initial commit / add all books

2 files changed, 46 insertions, 0 deletions

diff --git a/851/CH4/EX4.1/Example4_1.sce b/851/CH4/EX4.1/Example4_1.sce
new file mode 100755
index 000000000..142ba3e6c
--- /dev/null
+++ b/851/CH4/EX4.1/Example4_1.sce
@@ -0,0 +1,29 @@
+//clear//

+//Caption:Bound on Aliasing error for Time-shifted sinc pulse

+//Example4.1:Maximum bound on aliasing error for sinc pulse

+clc;

+close;

+t = -1.5:0.01:2.5;

+g = 2*sinc_new(2*t-1);

+disp(max(g),'Aliasing error cannot exceed max|g(t)|')

+f = -1:0.01:1;

+G = [0,0,0,0,ones(1,length(f)),0,0,0,0];

+f1 = -1.04:0.01:1.04;

+subplot(2,1,1)

+a=gca();

+a.data_bounds =[-3,-1;2,2];

+a.x_location = "origin"

+a.y_location = "origin"

+plot2d(t,g)

+xlabel('                                      t')

+ylabel('                                      g(t)')

+title('Figure 4.8 (a) Sinc pulse g(t)')

+subplot(2,1,2)

+a=gca();

+a.data_bounds =[-2,0;2,2];

+a.x_location = "origin"

+a.y_location = "origin"

+plot2d2(f1,G)

+xlabel('                                      f')

+ylabel('                                      G(f)')

+title('Figure 4.8 (b) Amplitude spectrum |G(f)|')

diff --git a/851/CH4/EX4.3/Example4_3.sce b/851/CH4/EX4.3/Example4_3.sce
new file mode 100755
index 000000000..d80adfd3b
--- /dev/null
+++ b/851/CH4/EX4.3/Example4_3.sce
@@ -0,0 +1,17 @@
+//clear//

+//Caption:Equalizer to compensate Aperture effect

+//Example4.3:Equalizer to Compensate for aperture effect

+clc;

+close;

+T_Ts = 0.01:0.01:0.6;

+//E = 1/(sinc_new(0.5*T_Ts));

+E(1) =1;

+for i = 2:length(T_Ts)

+  E(i) = ((%pi/2)*T_Ts(i))/(sin((%pi/2)*T_Ts(i)));

+end

+a =gca();

+a.data_bounds = [0,0.8;0.8,1.2];

+plot2d(T_Ts,E,5)

+xlabel('Duty cycle T/Ts')

+ylabel('1/sinc(0.5(T/Ts))')

+title('Figure 4.16 Normalized equalization (to compensate for aperture effect) plotted versus T/Ts')