IEEE Communications Letters
IEEE Communications Letters > 2012 > 16 > 5 > 706 - 709
IEEE Communications Letters > 2012 > 16 > 7 > 1072 - 1075
IEEE Communications Letters > 2012 > 16 > 5 > 706 - 709
IEEE Communications Letters > 2012 > 16 > 7 > 1072 - 1075