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Performance Analysis and Optimization in Downlink NOMA Systems With Cooperative Full-Duplex Relaying
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. KTH, School of Electrical Engineering (EES), Information Science and Engineering.ORCID iD: 0000-0002-5407-0835
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2017 (English)In: IEEE Journal on Selected Areas in Communications, ISSN 0733-8716, E-ISSN 1558-0008, Vol. 35, no 10, p. 2398-2412Article in journal (Refereed) Published
Abstract [en]

We study a downlink non-orthogonal multiple access system with cooperative full-duplex relaying, where the near user in terms of the base station (BS) is enabled to act as a full-duplex relay for the far user. In particular, we first derive the outage probability and ergodic sum rate with closed-form expressions when the power allocations at the BS and relay (or the near user) are fixed. Then, we analytically obtain the optimal power allocations with closed-form expressions at the BS and relay to minimize the outage probability. Furthermore, by taking the fairness between the near user and far user into account, we characterize the optimal power allocations with closed-form expressions at the BS and relay to maximize the minimum achievable rate of users. Simulation results validate the correctness of the theoretical analysis and demonstrate the advantages of the proposed algorithms over the state of the art.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2017. Vol. 35, no 10, p. 2398-2412
Keywords [en]
Achievable rate, cooperative relaying, full-duplex, NOMA, outage probability
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-214865DOI: 10.1109/JSAC.2017.2724678ISI: 000410646800016Scopus ID: 2-s2.0-85023170744OAI: oai:DiVA.org:kth-214865DiVA, id: diva2:1152343
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QC 20171024

Available from: 2017-10-24 Created: 2017-10-24 Last updated: 2017-10-24Bibliographically approved

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Xiao, Ming

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
  • en-GB
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  • nn-NB
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  • Other locale
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Output format
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