Deep Reinforcement Learning-based Power Allocation for Downlink RSMA System

  • Hoang Thi Huong Giang
  • , Pham Duy Thanh
  • , Haneul Ko
  • , Sangheon Pack*
  • *Corresponding author for this work

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

    10 Citations (Scopus)

    Abstract

    In this paper, we study the maximum sum rate for a downlink rate splitting multiple access (RSMA) system in long run. In the considered model, the RSMA technique is utilized at a powered base station (BS), where the data from the single BS is divided into two sub-data with different transmit power and receivers decode their received data using a successive decoding technique. To maximize the sum rate of the system, the optimization problem is first reformulated as a Markov decision process framework. Eventually, a deep reinforcement learning algorithm is applied to obtain the optimal solution and deal with the stochastic properties of the network environment. Simulation results show that the RSMA outperforms non-orthogonal multiple access (NOMA) and orthogonal frequency-division multiple access (OFDMA) in terms of system sum rate.

    Original languageEnglish
    Title of host publicationICTC 2022 - 13th International Conference on Information and Communication Technology Convergence
    Subtitle of host publicationAccelerating Digital Transformation with ICT Innovation
    PublisherIEEE Computer Society
    Pages775-777
    Number of pages3
    ISBN (Electronic)9781665499392
    DOIs
    Publication statusPublished - 2022
    Event13th International Conference on Information and Communication Technology Convergence, ICTC 2022 - Jeju Island, Korea, Republic of
    Duration: 2022 Oct 192022 Oct 21

    Publication series

    NameInternational Conference on ICT Convergence
    Volume2022-October
    ISSN (Print)2162-1233
    ISSN (Electronic)2162-1241

    Conference

    Conference13th International Conference on Information and Communication Technology Convergence, ICTC 2022
    Country/TerritoryKorea, Republic of
    CityJeju Island
    Period22/10/1922/10/21

    Bibliographical note

    Funding Information:
    This work was supported by National Research Foundation (NRF) of Korea Grant funded by the Korean Government (MSIT) (No. 2021R1A4A3022102 and 2020R1A2C3006786).

    Publisher Copyright:
    © 2022 IEEE.

    Keywords

    • deep reinforcement learning
    • Power allocation
    • RSMA

    ASJC Scopus subject areas

    • Information Systems
    • Computer Networks and Communications

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