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IEEE Transactions on Wireless Communications > 2009 > 8 > 7 > 3770 - 3779
2008 Congress on Image and Signal Processing > 5 > 39 - 43
IEEE Communications Surveys & Tutorials > 2008 > 10 > 1 > 58 - 69
IEEE Transactions on Signal Processing > 2008 > 56 > 8-1 > 3753 - 3764