講演抄録/キーワード |
講演名 |
2022-10-28 10:15
A Study on Interference Suppression ZF-based MU-MIMO for Cluster-Centric Cell-Free Massive MIMO Systems ○Sijie Xia・Chang Ge・Ryo Takahashi・Qiang Chen・Fumiyuki Adachi(Tohoku Univ.) RCS2022-144 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
Cell-free massive multi-input multi-output (CF-mMIMO), which is recently under extensive study, is considered to be an effective way to provide high-quality services to users by deploying a large number of antennas over a wide area in Beyond 5G systems. However, due to the extremely high computational complexity required for mMIMO, system scalability becomes an important issue for its practical implementation. In our previous study, we proposed a scalable user-cluster-centric (UCC) CF-mMIMO scheme, which employs interference suppression zero-forcing (IS-ZF)-based multi-user MIMO (MU-MIMO) to effectively mitigate the inter-cluster interference. How to identify and select dominant interfering users who give a strong impact on the system capacity is an important issue. In this paper, we will investigate the impact of the number of interfering users considered for the IS-ZF-based MU-MIMO on the system capacity and propose an effective selection method of dominant interfering users. We will show by the computer simulation that the proposed interfering user selection method can approximately reach the upper bound of capacity which is achieved by IS-ZF-based MU-MIMO considering all interfering users. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Cell-free massive MIMO / ZF / interference suppression / user clustering / beyond 5G systems / / / |
文献情報 |
信学技報, vol. 122, no. 235, RCS2022-144, pp. 77-82, 2022年10月. |
資料番号 |
RCS2022-144 |
発行日 |
2022-10-20 (RCS) |
ISSN |
Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
RCS2022-144 |
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