1
GATE ECE 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
In a digital communication system, the overall pulse shape p(t) at the receiver before the sampler has the Fourier transform P(f). If the symbols are transmitted at the rate of 2000 symbols per second, for which of the following cases is inter symbol interference zero?
A
GATE ECE 2017 Set 1 Communications - Digital Communication Systems Question 42 English Option 1
B
GATE ECE 2017 Set 1 Communications - Digital Communication Systems Question 42 English Option 2
C
GATE ECE 2017 Set 1 Communications - Digital Communication Systems Question 42 English Option 3
D
GATE ECE 2017 Set 1 Communications - Digital Communication Systems Question 42 English Option 4
2
GATE ECE 2017 Set 1
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following statements about differential pulse code modulation (DPCM) is true?
A
The sum of message signal sample with its prediction is quantized
B
The message signal sample is directly quantized, and its prediction is not used
C
The difference of message signal sample and a random signal is quantized
D
The difference of message signal sample with its predictions is quantized
3
GATE ECE 2016 Set 2
Numerical
+1
-0
A speech signal is sampled at 8 kHz and encoded into PCM format using 8 bits/sample. The PCM data is transmitted through a baseband channel via 4-level PAM. The minimum bandwidth (in kHz) required for transmission is _________.
Your input ____
4
GATE ECE 2016 Set 1
Numerical
+1
-0
Consider binary data transmission at a rate of 56 kbps using baseband binary pulse amplitude modulation (PAM) that is designed to have a raised-cosine spectrum. The transmission bandwidth (in kHz) required for a roll-off factor of 0.25 is ______.
Your input ____
GATE ECE Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12