Digital Communication Questions and Answers
Q1.
The measure of the width of the main lobe is called as ____
Answer :
Null to null bandwidth
Q2.
Which gives the measure of randomness of the random variable?
Answer :
Variance
Q3.
Standard deviation is ____
Answer :
Rms value or ac
Q4.
Power spectrum describes distribution of _____ under frequency domain.
Answer :
Variance
Q5.
Autocorrelation is a function which matches
Answer :
One signal with its delayed version
Q6.
Autocorrelation function of white noise will have?
Answer :
Strong peak
Q7.
Discrete impulse signal is a power or energy signal?
Answer :
Energy signal
Q8.
What is the ASCII value of space?
Answer :
32
Q9.
Source coding block is used for?
Answer :
1. Compressing
2. Digitizing
3. A/D conversion
Q10.
Which requires interpolation filtering?
Answer :
Up-sampler & D to A converter
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