Bandit-Based Power Control in Full-Duplex Cooperative Relay Networks

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

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Abstract

Full-duplex relaying is an enabling technique of sixth generation (6G) mobile networks, promising tremendous rate and spectral efficiency gains. In order to improve the performance of full-duplex communications, power control is a viable way of avoiding excessive loop interference at the relay. Unfortunately, power control requires channel state information of both source-relay and relay-destination channels, as well as of the loop interference channel, thus resulting in increased overheads. Aiming to offer a low-complexity alternative for power control in full-duplex relay networks, we adopt reward-based learning in the sense of multi-armed bandits. More specifically, we provide bandit-based power control algorithms, relying on acknowledgements/negative-acknowledgements observations by the relay. The proposed algorithms avoid the need for channel state information acquisition and exchange, and can be employed in a distributed manner. Performance evaluation results in terms of outage probability, average throughput and accumulated regret over time highlight an interesting performance-complexity trade-off compared to optimal power control with full channel knowledge and significant performance gains over the cases without power control and random power level selection.

Original languageEnglish
Title of host publicationICC 2021 - IEEE International Conference on Communications, Proceedings
PublisherIEEE
Number of pages6
ISBN (Electronic)9781728171227
DOIs
Publication statusPublished - Jun 2021
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Communications - Online, Montreal, Canada
Duration: 14 Jun 202123 Jun 2021
https://icc2021.ieee-icc.org/

Publication series

NameIEEE International Conference on Communications
ISSN (Print)1550-3607
ISSN (Electronic)1938-1883

Conference

ConferenceIEEE International Conference on Communications
Abbreviated titleICC Workshops
Country/TerritoryCanada
CityMontreal
Period14/06/202123/06/2021
Internet address

Keywords

  • Full-duplex relaying
  • machine learning
  • multi-armed bandits
  • power control

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