Question 21 : Decision making needs
1. Priors
2. Likelihoods
3. Priors & Likelihoods
4. None of the mentioned
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Question 22 : The technique for combining diversity signals are
1. Feedback
2. Maximal ratio
3. Equal gain
4. All of the mentioned
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Question 23 : Rake receivers are used in
1. Radio astronomy
2. CDMA
3. W-CDMA
4. All of the mentioned
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Question 24 : What are the modes of adaptive equalizer?
1. Training mode
2. Tracking mode
3. Training & Tracking mode
4. None of the mentioned
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Question 25 : Large scale fading refers the attenuation in
1. Amplitude
2. Phase
3. Signal power
4. None of the mentioned
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Question 26 : What is the source for performance degradation?
1. Thermal noise
2. Man made noise
3. Natural noise
4. All of the mentioned
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Question 27 : Frequency tracking loop can minimize irreducible error rate by using
1. GMSK
2. DMSK
3. MSK
4. QAM
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Question 28 : Which signalling scheme is preferred for fading channel?
1. Frequency based modulation
2. Phase based modulation
3. Frequency & Phase based modulation
4. None of the mentioned
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Question 29 : Which noise component plays a role in decision making?
1. Relevant noise
2. Non relevant noise
3. Relevant & Non relevant noise
4. None of the mentioned
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Question 30 : Which has higher transmission rate?
1. BPSK
2. 16-QAM
3. BPSK & 16-QAM
4. None of the mentioned
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