Digital Communication Questions and Answers
Q1.
Link budget consists of calculation of
Answer :
Useful signal & Interfering noise power
Q2.
Mechanism contributing to a reduction in efficiency is called as
Answer :
1. Amplitude tapering
2. Blockage
3. Edge diffraction
Q3.
The minimum nyquist bandwidth needed for baseband transmission of Rs symbols per second is
Answer :
Rs/2
Q4.
Average effective information is obtained by
Answer :
Subtracting equivocation from entropy
Q5.
In soft decision approach what does -127 mean?
Answer :
Certainly zero
Q6.
The CIRC error control scheme includes
Answer :
Correction & Concealment
Q7.
Separating the symbols makes the channel memory-less.
Answer :
True
Q8.
Concatenated code is an example of
Answer :
Error correcting code
Q9.
The error correcting capability of a code scheme increases as the
Answer :
1. Number of channel symbols per information bit increases
2. Bandwidth increases
3. Information per bit increases
Q10.
A feedback decoder makes hard decision.
Answer :
True
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