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IEEE Transactions on Wireless Communications > 2009 > 8 > 4 > 1803 - 1813
Electronics Letters > 2008 > 44 > 3 > 219 - 220
IEEE Transactions on Wireless Communications > 2008 > 7 > 8 > 2871 - 2876
IEEE Transactions on Information Theory > 2007 > 53 > 7 > 2490 - 2509