Question 21 : PCM includes the process of
1. Amplitude discretization
2. Time discretization
3. Amplitude & Time discretization
4. None of the mentioned
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Question 22 : For more than two quantization level, _______ is used.
1. Hard decision
2. Soft decision
3. Hard & Soft decision
4. None of the mentioned
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Question 23 : The TCM decoder uses
1. Minimum likelihood detector
2. Maximum likelihood detector
3. Does not use redundant bits
4. None of the mentioned
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Question 24 : In TCM channel capacity can be increased.
1. True
2. False
3.
4.
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Question 25 : In a delta modulation system, granular noise occurs when the
1. Modulating signal increases rapidly
2. Pulse rate decreases
3. Pulse amplitude decreases
4. Modulating signal remains constant
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Question 26 : Transmission bandwidth depends on
1. Rate of signalling
2. Density of signal points
3. Reduced distance
4. None of the mentioned
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Question 27 : Which determines the error performance in TCM?
1. Reduced distance
2. Free distance
3. Bandwidth
4. None of the mentioned
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Question 28 : Every frequency has ____ orthogonal functions.
1. One
2. Two
3. Four
4. Six
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Question 29 : Which modulation is selected for power limited system?
1. MPSK
2. MFSK
3. MPSK & MFSK
4. None of the mentioned
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Question 30 : Entropy is the measure of
1. Randomness
2. Information
3. Randomness & Information
4. None of the mentioned
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