A slotted ALOHA-based cognitive radio network under capture effect in Rayleigh fading channels

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dc.contributor.authorBayrakdar, Muhammed Enes
dc.contributor.authorAtmaca, Sedat
dc.contributor.authorKarahan, Alper
dc.date.accessioned2020-04-30T14:39:12Z
dc.date.available2020-04-30T14:39:12Z
dc.date.issued2016
dc.departmentDÜ, Mühendislik Fakültesi, Bilgisayar Mühendisliği Bölümüen_US
dc.description.abstractIn this paper, a slotted ALOHA-based cognitive radio (CR) network is proposed and the throughput performance of the proposed CR network model under Rayleigh fading channels is examined. Our CR network contains two special groups of users, primary users (PUs) and CR users (CRUs), and they are considered to be sharing a timeslotted-based common communication channel. While PUs can access the channel at any time owing to their legal right, CRUs can only access the channel when it is not occupied by the PUs. In the network model developed, PUs access the channel utilizing time division multiple access as a medium access control technique, and CRUs can access the channel by exploiting slotted ALOHA as a random access scheme when the channel is idle. In the proposed network model additive white Gaussian noise and Rayleigh channels is considered for comparison reasons. Taking capture effect into account in Rayleigh fading channels, we have obtained new equations for the throughput of the proposed CR network. We have also developed, modeled, and simulated a sample networking scenario by using MATLAB with the aim of validating the analytical throughput results. Simulation results of the proposed network model precisely match with the analytical results obtained under different network load conditions. Furthermore, it is shown that the overall channel exploitation is increased by utilizing the spectrum holes without interfering with the PUs transmissions.en_US
dc.identifier.endpage1966en_US
dc.identifier.issn1300-0632
dc.identifier.issn1300-0632
dc.identifier.issue3en_US
dc.identifier.startpage1955en_US
dc.identifier.urihttps://app.trdizin.gov.tr/makale/TWpRMU16WXlNZz09
dc.identifier.urihttps://hdl.handle.net/20.500.12684/1329
dc.identifier.volume24en_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isoenen_US
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectMühendisliken_US
dc.subjectElektrik ve Elektroniken_US
dc.titleA slotted ALOHA-based cognitive radio network under capture effect in Rayleigh fading channelsen_US
dc.typeArticleen_US

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