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  • Sum capacity maximization for MIMO?OFDMA based cognitive radio networks

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    Sum capacity maximization for MIMO?OFDMA based cognitive radio networks Abstract? Sum capacity maximization for MIMO?OFDMA based cognitive radio networks. In the opportunistic Cognitive Radio (CR) networks, the secondary users? (SU) capacity is limited due to the need to avoid the primary users? (PUs) bands. The combination of the Multiple-Input Multiple-Output (MIMO) structure with the orthogonal…

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