
UNIT IV REVISION
Authored by Ms.S Sheela
Physical Ed, Education
Professional Development
Used 3+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Coherence time refers to ____________
Time required attaining a call with the busy base station
Time required for synchronization between the transmitter and the receiver
Minimum time for change in magnitude and phase of the channel
None of the mentioned
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Doppler spread refers to _________
Signal fading due to Doppler shift in the channel
Temporary failure of message transfer
Large coherence time of the channel as compared to the delay constraints
All of the mentioned
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is not used to improve received signal quality over small scale times and distance?
Modulation
Equalization
Diversity
Channel coding
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Equalization is used to compensate __________
Peak signal to noise ratio
Intersymbol interference
Channel fading
Noises present in the signal
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Training and tracking are the operating modes of _________
Diversity techniques
Channel coding techniques
Equalization techniques
Demodulation techniques
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An equalizer is said to be converged when it is properly _______
Trained
Tracked
Installed
Used
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Time for convergence of an equalizer is not a function of _______
Equalizer algorithm
Equalizer structure
Time rate of change of multipath radio channel
Transmitter characteristics
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