Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Q4 please answer base on your observation.
Transcribed Image Text:Question 4. Select the correct statement after executing the MatLab code with the above
+changes.
a. It is difficult to see frequency changes in the modulated signal because logical "1s" and "Os" are
represented by the same line frequency (i.e., f1 = f2).
b. The unmodulated carrier wave amplitude has been reduced to 2v, therefore the FSK modulated
signal cannot represent the logical data.
c. Since f1 = f2, the frequency changes are consistent with the logical data (i.e., the FSK modulated
signal accurately represents the logical data).
%D
%3D
d. All statements are correct.
Simple Logical Data
1
-1
1
2
3
7
8
Carrier Wave
-5
1
2
3
4
6
7
8.
Combined Logical Data and FSK Modulated Carrier
-5
1
2
4
6.
7
8.
time
LO
amplitude
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