Digital Communication Questions and Answers
Q1.
Which device is needed for the reconstruction of signal?
Answer :
Low pass filter & Equalizer
Q2.
Delay element in delta modulation acts as
Answer :
First order predictor
Q3.
In which mixing is easier?
Answer :
Digital signal
Q4.
In precoding technique, the binary sequence is _____ with the previous precoded bit.
Answer :
EXOR-ed
Q5.
Source encoding procedure does
Answer :
1. Sampling
2. Quantization
3. Compression
Q6.
Which waveform has the feature of error detection?
Answer :
Duobinary
Q7.
Some of the M-ary waveforms are
Answer :
1. PAM
2. PPM
3. PDM
Q8.
When pulse code modulation is applied to non binary symbols we obtain waveform called as
Answer :
M-ary
Q9.
NRZ-S is complement of ____
Answer :
NRZ-M
Q10.
In which waveform logic 1 is represented by equal amplitude alternating pulses?
Answer :
RZ-AMI
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