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Research on performance improvement of non-orthogonal multiple access in cooperation with orthogonal multiple access

Research Project

Project/Area Number 19K04381
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionWaseda University

Principal Investigator

Maehara Fumiaki  早稲田大学, 理工学術院, 教授 (80329101)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsNOMA / OMA / リソース割当て / ユーザ要求 / システムスループット
Outline of Research at the Start

本研究課題では,2020年に我が国が世界に先駆けて導入を目指す第5世代移動通信システム(5G)の中核技術である非直交多元接続(NOMA)を取り上げ,ユーザ間のチャネル利得差が小さい場合にその適用効果が減少する問題をNOMAと直交多元接続(OMA)の帯域内同時利用により克服するとともに,今後の無線サービスの多様化を見据え,ユーザの伝搬路情報だけでなく,多様な要求スループットも考慮したリソース割当てを行う方式を提案する.本提案方式により,NOMAのシステム容量の向上が図れるだけでなく,多様なモバイルトラヒックを効率的に収容できることから,5G以降のモバイルネットワークのさらなる高度化が期待できる.

Outline of Final Research Achievements

In this research, we focus on Non-Orthogonal Multiple Access (NOMA), a core technology of the fifth-generation mobile communication system (5G), and propose the hybrid multiple access scheme simultaneously using NOMA and Orthogonal Multiple Access (OMA) within the band in order to overcome the problem of degrading the performance of NOMA in the case of small channel gain difference between users. In addition, in anticipation of future diversification of wireless services, we propose a resource allocation method that considers not only users' propagation path information but also their diverse throughput requirements. Performance evaluation through computer simulations showed that in the multi-cell environment specific to mobile communications, the throughput performance of the proposed method is better than that of the cases using only NOMA or only OMA.

Academic Significance and Societal Importance of the Research Achievements

提案するNOMAとOMAのハイブリッド多元接続方式は,ユーザ間のチャネル利得差の小さい低CNR領域では,OMAを活用し,ユーザ間の高いチャネル利得差が期待できる高CNR領域では,NOMAを活用できることから,チャネル利得差の小さい場合に生じるNOMAのシステム容量劣化の問題を効果的に克服できる.また,5Gで想定される多様な要求スループットに対しても,提案方式の有効性が確認できたことから,5G以降の移動通信ネットワークで求められる多様な通信トラヒックを前提とした無線ネットワークの高度化に貢献できる.

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2024 2023 2022 2021 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Impact of multiple antennas on hybrid multiple access scheme employing NOMA and OMA simultaneously considering user request2022

    • Author(s)
      F. Tanaka, H. Suganuma, and F. Maehara
    • Journal Title

      IEICE Communications Express

      Volume: 11 Issue: 6 Pages: 342-348

    • DOI

      10.1587/comex.2022XBL0039

    • ISSN
      2187-0136
    • Year and Date
      2022-06-01
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 複数送信アンテナを用いたNOMAとOMAの切り替え方式に関する一検討2024

    • Author(s)
      木村悠華, 佐々木希実, 齋藤周平, 菅沼碩文, 前原文明
    • Organizer
      電子情報通信学会総合大会 B-5A-19
    • Related Report
      2023 Annual Research Report
  • [Presentation] Hybrid multiple access scheme employing NOMA and OMA simultaneously under non-uniform user distribution and multiple transmit antennas2023

    • Author(s)
      N. Sasaki, F. Tanaka, S. Saito, H. Suganuma, and F. Maehara
    • Organizer
      2023 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 不均一なユーザ分布における送信ダイバーシチを用いたハイブリッド多元接続方式の特性2023

    • Author(s)
      佐々木希実, 田中風我, 齋藤周平, 菅沼碩文, 前原文明
    • Organizer
      電子情報通信学会技術研究報告 RCS2023-105
    • Related Report
      2023 Annual Research Report
  • [Presentation] 不均一なユーザ分布と送信ダイバーシチを考慮したユーザ要求に基づくハイブリッド多元接続方式に関する一検討2023

    • Author(s)
      佐々木希実,田中風我,齋藤周平,菅沼碩文,前原文明
    • Organizer
      電子情報通信学会総合大会 B-5-61
    • Related Report
      2022 Research-status Report
  • [Presentation] A study on impact of multiple antennas on hybrid multiple access scheme employing NOMA and OMA simultaneously considering user request2022

    • Author(s)
      F. Tanaka, H. Suganuma, and F. Maehara
    • Organizer
      電子情報通信学会 総合大会 B-5-76
    • Related Report
      2021 Research-status Report
  • [Presentation] Beyond 5G無線通信における要素技術間連携の試みとその効果について2022

    • Author(s)
      前原 文明
    • Organizer
      電子情報通信学会 信学技報 RCS2021-262
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Hybrid multiple access scheme using NOMA and OMA simultaneously considering user request2021

    • Author(s)
      F. Tanaka, H. Suganuma, and F. Maehara
    • Organizer
      Proc. 24th International Symposium on Wireless Personal Multimedia Communications (WPMC 2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Deep learning based hybrid multiple access consisting of SCMA and OFDMA using user position information2021

    • Author(s)
      Y. Kumagai, N. Gonda, Y. Shimbo, H. Suganuma, and F. Maehara
    • Organizer
      Proc. 2021 Int. Conf. Artificial Intell. Inf. Commun. (ICAIIC 2021)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Hybrid Multiple Access Using Simultaneously NOMA and OMA2019

    • Author(s)
      H. Suganuma, H. Suenaga, F. Maehara
    • Organizer
      Proc. 2019 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2025-01-30  

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