IEICE TRANSACTIONS on Fundamentals
Multi-Cell Interference Mitigation for MIMO Non-Orthogonal Multiple Access Systems
Summary :
This letter proposes a downlink multiple-input multiple-output (MIMO) non-orthogonal multiple access technique that mitigates multi-cell interference (MCI) at cell-edge users, regardless of the number of interfering cells, thereby improving the spectral efficiency. This technique employs specific receive beamforming vectors at the cell-edge users in clusters to minimize the MCI. Based on the receive beamforming vectors adopted by the cell-edge users, the transmit beamforming vectors for a base station (BS) and the receive beamforming vectors for cell-center users are designed to eliminate the inter-cluster interference and maximize the spectral efficiency. As each user can directly obtain its own receive beamforming vector, this technique does not require channel feedback from the users to a BS to design the receive beamforming vectors, thereby reducing the system overhead. We also derive the upper bound of the average sum rate achievable using the proposed technique. Finally, we demonstrate through simulations that the proposed technique achieves a better sum rate performance than the existing schemes and that the derived upper bound is valid.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E104-A No.5 pp.838-843
- Publication Date
- 2021/05/01
- Publicized
- 2020/11/16
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.2020EAL2092
- Type of Manuscript
- LETTER
- Category
- Communication Theory and Signals
Authors
Changyong SHIN
Sun Moon University
Jiho HAN
Sun Moon University
Keyword
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Changyong SHIN, Jiho HAN, "Multi-Cell Interference Mitigation for MIMO Non-Orthogonal Multiple Access Systems" in IEICE TRANSACTIONS on Fundamentals,
vol. E104-A, no. 5, pp. 838-843, May 2021, doi: 10.1587/transfun.2020EAL2092.
Abstract: This letter proposes a downlink multiple-input multiple-output (MIMO) non-orthogonal multiple access technique that mitigates multi-cell interference (MCI) at cell-edge users, regardless of the number of interfering cells, thereby improving the spectral efficiency. This technique employs specific receive beamforming vectors at the cell-edge users in clusters to minimize the MCI. Based on the receive beamforming vectors adopted by the cell-edge users, the transmit beamforming vectors for a base station (BS) and the receive beamforming vectors for cell-center users are designed to eliminate the inter-cluster interference and maximize the spectral efficiency. As each user can directly obtain its own receive beamforming vector, this technique does not require channel feedback from the users to a BS to design the receive beamforming vectors, thereby reducing the system overhead. We also derive the upper bound of the average sum rate achievable using the proposed technique. Finally, we demonstrate through simulations that the proposed technique achieves a better sum rate performance than the existing schemes and that the derived upper bound is valid.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.2020EAL2092/_p
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@ARTICLE{e104-a_5_838,
author={Changyong SHIN, Jiho HAN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Multi-Cell Interference Mitigation for MIMO Non-Orthogonal Multiple Access Systems},
year={2021},
volume={E104-A},
number={5},
pages={838-843},
abstract={This letter proposes a downlink multiple-input multiple-output (MIMO) non-orthogonal multiple access technique that mitigates multi-cell interference (MCI) at cell-edge users, regardless of the number of interfering cells, thereby improving the spectral efficiency. This technique employs specific receive beamforming vectors at the cell-edge users in clusters to minimize the MCI. Based on the receive beamforming vectors adopted by the cell-edge users, the transmit beamforming vectors for a base station (BS) and the receive beamforming vectors for cell-center users are designed to eliminate the inter-cluster interference and maximize the spectral efficiency. As each user can directly obtain its own receive beamforming vector, this technique does not require channel feedback from the users to a BS to design the receive beamforming vectors, thereby reducing the system overhead. We also derive the upper bound of the average sum rate achievable using the proposed technique. Finally, we demonstrate through simulations that the proposed technique achieves a better sum rate performance than the existing schemes and that the derived upper bound is valid.},
keywords={},
doi={10.1587/transfun.2020EAL2092},
ISSN={1745-1337},
month={May},}
Copy
TY - JOUR
TI - Multi-Cell Interference Mitigation for MIMO Non-Orthogonal Multiple Access Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 838
EP - 843
AU - Changyong SHIN
AU - Jiho HAN
PY - 2021
DO - 10.1587/transfun.2020EAL2092
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E104-A
IS - 5
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - May 2021
AB - This letter proposes a downlink multiple-input multiple-output (MIMO) non-orthogonal multiple access technique that mitigates multi-cell interference (MCI) at cell-edge users, regardless of the number of interfering cells, thereby improving the spectral efficiency. This technique employs specific receive beamforming vectors at the cell-edge users in clusters to minimize the MCI. Based on the receive beamforming vectors adopted by the cell-edge users, the transmit beamforming vectors for a base station (BS) and the receive beamforming vectors for cell-center users are designed to eliminate the inter-cluster interference and maximize the spectral efficiency. As each user can directly obtain its own receive beamforming vector, this technique does not require channel feedback from the users to a BS to design the receive beamforming vectors, thereby reducing the system overhead. We also derive the upper bound of the average sum rate achievable using the proposed technique. Finally, we demonstrate through simulations that the proposed technique achieves a better sum rate performance than the existing schemes and that the derived upper bound is valid.
ER -
English
