Digital Communication Questions and Answers
Q1.
Rake receiver does
Answer :
Resembles equalizer & Counter effects multi-path fading
Q2.
Multiple isolated peaks in multipath components is called as
Answer :
Fingers & Returns
Q3.
When channel coherence time is less than the time duration of a transmission symbol, then ______ fading occurs.
Answer :
Fast
Q4.
If coherence bandwidth is smaller than the bandwidth of the signal, _____ fading occurs.
Answer :
Frequency selective
Q5.
Frequency tracking loop can minimize irreducible error rate by using
Answer :
DMSK
Q6.
Small scale refers to changes in
Answer :
Amplitude & Phase
Q7.
Uniform quantizer is also known as
Answer :
Mid rise type
Q8.
If step size is increased _____ occurs.
Answer :
Granular noise
Q9.
Non uniform quantizer ______ distortion.
Answer :
Decreases
Q10.
Thermal noise power of a resistor depends upon
Answer :
Noise temperature
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