On the performance of 5G non-orthogonal multiple access for vehicular communications at road intersections

Road traffic safety is a crucial issue, and more specifically at road intersections. At the same time, vehicular communications (VCs) are attracting a great attention thanks to their useful safety applications. In this paper, the authors study the performance of VCs at intersections, in the presence of interference when the communication system implements a non-orthogonal multiple access (NOMA) scheme. First, they derive the outage probability and the average achievable rate for a scenario involving a source node and two destination nodes, when the destination nodes can be either on the roads or outside the roads. Then they extend the derivations for K destination nodes. Closed form expressions are obtained for the outage probability and quasi-closed form expressions are obtained for average achievable rate. The analysis takes into account both perfect and imperfect successive interference cancellation (SIC). The authors show that the outage probability increases and the average achievable rate decreases when vehicles move toward the intersection. They also compare the performance of VCs at intersections and at highways, and show that the performance of VCs at intersections is worse than at highways. They compare NOMA with orthogonal multiple access (OMA) in VCs, and show that NOMA outperforms OMA in terms of outage probability and average achievable rate. The authors also show that the benefit of NOMA over OMA becomes greater for high data rates. However, they show that NOMA performance decreases drastically when the system parameters do not respect certain conditions. All the analytical results are validated by Monte-Carlo simulations.

• Record URL:
  https://doi.org/10.1016/j.vehcom.2019.100202
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S2214209619302499
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/22142096
• Supplemental Notes:
  • © 2019 Elsevier Inc. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Belmekki, Baha Eddine Youcef
  • 0000-0002-7634-4032
  • Hamza, Abdelkrim
  • 0000-0003-3619-0240
  • Escrig, Benoît
• Publication Date: 2020-4

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Serial:
  • Vehicular Communications
  • Volume: 22
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 2214-2096
  • Serial URL: http://www.sciencedirect.com/science/journal/22142096/1/2

Subject/Index Terms

• TRT Terms: Highway safety; Intersections; Multi access systems; Network nodes; Vehicle to infrastructure communications; Vehicle to vehicle communications
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01723975
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 30 2019 3:23PM