Experimental Study of Large-Scale Coordinated Multi-User MIMO for 5G Ultra High-Density Distributed Antenna Systems
Summary :
Fifth-generation mobile communication systems (5G) must offer significantly higher system capacity than 4G in order to accommodate the rapidly increasing mobile data traffic. Cell densification has been considered an effective way to increase system capacity. Unfortunately, each user equipment (UE) will be in line-of-sight to many more transmission points (TPs) and the resulting inter-cell interference will degrade system capacity. We propose large-scale coordinated multi-user multiple-input multiple-output (LSC-MU-MIMO), which combines MU-MIMO with joint transmission from all the TPs connected to a centralized baseband unit. We previously investigated the downlink performance of LSC-MU-MIMO by computer simulation and found that it can significantly reduce inter-TP interference and improve the system capacity of high-density small cells. In this paper, we investigate the throughput of LSC-MU-MIMO through an indoor trial where the number of coordinated TPs is up to sixteen by using an experimental system that can execute real-time channel estimation based on TDD reciprocity and real-time data transmission. To clarify the improvement in the system capacity of LSC-MU-MIMO, we compared the throughput measured in the same experimental area with and without coordinated transmission in 4-TP, 8-TP, and 16-TP configurations. The results show that with coordinated transmission the system capacity is almost directly proportional to the number of TPs.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E102-B No.8 pp.1390-1400
- Publication Date
- 2019/08/01
- Publicized
- 2019/02/20
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2018TTP0012
- Type of Manuscript
- Special Section PAPER (Special Section on Technology Trials and Proof-of-Concept Activities for 5G and Beyond)
- Category
Authors
Takaharu KOBAYASHI
FUJITSU LIMITED
Masafumi TSUTSUI
FUJITSU LIMITED
Takashi DATEKI
FUJITSU LIMITED
Hiroyuki SEKI
FUJITSU LIMITED
Morihiko MINOWA
FUJITSU LIMITED
Chiyoshi AKIYAMA
FUJITSU LABORATORIES LTD.
Tatsuki OKUYAMA
NTT DOCOMO, INC.
Jun MASHINO
NTT DOCOMO, INC.
Satoshi SUYAMA
NTT DOCOMO, INC.
Yukihiko OKUMURA
NTT DOCOMO, INC.
Keyword
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Takaharu KOBAYASHI, Masafumi TSUTSUI, Takashi DATEKI, Hiroyuki SEKI, Morihiko MINOWA, Chiyoshi AKIYAMA, Tatsuki OKUYAMA, Jun MASHINO, Satoshi SUYAMA, Yukihiko OKUMURA, "Experimental Study of Large-Scale Coordinated Multi-User MIMO for 5G Ultra High-Density Distributed Antenna Systems" in IEICE TRANSACTIONS on Communications,
vol. E102-B, no. 8, pp. 1390-1400, August 2019, doi: 10.1587/transcom.2018TTP0012.
Abstract: Fifth-generation mobile communication systems (5G) must offer significantly higher system capacity than 4G in order to accommodate the rapidly increasing mobile data traffic. Cell densification has been considered an effective way to increase system capacity. Unfortunately, each user equipment (UE) will be in line-of-sight to many more transmission points (TPs) and the resulting inter-cell interference will degrade system capacity. We propose large-scale coordinated multi-user multiple-input multiple-output (LSC-MU-MIMO), which combines MU-MIMO with joint transmission from all the TPs connected to a centralized baseband unit. We previously investigated the downlink performance of LSC-MU-MIMO by computer simulation and found that it can significantly reduce inter-TP interference and improve the system capacity of high-density small cells. In this paper, we investigate the throughput of LSC-MU-MIMO through an indoor trial where the number of coordinated TPs is up to sixteen by using an experimental system that can execute real-time channel estimation based on TDD reciprocity and real-time data transmission. To clarify the improvement in the system capacity of LSC-MU-MIMO, we compared the throughput measured in the same experimental area with and without coordinated transmission in 4-TP, 8-TP, and 16-TP configurations. The results show that with coordinated transmission the system capacity is almost directly proportional to the number of TPs.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018TTP0012/_p
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@ARTICLE{e102-b_8_1390,
author={Takaharu KOBAYASHI, Masafumi TSUTSUI, Takashi DATEKI, Hiroyuki SEKI, Morihiko MINOWA, Chiyoshi AKIYAMA, Tatsuki OKUYAMA, Jun MASHINO, Satoshi SUYAMA, Yukihiko OKUMURA, },
journal={IEICE TRANSACTIONS on Communications},
title={Experimental Study of Large-Scale Coordinated Multi-User MIMO for 5G Ultra High-Density Distributed Antenna Systems},
year={2019},
volume={E102-B},
number={8},
pages={1390-1400},
abstract={Fifth-generation mobile communication systems (5G) must offer significantly higher system capacity than 4G in order to accommodate the rapidly increasing mobile data traffic. Cell densification has been considered an effective way to increase system capacity. Unfortunately, each user equipment (UE) will be in line-of-sight to many more transmission points (TPs) and the resulting inter-cell interference will degrade system capacity. We propose large-scale coordinated multi-user multiple-input multiple-output (LSC-MU-MIMO), which combines MU-MIMO with joint transmission from all the TPs connected to a centralized baseband unit. We previously investigated the downlink performance of LSC-MU-MIMO by computer simulation and found that it can significantly reduce inter-TP interference and improve the system capacity of high-density small cells. In this paper, we investigate the throughput of LSC-MU-MIMO through an indoor trial where the number of coordinated TPs is up to sixteen by using an experimental system that can execute real-time channel estimation based on TDD reciprocity and real-time data transmission. To clarify the improvement in the system capacity of LSC-MU-MIMO, we compared the throughput measured in the same experimental area with and without coordinated transmission in 4-TP, 8-TP, and 16-TP configurations. The results show that with coordinated transmission the system capacity is almost directly proportional to the number of TPs.},
keywords={},
doi={10.1587/transcom.2018TTP0012},
ISSN={1745-1345},
month={August},}
Copy
TY - JOUR
TI - Experimental Study of Large-Scale Coordinated Multi-User MIMO for 5G Ultra High-Density Distributed Antenna Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 1390
EP - 1400
AU - Takaharu KOBAYASHI
AU - Masafumi TSUTSUI
AU - Takashi DATEKI
AU - Hiroyuki SEKI
AU - Morihiko MINOWA
AU - Chiyoshi AKIYAMA
AU - Tatsuki OKUYAMA
AU - Jun MASHINO
AU - Satoshi SUYAMA
AU - Yukihiko OKUMURA
PY - 2019
DO - 10.1587/transcom.2018TTP0012
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2019
AB - Fifth-generation mobile communication systems (5G) must offer significantly higher system capacity than 4G in order to accommodate the rapidly increasing mobile data traffic. Cell densification has been considered an effective way to increase system capacity. Unfortunately, each user equipment (UE) will be in line-of-sight to many more transmission points (TPs) and the resulting inter-cell interference will degrade system capacity. We propose large-scale coordinated multi-user multiple-input multiple-output (LSC-MU-MIMO), which combines MU-MIMO with joint transmission from all the TPs connected to a centralized baseband unit. We previously investigated the downlink performance of LSC-MU-MIMO by computer simulation and found that it can significantly reduce inter-TP interference and improve the system capacity of high-density small cells. In this paper, we investigate the throughput of LSC-MU-MIMO through an indoor trial where the number of coordinated TPs is up to sixteen by using an experimental system that can execute real-time channel estimation based on TDD reciprocity and real-time data transmission. To clarify the improvement in the system capacity of LSC-MU-MIMO, we compared the throughput measured in the same experimental area with and without coordinated transmission in 4-TP, 8-TP, and 16-TP configurations. The results show that with coordinated transmission the system capacity is almost directly proportional to the number of TPs.
ER -
English
