SIJIE XIA

Last Updated :2026/02/03

Affiliations, Positions
Research Institute for Semiconductor Engineering, Assistant Professor (Special Appointment)
E-mail
xiasijiehiroshima-u.ac.jp
Self-introduction
To achieve high capacity and scalability in mobile communication systems, research and development are being conducted on distributed massive MIMO (Massive Multiple-Input Multiple-Output) transmission methods and resource allocation techniques.

Basic Information

Major Professional Backgrounds

  • 2024/10, Hiroshima University, Research Institute for Semiconductor Engineering, Assistant Prof. (Special Appointment)

Educational Backgrounds

  • Tohoku University, Graduate School of Engineering, Department of Communication Engineering, Japan, 2019, 2021
  • Tohoku University, Graduate School of Engineering, Department of Communication Engineering, Japan, 2021, 2024

Academic Degrees

  • TOHOKU UNIVERSITY
  • TOHOKU UNIVERSITY

Research Fields

  • Engineering;Electrical and electronic engineering;Communication / Network engineering

Research Keywords

  • Distributed Massive MIMO, Beamforming, Resouce Allocation

Affiliated Academic Societies

  • IEEE
  • IEICE

Research Activities

Academic Papers

  1. 2-step Graph Coloring Algorithm for Cluster-wise Distributed MU-MIMO in Ultra-dense RAN, International Symposium on Wireless Personal Multimedia Communications Wpmc, 2020-October, 20201019
  2. A study on user-antenna cluster formation for cluster-wise MU-MIMO, International Symposium on Wireless Personal Multimedia Communications Wpmc, 2020-October, 20201019
  3. An improved method in graph coloring algorithm for interference coordination in cluster-wise ultra-dense RAN, 2020 International Symposium on Antennas and Propagation Isap 2020, 293-294, 20210125
  4. Optimal Power Allocation for Cluster-Wise Distributed MU-MIMO System, IEEE Vehicular Technology Conference, 2021-September, 20210101
  5. Graph Coloring-based Interference Coordination for Ultra-Dense Cellular Network with Distributed MU-MIMO, IEEE Vehicular Technology Conference, 2021-September, 20210101
  6. Reinforcement Learning-based Interference Coordination for Distributed MU-MIMO, International Symposium on Wireless Personal Multimedia Communications Wpmc, 2021-December, 20210101
  7. Cellular Structuring and Clustering for Distributed Antenna Systems, International Symposium on Wireless Personal Multimedia Communications Wpmc, 2021-December, 20210101
  8. Capacity-Fairness Tradeoff for Optimal Power Allocation in Cluster-wise MU-MIMO System, Apwcs 2022 2022 IEEE Vts Asia Pacific Wireless Communications Symposium, 16-20, 20220101
  9. 2-Layer Interference Coordination Framework Based on Graph Coloring Algorithm for a Cellular System with Distributed MU-MIMO, IEEE Transactions on Vehicular Technology, 72(3), 3557-3568, 20230301
  10. A Study on Cluster-Centric Cell-Free Massive MIMO System, Apcc 2022 27th Asia Pacific Conference on Communications Creating Innovative Communication Technologies for Post Pandemic Era, 247-252, 20220101
  11. On Design Concept of Cellular Distributed MU-MIMO for Ultra-dense RAN, Apcc 2022 27th Asia Pacific Conference on Communications Creating Innovative Communication Technologies for Post Pandemic Era, 266-271, 20220101
  12. Evaluation of Uplink Capacity of User-Cluster-Centric Cell-Free massive MIMO, IEEE Vehicular Technology Conference, 2022-September, 20220101
  13. Learning Based on Graph: A Joint Interference Coordination for Cluster-Wise Distributed MU-MIMO, IEEE Communications Letters, 27(3), 871-875, 20230301
  14. Uplink Postcoding in User-Cluster-Centric Cell-Free Massive MIMO, IEICE Transactions on Communications, E106-B(9), 748-757, 20230901
  15. Adaptive Interference Suppressing Multi-User ZF in Cluster-Centric Cell-Free Massive MIMO Systems, IEEE Communications Letters, 28(6), 1422-1426, 20240601
  16. Graph Coloring-Based Pilot Assignment for User-Cluster-Centric Cell-Free Massive MIMO Systems, 2024 IEEE Vts Asia Pacific Wireless Communications Symposium Apwcs 2024, 20240101

Social Activities

History as Peer Reviews of Academic Papers

  1. 2025, IEICE TRANSACTIONS on Communications