System-level performance of C-NOMA: a cooperative scheme for capacity enhancements in 5G mobile networks

Andrea Marcano, Henrik Lehrmann Christiansen

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Abstract

Non-orthogonal Multiple Access (NOMA) is a promising scheme for improving the capacity of 5G networks. Since not all the users (UEs) in a cell are good candidates for NOMA, hybrid multiple access (MA) systems where NOMA and the typical orthogonal multiple access (OMA) schemes are combined, are expected. In this paper we propose cooperative NOMA (C-NOMA), which is based on cooperative scheduling and load balancing among a group of cells. Results from our system-level performance analysis show that in scenarios where only some cells are fully loaded, C-NOMA offers up to 3.5-fold increase in the UEs throughput compared to non-cooperative NOMA (NC-NOMA). Moreover, the cells experienced a capacity increase between 12-18%. Therefore, C-NOMA is an appealing scheme for improving the capacity in groups of cells with very unequal load, e.g. hotspot areas.
Original languageEnglish
Title of host publication2017 IEEE 86th Vehicular Technology Conference (VTC-Fall)
Number of pages6
PublisherIEEE
Publication date2017
ISBN (Electronic)978-1-5090-5935-5
DOIs
Publication statusPublished - 2017
Event2017 IEEE 86th Vehicular Technology Conference - Hilton Toronto, Toronto, Canada
Duration: 24 Sep 201727 Sep 2017

Conference

Conference2017 IEEE 86th Vehicular Technology Conference
LocationHilton Toronto
CountryCanada
CityToronto
Period24/09/201727/09/2017

Keywords

  • Cooperative NOMA
  • NOMA
  • Hybrid MA
  • 5G
  • Capacity
  • Throughoput

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