Presentation 2020-05-21
A Study on Cluster-wise User-antenna Association in 5G Advanced Ultra-dense RAN
Sijie Xia, Chang Ge, Qiang Chen, Fumiyuki Adachi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Ultra-dense radio access network (RAN) consisting a large number of distributed antennas and user terminals is able to improve the capacity and coverage while saving transmission power in the 5G advanced systems. In order to alleviate computational complexity problem for large-scale multi-user multi-input multi-output (MU-MIMO) signal processing, user or antenna-based clustering is promising, in which a large-scale MU-MIMO is decomposed into many cluster-wise small-scale MU-MIMO. In each cluster, zero-forcing (ZF) precoding is utilized to eliminate inter-user interference (IUI). For the cluster-wise MU-MIMO, user-antenna association has a great impact on the link capacity. Previously, we proposed a distance-based user-antenna association method, but it has some flaws. In this paper, we propose other two methods to improve it. We adopt the well-known K-means clustering method. Two proposed methods are evaluated by achievable link capacity through computer simulation and are compared by heatmap in detail.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) 5G advanced systemsCluster-wise RANMU-MIMOZFK-MeansUser-antenna association
Paper # RCS2020-11
Date of Issue 2020-05-14 (RCS)

Conference Information
Committee IN / RCS
Conference Date 2020/5/21(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Keio University
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 Takuji Kishida(NTT-AT) / Tomoaki Otsuki(Keio Univ.)
Vice Chair Kenji Ishida(Hiroshima City Univ.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.)
Secretary Kenji Ishida(NTT Communications) / Satoshi Suyama(NTT) / Fumiaki Maehara(Hiroshima City Univ.) / Toshihiko Nishimura(KDDI Research)
Assistant / Kazushi Muraoka(NEC) / Shinsuke Ibi(Doshisha Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric)

Paper Information
Registration To Technical Committee on Information Networks / Technical Committee on Radio Communication Systems
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study on Cluster-wise User-antenna Association in 5G Advanced Ultra-dense RAN
Sub Title (in English)
Keyword(1) 5G advanced systemsCluster-wise RANMU-MIMOZFK-MeansUser-antenna association
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 2020-05-21
Paper # RCS2020-11
Volume (vol) vol.120
Number (no) RCS-29
Page pp.pp.7-12(RCS),
#Pages 6
Date of Issue 2020-05-14 (RCS)