One-layer rate-splitting multiple access with benefits over power-domain NOMA in indoor multi-cell visible light communication networks

Siyu Tao, Hongyi Yu, Qing Li, Yanqun Tang, Di Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A conventional approach to tackle the inter-cell interference in multi-cell visible light communication (VLC) networks is based on non-orthogonal multiple access (NOMA) by allowing one user to fully decode the message of another user. Due to the ability of partially decoding the interference and partially treating it as noise, rate-splitting multiple access (RSMA) has been regarded as a more flexible interference management scheme that generalizes and outperforms NOMA. Motivated by the benefits of RSMA and its infancy in multi-cell VLC networks, this paper firstly introduces 1-layer RSMA into multi-cell VLC networks by considering the Lambertian radiation model of indoor visible-light channels. Afterwards, we develop a linear precoding containing 1-layer RSMA-VLC to achieve spectral efficiency having constrained the non-linear effect of a light-emitting diode (LED). Subsequently, the transmitted power allocation is constrained by the optical signal power. Finally, we perform a comparison between 1-layer RSMA and NOMA based on multi-cell VLC networks. Simulation results show the effectiveness of our proposal in system spectral efficiency and VLC constraints. Furthermore, key features guaranteeing the merits of 1-layer RSMA are analysed with respect to the number of users, user locations, and lighting deployment.

Original languageEnglish
Title of host publication2020 IEEE International Conference on Communications Workshops, ICC Workshops 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728174402
DOIs
Publication statusPublished - 2020 Jun
Externally publishedYes
Event2020 IEEE International Conference on Communications Workshops, ICC Workshops 2020 - Dublin, Ireland
Duration: 2020 Jun 72020 Jun 11

Publication series

Name2020 IEEE International Conference on Communications Workshops, ICC Workshops 2020 - Proceedings

Conference

Conference2020 IEEE International Conference on Communications Workshops, ICC Workshops 2020
CountryIreland
CityDublin
Period20/6/720/6/11

Keywords

  • Lighting deployment
  • Non-orthogonal multiple access
  • Rate-splitting multiple access
  • Spectral efficiency
  • Visible light communication

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Networks and Communications
  • Signal Processing
  • Information Systems and Management
  • Control and Optimization

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