IEEE Communications Letters
IEEE Communications Letters > 2010 > 14 > 11 > 1032 - 1034
IEEE Communications Letters > 2012 > 16 > 1 > 54 - 56
IEEE Communications Letters > 2012 > 16 > 9 > 1474 - 1477
IEEE Communications Letters > 2016 > 20 > 1 > 185 - 188