IEEE Communications Letters
IEEE Communications Letters > 2012 > 16 > 9 > 1408 - 1411
IEEE Communications Letters > 2012 > 16 > 9 > 1496 - 1499
IEEE Communications Letters > 2012 > 16 > 9 > 1408 - 1411
IEEE Communications Letters > 2012 > 16 > 9 > 1496 - 1499