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IEEE Communications Letters > 2011 > 15 > 4 > 407 - 409
IEEE Transactions on Wireless Communications > 2009 > 8 > 7 > 3566 - 3576
IEEE Communications Letters > 2011 > 15 > 4 > 407 - 409
IEEE Transactions on Wireless Communications > 2009 > 8 > 7 > 3566 - 3576