IEEE Communications Letters
IEEE Communications Letters > 2008 > 12 > 2 > 158 - 160
IEEE Communications Letters > 2008 > 12 > 11 > 858 - 860
IEEE Communications Letters > 2008 > 12 > 2 > 158 - 160
IEEE Communications Letters > 2008 > 12 > 11 > 858 - 860