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IEEE Transactions on Communications > 2010 > 58 > 3 > 997 - 1006
IEEE Communications Letters > 2009 > 13 > 6 > 375 - 377
IEEE Transactions on Wireless Communications > 2009 > 8 > 3 > 1284 - 1294
IEEE Signal Processing Letters > 2008 > 15 > 301 - 304