IEEE Communications Letters
IEEE Communications Letters > 2008 > 12 > 6 > 408 - 410
IEEE Communications Letters > 2008 > 12 > 6 > 417 - 419
IEEE Communications Letters > 2008 > 12 > 6 > 408 - 410
IEEE Communications Letters > 2008 > 12 > 6 > 417 - 419