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IEEE Transactions on Communications > 2014 > 62 > 2 > 442 - 451
IEEE Communications Letters > 2013 > 17 > 8 > 1640 - 1643
IEEE Communications Letters > 2013 > 17 > 4 > 777 - 780
IEEE Communications Letters > 2011 > 15 > 9 > 974 - 976