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IEEE Transactions on Communications > 2009 > 57 > 11 > 3298 - 3306
IEEE Communications Letters > 2009 > 13 > 4 > 257 - 259
IEEE Transactions on Communications > 2009 > 57 > 2 > 307 - 310
IEEE Transactions on Communications > 2008 > 56 > 7 > 1169 - 1177