ECE5884 Wireless Communications – Quiz 5 22 August 2022
1. Suppose the bit rate in a wireless communication system is 10 Mbps. What is the symbol rate if the modulation scheme is:
(a) BPSK (b) QPSK
(c) 16-PSK (d) 64-QAM
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2. Consider the two 8-point QAM signal constellations shown below. The min- imum distance between adjacent points is 2√Eg.
(a) What is the average energy per symbol for each constellation assuming that the signal points are equally probable?
(b) Which constellation is more energy efficient?
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