Digital Communications Signal Time Spreading Online Exam Quiz
Digital Communications Signal Time Spreading GK Quiz. Question and Answers related to Digital Communications Signal Time Spreading. MCQ (Multiple Choice Questions with answers about Digital Communications Signal Time Spreading
Channel’s time spreading properties are
Options
A : Coherence bandwidth
B : Signal dispersion
C : Coherence bandwidth & Signal dispersion
D : None of the mentioned
Coherence time is _______ to Doppler spread.
Options
A : Directly proportional
B : Inversely proportional
C : Not dependent
D : None of the mentioned
When a user’s moving, the user’s velocity causes shift in frequency. This is called as
Options
A : Doppler shift
B : Frequency shift
C : Velocity shift
D : None of the mentioned
Flat fading can be avoided or stopped by
Options
A : Error coding
B : Equalization
C : Adaptive bit loading
D : All of the mentioned
When channel coherence time is less than the time duration of a transmission symbol, then ______ fading occurs.
Options
A : Fast
B : Slow
C : Time selective
D : None of the mentioned
Multiple isolated peaks in multipath components is called as
Options
A : Fingers
B : Returns
C : Fingers & Returns
D : None of the mentioned
If coherence bandwidth is smaller than the bandwidth of the signal, _____ fading occurs.
Options
A : Flat
B : Frequency selective
C : Fast fading
D : Time selective
Block fading occurs in
Options
A : Frequency domain
B : Time domain
C : Frequency & Time domain
D : None of the mentioned
If delay time is lesser than symbol time, ______ fading occurs.
Options
A : Frequency non selective
B : Flat
C : Frequency non selective & Flat
D : None of the mentioned
If delay time is greater than symbol time, _______ fading occurs.
Options
A : Frequency selective
B : Time selective
C : Frequency non selective
D : None of the mentioned
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