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IEEE Communications Letters > 2010 > 14 > 5 > 450 - 452
IEEE Transactions on Wireless Communications > 2010 > 9 > 2 > 714 - 722
Electronics Letters > 2008 > 44 > 3 > 217 - 219
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3613 - 3626