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dc.contributor.authorCelik, Abdulkadir
dc.contributor.authorKamal, Ahmed E.
dc.date.accessioned2017-05-31T11:23:09Z
dc.date.available2017-05-31T11:23:09Z
dc.date.issued2016-09-12
dc.identifier.citationCelik A, Kamal AE (2016) Green Cooperative Spectrum Sensing and Scheduling in Heterogeneous Cognitive Radio Networks. IEEE Transactions on Cognitive Communications and Networking 2: 238–248. Available: http://dx.doi.org/10.1109/tccn.2016.2608337.
dc.identifier.issn2332-7731
dc.identifier.doi10.1109/tccn.2016.2608337
dc.identifier.urihttp://hdl.handle.net/10754/623840
dc.description.abstractIn this paper, we consider heterogeneous cognitive radio networks (CRNs) comprising primary channels (PCs) with heterogeneous characteristics and secondary users (SUs) with various sensing and reporting qualities for different PCs. We first define the opportunity as the achievable total data rate and its cost as the energy consumption caused from sensing, reporting, and channel switching operations and formulate a joint spectrum discovery and energy efficiency objective to minimize the energy spent per unit of data rate. Then, a mixed integer nonlinear programming problem is formulated to determine: 1) the optimal subset of PCs to be scheduled for sensing; 2) the SU assignment set for each scheduled PC; and 3) sensing durations and detection thresholds of each SU on PCs it is assigned to sense. Thereafter, an equivalent convex framework is developed for specific instances of the above combinatorial problem. For comparison, optimal detection and sensing thresholds are also derived analytically under the homogeneity assumption. Based on these, a prioritized ordering heuristic is developed to order channels under the spectrum, energy, and spectrum-energy limited regimes. After that, a scheduling and assignment heuristic is proposed and is shown to perform very close to the exhaustive optimal solution. Finally, the behavior of the CRN is numerically analyzed under these regimes with respect to different numbers of SUs, PCs, and sensing qualities.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttp://ieeexplore.ieee.org/document/7564408/
dc.subjectchannel switching
dc.subjectEnergy and throughput efficient
dc.subjectcooperative spectrum sensing
dc.subjectmulti-channel sensing scheduling
dc.subjectPoisson-Binomial
dc.titleGreen Cooperative Spectrum Sensing and Scheduling in Heterogeneous Cognitive Radio Networks
dc.typeArticle
dc.contributor.departmentCommunication Theory Lab
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalIEEE Transactions on Cognitive Communications and Networking
dc.contributor.institutionDepartment of Electrical and Computer Engineering, Iowa State University, Ames, IA, USA
kaust.personCelik, Abdulkadir
dc.date.published-online2016-09-12
dc.date.published-print2016-09


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