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Communications
Analog Communication Systems
Marks 1Marks 2
Digital Communication Systems
Marks 1Marks 2Marks 8Marks 10
Random Signals and Noise
Marks 1Marks 2Marks 4
Fundamentals of Information Theory
Marks 1Marks 2
Noise In Digital Communication
Marks 1Marks 2
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1
GATE ECE 1992
MCQ (Single Correct Answer)
+2
-0.6
Source encoding in a data communication system is done in order to
A
enhance the information transmission.
B
band pass filters and envelope rate detectors.
C
conserve the transmitted power.
D
discriminator detection.
2
GATE ECE 1991
Fill in the Blanks
+2
-0
For the signal constellation shown in the figure, the type of modulation is ________. GATE ECE 1991 Communications - Digital Communication Systems Question 38 English
3
GATE ECE 1990
MCQ (Single Correct Answer)
+2
-0.6
In a BPSK signal detector, the local oscillator has a fixed phase error of 200. This phase error deteriorates the SNR at the output by a factor of
A
$$\cos {20^0}$$
B
$${\cos ^2}{20^0}$$
C
$$\cos {70^0}$$
D
$${\cos ^2}{70^0}$$
4
GATE ECE 1989
MCQ (More than One Correct Answer)
+2
-0
In binary data transmission DPSK is preferred to PSK because
A
a coherent carrier is not required to be generated at the receiver.
B
for a given energy per bit, the probability of error is less.
C
the 1800 phase shifts of the carrier are unimportant.
D
more protection is provided against impulse noise.
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Questions Asked from Marks 2
GATE ECE 2024 (1) GATE ECE 2022 (1) GATE ECE 2017 Set 1 (1) GATE ECE 2016 Set 3 (1) GATE ECE 2016 Set 2 (1) GATE ECE 2015 Set 1 (2) GATE ECE 2014 Set 4 (1) GATE ECE 2014 Set 3 (2) GATE ECE 2014 Set 2 (1) GATE ECE 2008 (4) GATE ECE 2007 (4) GATE ECE 2006 (1) GATE ECE 2004 (3) GATE ECE 2003 (3) GATE ECE 2000 (1) GATE ECE 1999 (1) GATE ECE 1996 (1) GATE ECE 1992 (3) GATE ECE 1991 (1) GATE ECE 1990 (1) GATE ECE 1989 (1) GATE ECE 1988 (2)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics