Digital Communication Questions and Answers
Q1.
Time division multiplexing uses
Answer :
Commutator
Q2.
Entropy of N random variables is the _____ of the entropy of individual random variable.
Answer :
Sum
Q3.
The demodulator in delta modulation technique is
Answer :
Integrator
Q4.
Switching exists in
Answer :
Point to point communication
Q5.
Operations performed by switching system
Answer :
1. Path establishment
2. Information exchange
3. Tariff computation
Q6.
An amplifier uses ______ to take input signal.
Answer :
DC power
Q7.
Free space in idealization which consists
Answer :
Transmitter & Receiver
Q8.
The use of non uniform quantization leads to
Answer :
Increase in SNR for low level signals
Q9.
TDM requires
Answer :
Transmission of data samples
Q10.
In TCM the signals are decoded using
Answer :
Soft decision decoders
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