Integrating Broadcasting and NOMA in Full-Duplex Buffer-Aided Opportunistic Relay Networks

Nikolaos Nomikos*, Themistoklis Charalambous, Demosthenes Vouyioukas, Risto Wichman, George K. Karagiannidis

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)
114 Downloads (Pure)


This paper proposes the integration of non-orthogonal multiple access (NOMA) and broadcasting with buffer-aided (BA) full-duplex (FD) relaying to improve the spectral efficiency of a single-source two-user network. Furthermore, opportunistic relay selection is employed, activating one or two FD relays to support the end-to-end communication. The network performance is improved through buffers, allowing to switch to half-duplex (HD) transmission/reception when FD operation is not feasible. A hybrid BA FD/HD NOMA relay selection algorithm is proposed, herein called BAHyNOMA, orchestrating the three aforementioned techniques, towards a simple yet efficient and robust relay selection. BAHyNOMA is evaluated in terms of outage probability, average sum-rate and average delay, and it is observed that the average sum-rate can be doubled, while maintaining low latency.

Original languageEnglish
Article number9107483
Pages (from-to)9157-9162
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Issue number8
Publication statusPublished - Aug 2020
MoE publication typeA1 Journal article-refereed


  • Non-orthogonal multiple access
  • Full-duplex
  • Buffer-aided relaying
  • Broadcasting
  • Relay selection
  • Nonorthogonal Multiple-Access
  • Performance Analysis
  • Cooperative Noma
  • Selection
  • Systems
  • Power


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