Digital Communication Questions and Answers
Q1.
Which provides more secure communication?
Answer :
CDMA
Q2.
In bipolar codes, pulses can be
Answer :
1. Positive
2. Negative
3. Absent
Q3.
When probability of receiving a symbol is 1 then how much information will be obtained?
Answer :
No information
Q4.
In time division system, the actual switch is called as
Answer :
Speech memory
Q5.
In M-ary FSK as M tends to infinity, probability of error tends to
Answer :
Zero
Q6.
Which generates high distortion?
Answer :
Class C
Q7.
In a delta modulation system, granular noise occurs when the
Answer :
Modulating signal remains constant
Q8.
A PWM signal can be generated by
Answer :
A monostable multi vibrator
Q9.
Choosing a closely packed signal subset from any regular lattice or array of candidate points is called as
Answer :
Optimum signal constellation boundaries
Q10.
In TCM channel capacity can be increased.
Answer :
True
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