IEICE TRANSACTIONS on Communications
Experimental Verification of Null-Space Expansion for Multiuser Massive MIMO via Channel State Information Measurement
Summary :
This paper presents experimental results of our proposed null-space expansion scheme for multiuser massive multiple-input multiple-output (MIMO) in time varying channels. Multiuser MIMO transmission with the proposed scheme can suppress the inter-user interference (IUI) caused by outdated channel state information (CSI). The excess degrees of freedom (DoFs) of massive MIMO is exploited to perform additional null-steering using past estimated CSI. The signal-to-interference power ratio (SIR) and spectral efficiency performances achieved by the proposed scheme that uses measured CSI is experimentally evaluated. It is confirmed that the proposed scheme shows performance superior to the conventional channel prediction scheme. In addition, IUI can be stably suppressed even in high mobility environments by further increasing the null-space dimension.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E101-B No.3 pp.877-884
- Publication Date
- 2018/03/01
- Publicized
- 2017/08/28
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2017EBP3117
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Tatsuhiko IWAKUNI
NTT Access Network Service Systems Laboratories
Kazuki MARUTA
NTT Access Network Service Systems Laboratories
Atsushi OHTA
NTT Access Network Service Systems Laboratories
Yushi SHIRATO
NTT Access Network Service Systems Laboratories
Masataka IIZUKA
NTT Access Network Service Systems Laboratories
Keyword
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Tatsuhiko IWAKUNI, Kazuki MARUTA, Atsushi OHTA, Yushi SHIRATO, Masataka IIZUKA, "Experimental Verification of Null-Space Expansion for Multiuser Massive MIMO via Channel State Information Measurement" in IEICE TRANSACTIONS on Communications,
vol. E101-B, no. 3, pp. 877-884, March 2018, doi: 10.1587/transcom.2017EBP3117.
Abstract: This paper presents experimental results of our proposed null-space expansion scheme for multiuser massive multiple-input multiple-output (MIMO) in time varying channels. Multiuser MIMO transmission with the proposed scheme can suppress the inter-user interference (IUI) caused by outdated channel state information (CSI). The excess degrees of freedom (DoFs) of massive MIMO is exploited to perform additional null-steering using past estimated CSI. The signal-to-interference power ratio (SIR) and spectral efficiency performances achieved by the proposed scheme that uses measured CSI is experimentally evaluated. It is confirmed that the proposed scheme shows performance superior to the conventional channel prediction scheme. In addition, IUI can be stably suppressed even in high mobility environments by further increasing the null-space dimension.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2017EBP3117/_p
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@ARTICLE{e101-b_3_877,
author={Tatsuhiko IWAKUNI, Kazuki MARUTA, Atsushi OHTA, Yushi SHIRATO, Masataka IIZUKA, },
journal={IEICE TRANSACTIONS on Communications},
title={Experimental Verification of Null-Space Expansion for Multiuser Massive MIMO via Channel State Information Measurement},
year={2018},
volume={E101-B},
number={3},
pages={877-884},
abstract={This paper presents experimental results of our proposed null-space expansion scheme for multiuser massive multiple-input multiple-output (MIMO) in time varying channels. Multiuser MIMO transmission with the proposed scheme can suppress the inter-user interference (IUI) caused by outdated channel state information (CSI). The excess degrees of freedom (DoFs) of massive MIMO is exploited to perform additional null-steering using past estimated CSI. The signal-to-interference power ratio (SIR) and spectral efficiency performances achieved by the proposed scheme that uses measured CSI is experimentally evaluated. It is confirmed that the proposed scheme shows performance superior to the conventional channel prediction scheme. In addition, IUI can be stably suppressed even in high mobility environments by further increasing the null-space dimension.},
keywords={},
doi={10.1587/transcom.2017EBP3117},
ISSN={1745-1345},
month={March},}
Copy
TY - JOUR
TI - Experimental Verification of Null-Space Expansion for Multiuser Massive MIMO via Channel State Information Measurement
T2 - IEICE TRANSACTIONS on Communications
SP - 877
EP - 884
AU - Tatsuhiko IWAKUNI
AU - Kazuki MARUTA
AU - Atsushi OHTA
AU - Yushi SHIRATO
AU - Masataka IIZUKA
PY - 2018
DO - 10.1587/transcom.2017EBP3117
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2018
AB - This paper presents experimental results of our proposed null-space expansion scheme for multiuser massive multiple-input multiple-output (MIMO) in time varying channels. Multiuser MIMO transmission with the proposed scheme can suppress the inter-user interference (IUI) caused by outdated channel state information (CSI). The excess degrees of freedom (DoFs) of massive MIMO is exploited to perform additional null-steering using past estimated CSI. The signal-to-interference power ratio (SIR) and spectral efficiency performances achieved by the proposed scheme that uses measured CSI is experimentally evaluated. It is confirmed that the proposed scheme shows performance superior to the conventional channel prediction scheme. In addition, IUI can be stably suppressed even in high mobility environments by further increasing the null-space dimension.
ER -
English
