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IEEE Communications Letters > 2017 > 21 > 12 > 2566 - 2569
IEEE Communications Letters > 2015 > 19 > 9 > 1568 - 1571
IEEE Communications Letters > 2014 > 18 > 10 > 1707 - 1710
IEEE Transactions on Wireless Communications > 2012 > 11 > 3 > 920 - 926