| Presentation | 2020-03-04 K-Means Clustering and Multi-user Zero-Forcing for Ultra-dense RAN in 5G Advanced Systems Sijie Xia, Chang Ge, Qiang Chen, Fumiyuki Adachi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Ultra-dense radio access network (RAN) consisting of a large number of distributed antennas is considered to be able to improve both the coverage and the capacity in 5G advanced systems. The computational complexity of multi-user multi-input multi-output (MU-MIMO) is very high when accommodating a large number of users. Using user or antenna-based clustering, the original large-scale MIMO channel matrix is decomposed into small-scale MIMO channel matrices. Then, small-scale multi-user MIMO is performed in each cluster. When allocating the same frequency resource to all clusters, severe inter-cluster interference (ICI) is produced. To reduce the ICI, antenna-user association is important. In this paper, we propose two clustering methods using K-Means algorithm and an antenna-user association method based on the clustering result. Assuming Zero-Forcing (ZF) based MU-MIMO, we evaluate by computer simulation the achievable link capacity and the required computational complexity. We discuss the impacts of the number of clusters and various propagation environments (e.g. pathloss only, pathloss+shadowing, and pathloss+shadowing+fading) on the link capacity and also a trade-off between link capacity and computational complexity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 5G advanced systemsRANMU-MIMOZFK-Means clustering |
| Paper # | RCS2019-324 |
| Date of Issue | 2020-02-26 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2020/3/4(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Tomoaki Otsuki(Keio Univ.) / Masayuki Ariyoshi(NEC) / Satoshi Denno(Okayama Univ.) |
| Vice Chair | Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Suguru Kameda(Tohoku Univ.) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Keiichi Mizutani(Kyoto Univ.) |
| Secretary | Satoshi Suyama(NTT) / Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(ATR) / Suguru Kameda(Univ. of Electro-Comm.) / Osamu Takyu(Mie Univ.) / Kentaro Ishidu(Tokyo Inst. of Tech.) / Keiichi Mizutani(Anritsu) |
| Assistant | Kazushi Muraoka(NEC) / Shinsuke Ibi(Doshisha Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Mai Ohta(Fukuoka Univ.) / Teppei Oyama(Fujitsu Lab.) / Kentaro Kobayashi(Nagoya Univ.) / Masaaki Fuse(Anritsu) / Tomoki Murakami(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | K-Means Clustering and Multi-user Zero-Forcing for Ultra-dense RAN in 5G Advanced Systems |
| Sub Title (in English) | |
| Keyword(1) | 5G advanced systemsRANMU-MIMOZFK-Means clustering |
| 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 | Qiang Chen |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 4th Author's Name | Fumiyuki Adachi |
| 4th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2020-03-04 |
| Paper # | RCS2019-324 |
| Volume (vol) | vol.119 |
| Number (no) | RCS-448 |
| Page | pp.pp.25-30(RCS), |
| #Pages | 6 |
| Date of Issue | 2020-02-26 (RCS) |