Proactive Resource Allocation for Aggregated VLC/RF Networks With Outdated CSI

Dimitrios Bozanis, Nikos G. Evgenidis, Vasilis K. Papanikolaou, Alexis A. Dowhuszko, Sotiris A. Tegos, Panagiotis D. Diamantoulakis, George K. Karagiannidis

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
24 Downloads (Pure)

Abstract

In this paper, the case of an aggregated VLC/RF network is presented, where the users can be served simultaneously by both a visible light communication (VLC) carrier and a radio-frequency (RF) carrier to increase their achievable data rate. The optimal resource allocation in the network is dependent on always having accurate channel state information (CSI), otherwise, in the case of outdated CSI, the system is prone to sub-optimally allocating resources and, due to the limited coverage of VLC, users may also experience outage. A closed-form expression for the coverage probability is presented for a user moving randomly in the cell. Using this, a proactive resource allocation algorithm is proposed that takes into account outdated CSI which can occur due to user movement, and ensures the outage probability is low in the network without diminishing the average achievable data rate of users. Finally, simulation results validate the proposed analysis and showcase the effectiveness of this approach.

Original languageEnglish
Pages (from-to)944-948
Number of pages5
JournalIEEE WIRELESS COMMUNICATIONS LETTERS
Volume13
Issue number4
Early online date11 Jan 2024
DOIs
Publication statusPublished - 1 Apr 2024
MoE publication typeA1 Journal article-refereed

Keywords

  • Optical receivers
  • Optical sensors
  • Optimization
  • Radio frequency
  • Resource management
  • Visible light communication
  • Wireless communication
  • aggregated VLC/RF networks
  • outdated CSI
  • proactive resource allocation
  • Proactive resource allocation

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