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IEEE Communications Letters > 2013 > 17 > 4 > 641 - 644
IEEE Communications Letters > 2012 > 16 > 5 > 658 - 661
IEEE Transactions on Communications > 2011 > 59 > 11 > 3146 - 3157
IEEE Transactions on Wireless Communications > 2010 > 9 > 7 > 2125 - 2129
IEEE Transactions on Wireless Communications > 2009 > 8 > 9 > 4762 - 4772