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IEEE Transactions on Communications > 2017 > 65 > 1 > 136 - 146
IEEE Communications Surveys & Tutorials > 2013 > 15 > 1 > 167 - 178
IEEE Transactions on Communications > 2017 > 65 > 1 > 136 - 146
IEEE Communications Surveys & Tutorials > 2013 > 15 > 1 > 167 - 178