Digital Communication Questions and Answers
Q1.
In orthogonal signalling with symbols containing more number of bits we need ____ power.
Answer :
More
Q2.
The minimum nyquist sampling rate is given as, fs =
Answer :
1/T
Q3.
The minimum tone separation corresponds to
Answer :
1/T
Q4.
The detection method where carrier’s phase is given importance is called as
Answer :
Coherent detection
Q5.
Which modulation scheme is also called as on-off keying method?
Answer :
ASK
Q6.
Noise figure is a parameter that represents a ______ of the system.
Answer :
Noisiness
Q7.
What are the functions of satellite repeaters?
Answer :
1. Re transmits
2. Regenerates
3. Reconstitutes
Q8.
Field of view is ______ to antenna gain.
Answer :
Inversely proportional
Q9.
In analog receivers, noise bandwidth is _________ signal bandwidth.
Answer :
Greater than
Q10.
Which method requires less redundancy?
Answer :
Error detection
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