Digital Communication Questions and Answers
Q1.
Check-sum scheme has
Answer :
1. Check bits
2. Parity bits
3. Longitudinal redundancy bits
Q2.
Which factor adds phase noise to the signal?
Answer :
Jitter & Phase fluctuations
Q3.
Effective radiated power of an isotropic radiator can be given as a product of
Answer :
Transmitted power and transmitting gain
Q4.
Equivocation is the
Answer :
Conditional entropy
Q5.
Decoders are connected in series.
Answer :
True
Q6.
Compact disc is used for
Answer :
Digital storage & Reproduction of audio signals
Q7.
In interpolation
Answer :
New samples are added & Unreliable samples are removed
Q8.
A concatenated code has
Answer :
Low error rate
Q9.
A catastrophic error is an event whereby ______ number of code symbol error causes _______ number of decoded data error bits.
Answer :
Finite, infinite
Q10.
Which factor is desirable?
Answer :
Maximum correlation
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