IEEE Communications Letters
IEEE Communications Letters > 2008 > 12 > 6 > 447 - 449
IEEE Communications Letters > 2008 > 12 > 6 > 450 - 452
IEEE Communications Letters > 2008 > 12 > 6 > 444 - 446
IEEE Communications Letters > 2008 > 12 > 6 > 447 - 449
IEEE Communications Letters > 2008 > 12 > 6 > 450 - 452
IEEE Communications Letters > 2008 > 12 > 6 > 444 - 446