| Presentation | 2022-05-26 Incorporation of MU-MIMO Technology into User-centric Cell-Free mMIMO System Sijie Xia, Chang Ge, Ryo Takahashi, Qiang Chen, Fumiyuki Adachi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, cell-free massive multiple-input-multiple-output (CF-mMIMO) system has been attracting a great attention. CF-mMIMO system is designed to accommodate a relatively small number of users by using a large number of antennas. From the practical perspective of computational complexity and fronthaul capacity, a user-centric antenna clustering approach is taken, i.e., each user is served by an antenna cluster which is a set of antennas with high channel gain. However, as the number of users increases, the interference tends to degrade the transmission performance. To improve the transmission performance under a densely populated user environment, we propose to incorporate the multi-user MIMO (MU-MIMO) technology into user-centric CF-mMIMO, which is called clusters-centric CF-mMIMO in this paper. In cluster-centric CF-mMIMO, user-clusters are first formed and a set of antennas is associated with each user cluster for performing MU-MIMO communication in parallel. We will show by computer simulation of user capacity that the proposed cluster-centric CF-mMIMO outperforms the user-centric CF-mMIMO under a densely populated user environment. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cell free massive MIMOuser clusteringsignal processing |
| Paper # | RCS2022-14 |
| Date of Issue | 2022-05-19 (RCS) |
| Conference Information | |
| Committee | IN / RCS |
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| Conference Date | 2022/5/26(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Keio University (Hiyoshi Campus) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Ad-Hoc/Sensor Networks/MANET, Mobile Networks, M2M/IoT Communications, Wi-Fi, IEEE802.15(ZigBee) and others |
| Chair | Kenji Ishida(Hiroshima City Univ.) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Kunio Hato(Internet Multifeed) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) |
| Secretary | Kunio Hato(NTT) / Toshihiko Nishimura(Univ. of Nagasaki) / Tomoya Tandai(Nagaoka Univ. of Tech.) / Fumihide Kojima(KDDI Research) |
| Assistant | / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Information Networks / Technical Committee on Radio Communication Systems |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Incorporation of MU-MIMO Technology into User-centric Cell-Free mMIMO System |
| Sub Title (in English) | |
| Keyword(1) | Cell free massive MIMOuser clusteringsignal processing |
| 1st Author's Name | Sijie Xia |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Chang Ge |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 3rd Author's Name | Ryo Takahashi |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 4th Author's Name | Qiang Chen |
| 4th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 5th Author's Name | Fumiyuki Adachi |
| 5th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2022-05-26 |
| Paper # | RCS2022-14 |
| Volume (vol) | vol.122 |
| Number (no) | RCS-49 |
| Page | pp.pp.7-12(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-05-19 (RCS) |