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Proportional Fair Scheduling for Downlink Single-Carrier NOMA Systems
Rhein Westfal TH Aachen, Inst Networked Syst, Kackertstr 9, D-52072 Aachen, Germany..
KTH, School of Information and Communication Technology (ICT).
2017 (English)In: Globecom 2017 - 2017 IEEE Global Communications Conference, Institute of Electrical and Electronics Engineers (IEEE), 2017Conference paper, Published paper (Refereed)
Abstract [en]

The non-orthogonal multiple access (NOMA) has been investigated recently as a candidate radio access technology for future wireless networks. This paper focuses on the proportional fair scheduling (PFS) for downlink single-carrier NOMA systems. Assuming an ideal NOMA system with an arbitrary number of multiplexed users, we derive a closed-form solution of the optimal power allocation for PFS. Based on this solution, we design a low-complexity algorithm for joint power allocation and user set selection (USS). Its performance is an upper bound for various PFS schemes in practical NOMA systems where the number of multiplexed users is limited. We utilize this algorithm to pre-select the candidate users and propose a pre-selection-based USS (PSU) scheme. The performance of the PSU scheme and various existing PFS schemes in the literature is evaluated by simulations and compared with the upper bound obtained in the ideal NOMA system. The proposed PSU scheme achieves the optimal performance that is close to the upper bound. Moreover, its computational complexity is significantly reduced and is nearly linear in the number of users.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2017.
Series
IEEE Global Communications Conference, ISSN 2334-0983
Keywords [en]
Non-orthogonal multiple access, power allocation, user set selection, proportional fair scheduling
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-226851DOI: 10.1109/GLOCOM.2017.8254921ISI: 000428054305032Scopus ID: 2-s2.0-85046334446ISBN: 978-1-5090-5019-2 OAI: oai:DiVA.org:kth-226851DiVA, id: diva2:1204441
Conference
IEEE Global Communications Conference (GLOBECOM), DEC 04-08, 2017, YourSingapore, Singapore, Singapore
Note

QC 20180508

Available from: 2018-05-08 Created: 2018-05-08 Last updated: 2018-06-04Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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