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Q-Learning Based Optimum Relay Selection for a SWIPT-Enabled Wireless System

  • Haojie Wang*
  • , Bo Li
  • *Corresponding author for this work
  • Harbin Institute of Technology Weihai

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

Abstract

This paper exploits q-learning to solve the optimization of relay resource allocation in a SWIPT system in order to maximize the overall source nodes communication rate. The traditional method based on greedy strategy search can find the current optimal relay. However, this method does not adapt to the changes of the dynamic network and is easy to fall into the local optimum. In q-learning, agents are driven to intelligently switch strategies to obtain rewards for complex dynamic environments. A multi-source node competition relay environment is created. Our proposed scheme treats the optimised objective as an environmental reward and models the process of relay selection as a Markovian decision process. After experimental simulations and comparisons, the proposed scheme improves the overall throughput and resource utilisation in an environment where multiple source nodes compete with each other, and performs significantly better than the greedy strategy.

Original languageEnglish
Title of host publicationArtificial Intelligence for Communications and Networks - 3rd EAI International Conference, AICON 2021, Proceedings
EditorsXianbin Wang, Kai-Kit Wong, Shanji Chen, Mingqian Liu
PublisherSpringer Science and Business Media Deutschland GmbH
Pages100-107
Number of pages8
ISBN (Print)9783030901950
DOIs
StatePublished - 2021
Externally publishedYes
Event3rd EAI International Conference on Artificial Intelligence for Communications and Networks, AICON 2021 - Virtual, Online
Duration: 23 Oct 202124 Oct 2021

Publication series

NameLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Volume396 LNICST
ISSN (Print)1867-8211
ISSN (Electronic)1867-822X

Conference

Conference3rd EAI International Conference on Artificial Intelligence for Communications and Networks, AICON 2021
CityVirtual, Online
Period23/10/2124/10/21

Keywords

  • Reinforcement learning
  • Relay selection
  • Simultaneous wireless information and power transfer

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