Performance Analysis of OSTBC-NOMA System in the Presence of Practical Impairments

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dc.contributor.authorToka, Mesut
dc.contributor.authorKucur, Oguz
dc.date.accessioned2024-11-07T13:25:24Z
dc.date.available2024-11-07T13:25:24Z
dc.date.issued2020
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractThis paper investigates the performance of a powerdomain downlink non-orthogonal multiple access (NOMA) system in the presence of practical impairments such as channel estimation error (CEE), feedback delay (FBD) and imperfect successive interference cancellation (SIC), where the base station communicates with multiple users by applying orthogonal space-time block coding (OSTBC) technique in order to exploit the benefits of transmit diversity. Outage probability (OP), ergodic capacity and fairness index analyses are conducted in case channels are subjected to Nakagami-m fading in order to illustrate the level of system performance, and closed-form mathematical expressions are obtained. Furthermore, to demonstrate the impact of CEE and FBD, asymptotic OP is also maintained. The analytical results validated by MonteCarlo simulations demonstrate that all performancemetrics reach a non-zero fixed value in high signal-to-noise region due to the CEE and FBD while imperfect SIC worsens the performance of user with the lowest power allocation to the full outage. In addition, NOMA outperforms its counterpart orthogonal multiple access in terms of OP and ergodic capacity generally. Also, G2-OSTBC code has higher fairness index than G3-OSTBC code.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUB. ITAK) [EEEAG 118E274]
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey (TUB. ITAK) under Grant EEEAG 118E274. The review of this article was coordinated by Prof. H.-F. Lu.
dc.identifier.doi10.1109/TVT.2020.3001742
dc.identifier.endpage9706
dc.identifier.issn0018-9545
dc.identifier.issn1939-9359
dc.identifier.issue9
dc.identifier.startpage9697
dc.identifier.urihttps://doi.org/10.1109/TVT.2020.3001742
dc.identifier.urihttps://hdl.handle.net/11480/14686
dc.identifier.volume69
dc.identifier.wosWOS:000577995300036
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherIEEE-Inst Electrical Electronics Engineers Inc
dc.relation.ispartofIeee Transactions on Vehicular Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectNon-orthogonal multiple access
dc.subjectOSTBC
dc.subjectNakagami-m
dc.subjectchannel estimation error
dc.subjectfeedback delay
dc.subjectsuccessive interference cancellation
dc.subjectfairness index
dc.titlePerformance Analysis of OSTBC-NOMA System in the Presence of Practical Impairments
dc.typeArticle

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