NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Dynamic Spectrum Access with QoS and Interference Temperature Constraints
IEEE Transactions on Mobile Computing
CREAM-MAC: An efficient Cognitive Radio-enAbled Multi-Channel MAC protocol for wireless networks
WOWMOM '08 Proceedings of the 2008 International Symposium on a World of Wireless, Mobile and Multimedia Networks
A multi-channel MAC for opportunistic spectrum sharing in cognitive networks
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Cooperative Spectrum Sensing in Cognitive Radio, Part II: Multiuser Networks
IEEE Transactions on Wireless Communications
Limits on communications in a cognitive radio channel
IEEE Communications Magazine
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Impact of Quality of Service Constraints on the Performance of Spectrum Sharing Cognitive Users
Wireless Personal Communications: An International Journal
Queue Model Analysis for Spectrum-Sharing Cognitive Systems Under Outage Probability Constraint
Wireless Personal Communications: An International Journal
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This paper proposes an adaptive code division multiple access (CDMA) based cognitive medium access control (MAC) scheme for uplink cognitive radio networks. The proposed scheme addresses the joint channel sensing and data transmission, power and rate assignments, and long-term fairness. Under our proposed scheme, the secondary users (SUs) can adaptively select either the intrusive spectrum sharing or non-intrusive spectrum sharing operations to transmit data to secondary basestation (SBS) based on the channel utilization, traffic load, and the interference constraints. Our proposed scheme enables the SUs to efficiently utilize the frequency spectrum which is licensed to the primary users (PUs) while rigorously limiting the interference to the PUs. Also conducted are simulations to validate and verify our proposed scheme.