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IEEE Communications Letters > 2013 > 17 > 3 > 588 - 591
IEEE Communications Letters > 2012 > 16 > 10 > 1699 - 1702
IEEE Communications Letters > 2013 > 17 > 3 > 588 - 591
IEEE Communications Letters > 2012 > 16 > 10 > 1699 - 1702