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IEEE Communications Magazine > 2009 > 47 > 4 > 74 - 81
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3702 - 3712
IEEE Communications Magazine > 2009 > 47 > 4 > 74 - 81
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3702 - 3712