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 2Eg.
(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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