IEEE Communications Letters
IEEE Communications Letters > 2012 > 16 > 4 > 526 - 529
IEEE Communications Letters > 2012 > 16 > 4 > 439 - 441
IEEE Communications Letters > 2012 > 16 > 4 > 526 - 529
IEEE Communications Letters > 2012 > 16 > 4 > 439 - 441