IEEE Communications Letters
IEEE Communications Letters > 2013 > 17 > 5 > 1032 - 1035
IEEE Communications Letters > 2013 > 17 > 5 > 826 - 829
IEEE Communications Letters > 2013 > 17 > 5 > 1032 - 1035
IEEE Communications Letters > 2013 > 17 > 5 > 826 - 829