QoE-driven resource allocation for D2D underlaying NOMA cellular networks

Liangyu Chen, Bo Hu, Shanzhi Chen, Guixian Xu

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

Device-to-device (D2D) communication can significantly improve network coverage and spectral efficiency. Meanwhile, non-orthogonal multiple access (NOMA) has recently been integrated with D2D communication to further improve connection density and satisfy explosive data rate requirements of end users. Considering quality of experience (QoE) has become an important indicator from the user perspective, in this paper, we study the QoE-driven resource allocation problem in a device-to-device (D2D) underlaying NOMA cellular network coexisting with D2D pairs and NOMA-based cellular users (CUs). Our target is to maximize the sum mean opinion scores (MOSs) of all users while guaranteeing the minimum QoE requirement of each CU and D2D pair, by jointly optimizing subchannel assignment and power allocation at CUs and D2D pairs. Since this problem is mixed-integer and non-convex, we first transform it into an equivalent yet more tractable form. Then, a two-stage iterative algorithm based on the alternating optimization framework and constrained concave-convex procedure technique is proposed to optimize subchannel assignment and power allocation alternately. Simulation results show that the proposed scheme outperforms the orthogonal multiple access solution and three NOMA based benchmark schemes in terms of QoE performance.

Original languageEnglish
Title of host publication2021 IEEE Wireless Communications and Networking Conference, WCNC 2021
PublisherIEEE
Number of pages6
ISBN (Electronic)9781728195056
DOIs
Publication statusPublished - 2021
Publication typeA4 Article in a conference publication
EventIEEE Wireless Communications and Networking Conference - , China
Duration: 29 Mar 20211 Apr 2021

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume2021-March
ISSN (Print)1525-3511

Conference

ConferenceIEEE Wireless Communications and Networking Conference
Country/TerritoryChina
Period29/03/211/04/21

Keywords

  • D2D
  • NOMA
  • Power allocation
  • QoE
  • Subchannel assignment

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Engineering(all)

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