Digital Modulation Problems

Question # 00451297 Posted By: schoolbench Updated on: 12/28/2016 09:00 AM Due on: 12/30/2016
Subject Engineering Topic General Electrical Engineering Tutorials:
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1. A communications system uses QPSK instead of binary PSK. How much bandwidth is saved?

2. A modem utilizes 8PSK modulation. If the modem’s baud rate is 24 kbps, what is the information rate in kbps?

3. A 16-QAM modulator with 2 voltage levels uses maps the symbols on equal phases on both voltage levels. Draw the signal space (constellation) for your assumed phase angles.

4. Compare the required bandwidth of 16-QAM with binary PSK.

5. A modem is designed to transmit at 100 kbps over a channel with 15 dB signal to nose ratio. Find the maximum symbols on the constellation of this modem.

6. Repeat the previous problem when the SNR is 35 dB.

Answers need to be in Word format.

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  1. Tutorial # 00447093 Posted By: schoolbench Posted on: 12/28/2016 09:00 AM
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    The solution of Digital Modulation Problems - Tutorial Guide...
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