IEEE Communications Letters
IEEE Communications Letters > 2013 > 17 > 9 > 1710 - 1713
IEEE Communications Letters > 2013 > 17 > 9 > 1774 - 1777
IEEE Communications Letters > 2013 > 17 > 9 > 1710 - 1713
IEEE Communications Letters > 2013 > 17 > 9 > 1774 - 1777