IEEE Communications Letters
IEEE Communications Letters > 2013 > 17 > 5 > 852 - 855
IEEE Communications Letters > 2013 > 17 > 5 > 884 - 887
IEEE Communications Letters > 2013 > 17 > 5 > 852 - 855
IEEE Communications Letters > 2013 > 17 > 5 > 884 - 887