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Questions and Answers
What is the primary focus of digital modulation in electronic communications?
What is the primary focus of digital modulation in electronic communications?
- Processing analog signals
- Varying carrier parameters based on information signal (correct)
- Transporting information through physical cables
- Modulating digital microwave signals
Which type of modulation is used when both amplitude and phase are varied proportional to the information signal?
Which type of modulation is used when both amplitude and phase are varied proportional to the information signal?
- FSK
- QAM (correct)
- ASK
- PSK
What does a high information capacity indicate in a communications system?
What does a high information capacity indicate in a communications system?
- Efficient use of bandwidth (correct)
- Lack of propagation of information
- Decreased number of independent symbols
- Low bandwidth and transmission time
In digital communications, what is a bit rate a measure of?
In digital communications, what is a bit rate a measure of?
Which law states that information capacity is directly proportional to bandwidth and transmission time?
Which law states that information capacity is directly proportional to bandwidth and transmission time?
What is the Shannon limit for information capacity dependent on in a communications system?
What is the Shannon limit for information capacity dependent on in a communications system?
What does M-ary encoding in digital modulation represent?
What does M-ary encoding in digital modulation represent?
What does the term 'Baud' refer to in digital modulation?
What does the term 'Baud' refer to in digital modulation?
In digital modulation, what is a signaling element typically represented by?
In digital modulation, what is a signaling element typically represented by?
What does the Nyquist Formula for Channel Capacity state?
What does the Nyquist Formula for Channel Capacity state?
How does the capacity to propagate data change when more than two levels are used for signaling in digital modulation?
How does the capacity to propagate data change when more than two levels are used for signaling in digital modulation?
Which statement about Baud and bits per second relationship in higher-level systems is true?
Which statement about Baud and bits per second relationship in higher-level systems is true?
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