Τίτλος:
Spectral efficiency of cognitive radio networks under interference constraint and QoS guarantees
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
We study the problem of maximizing spectral efficiency of cognitive radio network deployments subject to an interference constraint and under specific quality of service (QoS) guarantees. The interference constraint corresponds to the upper limit of the received power that can be tolerated at the licensed users' due to transmissions from unlicensed users. The QoS guarantees stem from the requirements imposed by the applications running at the users' terminals. A cross-layer design is adopted that maps the user's requirements into delay related QoS guarantees at the data link layer and error probability QoS guarantees at the physical layer. The obtained numerical results provide important insights regarding the impact of the considered constraint and guarantees on the achievable spectral efficiency of cognitive radio networks. © 2012 Elsevier Ltd. All rights reserved.
Συγγραφείς:
Foukalas, F.T.
Karetsos, G.T.
Merakos, L.
Περιοδικό:
Computers and Electrical Engineering
Λέξεις-κλειδιά:
Cognitive radio network; Cross-layer design; Data link layer; Error probabilities; Interference constraints; Licensed users; Numerical results; Physical layers; QoS guarantee; Quality of service guarantees; Received power; Spectral efficiencies; Upper limits, Cognitive radio; Network layers; Radio systems; Spectrum analyzers, Quality of service
DOI:
10.1016/j.compeleceng.2011.07.005
