Three-Way Massive MIMO Relaying with Successive Cancelation Decoding

  • Chung Duc HoEmail author
  • Hien Quoc Ngo
  • Michail Matthaiou
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 221)


In this paper, we propose a novel transmission scheme for a three-way massive multiple-input multiple-output (MIMO) relay network where three users exchange their data with the help of a decode-and-forward relay station equipped with a very large antenna array. Our proposed scheme needs only two time-slots for the information exchange. More precisely, the three users first send their symbols to the relay. Then, the relay uses the maximum-ratio combining technique to decode all transmitted symbols and simultaneously transmits these symbols to all three users. Each user applies successive cancelation decoding to decode symbols transmitted from other users. We study the sum spectral efficiency of our proposed transmission protocol. We show that the sum spectral efficiency of our proposed scheme increases noticeably compared to the one of the conventional scheme where three time-slots are required to exchange data among the three users, without increasing the system complexity.


Decode-and-forward Maximum-ratio combining Multi-way relay massive MIMO Successive cancelation decoding 



This work was supported by project no. 3811/QD-UBND, Binh Duong government, Vietnam. The work of H. Q. Ngo was supported by the Swedish Research Council (VR) and ELLIIT.


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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2018

Authors and Affiliations

  • Chung Duc Ho
    • 1
    Email author
  • Hien Quoc Ngo
    • 1
    • 2
  • Michail Matthaiou
    • 1
  1. 1.Institute of Electronics, Communications and Information Technology (ECIT)Queen’s University BelfastBelfastUK
  2. 2.Department of Electrical Engineering (ISY)Linköping UniversityLinköpingSweden

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