Digital Communication Questions and Answers
Q1.
As the synchronization levels increases, cost
Answer :
Increases
Q2.
Which method needs precorrect time?
Answer :
Open loop method
Q3.
Some advantages of spread spectrum are
Answer :
1. Low susceptibility
2. Immunity to jamming
3. Reduced interference
Q4.
Which uses orthogonal codes?
Answer :
Synchronous CDMA
Q5.
Companding is used to
Answer :
To protect all small signals in PCM from quantizing noise
Q6.
Using sampling theorem, analog signal cannot be reconstructed.
Answer :
False
Q7.
Which is based on orthogonality?
Answer :
FDM
Q8.
In slotted system, access is
Answer :
Asynchronous
Q9.
As the number of carriers, the capacity of the transponder
Answer :
Decreases
Q10.
SPADE is a
Answer :
DAMA system
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