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IEEE Communications Letters > 2010 > 14 > 7 > 676 - 678
IEEE Transactions on Signal Processing > 2009 > 57 > 11 > 4443 - 4455
IEEE Communications Letters > 2009 > 13 > 2 > 109 - 111
IEEE Journal on Selected Areas in Communications > 2006 > 24 > 8 > 1535 - 1547