Throughput Maximization in Multi-User Cooperative Cognitive Radio Networks

In Cooperative Cognitive Radio Networks (CCRNs), primary users and secondary users are mutual beneficial through setting up cooperative transmission. But, in most of the existing work, only the SUs working as the relays can have the opportunities to access primary users’ channel, which may incur a waste of resource or a throughput reduction if the relays have light data traffic. In this paper, to tackle this issue while fully exploiting cooperative transmission, we propose a novel scheme GMLDF-Cooperation to achieve multi-path cooperation transmission of primary transmitters and provide all secondary users with a chance to send their own data. Our theoretical analysis and simulation results can validate the effectiveness of the proposed algorithm.

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