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IEEE Communications Letters > 2012 > 16 > 2 > 256 - 258
IEEE Transactions on Consumer Electronics > 2010 > 56 > 3 > 1211 - 1217
IEEE Communications Letters > 2010 > 14 > 3 > 199 - 201
IEEE Communications Letters > 2009 > 13 > 5 > 333 - 335