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This paper studies the problem of determining locations of Secondary Access Points (SAPs) which belong to two competitive service providers in a certain region. SUs connect to the SAP according to their preferences. A key feature of our modeling approach is that it permits SAPs to set discriminatory powers for SUs, that is, SUs in different locations will be scheduled with different transmission powers...
Cognitive radio technology can improve spectrum efficiency by allowing potential secondary users (SUs) to use licensed spectrum when primary users (PUs) are absent. How to share and allocate the unoccupied spectrum among SUs directly affects spectrum utilization. Relay-assisted transmitting in cognitive radio networks (CRN) is an effective technology to improve spectrum utilization and increase transmitting...
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