Presentation 2015-04-17
A Study on Coordinated Beamforming for 5G Ultra High-Density Small Cells and its Indoor Experiment
Takaharu Kobayashi, Toshirou Sawamoto, Takashi Seyama, Takashi Dateki, Hiroyuki Seki, Kazunari Kobayashi, Morihiko Minowa, Satoshi Suyama, Yukihiko Okumura,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In fifth generation mobile communication systems (5G), enhancement of areal capacity by increasing cell density is expected. However, areal capacity does not increase linearly with increasing cell density due to high inter-cell interference. In this paper, we focus on beamforming and coordinated multi-point transmission (CoMP) as interference mitigation techniques and investigate areal throughput according to cell density via system level simulation. We confirm that areal throughput can linearly increase along with cell density with coordinated beamforming (CB). In addition, we show preliminary results in indoor experiments to verify the effect of beamforming and CB.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) 5G / Ultra high-density small cells / Beamforming / Coordinated multi-point (CoMP)
Paper # RCS2015-18
Date of Issue 2015-04-09 (RCS)

Conference Information
Committee RCS
Conference Date 2015/4/16(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Yufuin, Yufugoukan
Topics (in Japanese) (See Japanese page)
Topics (in English) Radio Access Technologies, etc.
Chair Makoto Taromaru(Fukuoka Univ.)
Vice Chair Hidekazu Murata(Kyoto Univ.) / Eiji Okamoto(Nagoya Inst. of Tech.)
Secretary Hidekazu Murata(Mitsubishi Electric) / Eiji Okamoto(NTT DoCoMo)
Assistant Jun Mashino(NTT) / Manabu Mikami(Softbank Mobile) / Toshiaki Yamamoto(KDDI R&D Labs.) / Takamichi Inoue(NEC) / Tetsuya Yamamoto(Panasonic) / Koji Ishibashi(Univ. of Electro-Comm.)

Paper Information
Registration To Technical Committee on Radio Communication Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study on Coordinated Beamforming for 5G Ultra High-Density Small Cells and its Indoor Experiment
Sub Title (in English)
Keyword(1) 5G
Keyword(2) Ultra high-density small cells
Keyword(3) Beamforming
Keyword(4) Coordinated multi-point (CoMP)
1st Author's Name Takaharu Kobayashi
1st Author's Affiliation Fujitsu laboratories ltd.(Fujitsu Labs.)
2nd Author's Name Toshirou Sawamoto
2nd Author's Affiliation Fujitsu laboratories ltd.(Fujitsu Labs.)
3rd Author's Name Takashi Seyama
3rd Author's Affiliation Fujitsu laboratories ltd.(Fujitsu Labs.)
4th Author's Name Takashi Dateki
4th Author's Affiliation Fujitsu laboratories ltd.(Fujitsu Labs.)
5th Author's Name Hiroyuki Seki
5th Author's Affiliation Fujitsu laboratories ltd.(Fujitsu Labs.)
6th Author's Name Kazunari Kobayashi
6th Author's Affiliation Fujitsu Limited.(Fujitsu)
7th Author's Name Morihiko Minowa
7th Author's Affiliation Fujitsu Limited.(Fujitsu)
8th Author's Name Satoshi Suyama
8th Author's Affiliation NTT DOCOMO, INC.(NTT DOCOMO)
9th Author's Name Yukihiko Okumura
9th Author's Affiliation NTT DOCOMO, INC.(NTT DOCOMO)
Date 2015-04-17
Paper # RCS2015-18
Volume (vol) vol.115
Number (no) RCS-2
Page pp.pp.95-100(RCS),
#Pages 6
Date of Issue 2015-04-09 (RCS)