Rx(i,2)+c1(i,3)*Rx(i,3)+c1(i,4)*Rx(i,4)+c1(i,5)*Rx(i,5)+c1(i,6)*Rx(i,6);
+if(Demod_1(i)<0)
+    B1(i)=1;
+else
+    B1(i)=0;
+    end
+end
+
+//case-2:Z(t)*C1(t-2Tc);
+for j=1:5
+
+Demod_2(j)=c2(j,3)*Rx(j,3)+c2(j,4)*Rx(j,4)+c2(j,5)*Rx(j,5)+c2(j,6)*Rx(j,6)+c2(j+1,1)*Rx(j+1,1)+c2(j+1,2)*Rx(j+1,2);
+if(Demod_2(j)<0)
+    B2(j)=1;
+else
+    B2(j)=0;
+    end
+ end
+   disp("case-1:z(t)*c1(t)");
+disp("Value of integration at end of bit period for mobile(case-1)");
+disp(Demod_1');
+disp("The recovered signal at mobile(case-1) is ");
+disp(B1');
+disp("Actual bit values are");
+disp(M1);
+disp("Recovered and actual values are not matching");
+disp("case-2:z(t)*c1(t-2Tc)");
+disp("Value of integration at end of bit period for mobile(case-2)");
+disp(Demod_2');
+disp("The recovered signal at mobile(case-2) is ");
+disp(B2');
+disp("Actual bit values are");
+disp(M1);
+disp("Recovered and actual values are not matching");
+//case3-Sum of path1 and path2
+disp("case-3:Sum of path1 & path2 integrator");
+disp("Sum of integrator outputs(rake receiver output)");
+Demod_3=Demod_1+Demod_2;
+disp(Demod_3');
+for k=1:5
+
+if(Demod_3(k)<0)
+    B3(k)=1;
+else
+    B3(k)=0;
+end
+end
+disp("Detected bit value ");
+disp(B3');
+disp("Actual bit values are");
+disp(M1);
+disp("Recovered and actual values are matching");
-- 
cgit