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IEEE Communications Letters > 2011 > 15 > 5 > 512 - 514
IEEE Transactions on Signal Processing > 2010 > 58 > 3-1 > 1238 - 1250
IEEE Communications Letters > 2011 > 15 > 5 > 512 - 514
IEEE Transactions on Signal Processing > 2010 > 58 > 3-1 > 1238 - 1250