Inter-Terminal Interference Evaluation of Full Duplex MIMO Using Measured Channel

Yuta KASHINO; Masakuni TSUNEZAWA; Naoki HONMA; Kentaro NISHIMORI

doi:10.1587/transcom.2017ISP0025

Inter-Terminal Interference Evaluation of Full Duplex MIMO Using Measured Channel

Yuta KASHINO, Masakuni TSUNEZAWA, Naoki HONMA, Kentaro NISHIMORI

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In-band full-duplex (FD) Multiple-Input and Multiple-Output (MIMO) communication performs uplink and downlink transmission at the same time using the same frequency. In this system, the spectral efficiency is theoretically double that of conventional duplex schemes, such as Time Division Duplex (TDD) and Frequency Division Duplex (FDD). However, this system suffers interference because the uplink and downlink streams coexist within the same channel. Especially at the terminal side, it is quite difficult for the terminal to eliminate the interference signals from other terminals since it has no knowledge about the contents of the interference signals. This paper presents an inter-terminal interference suppression method between the uplink and downlink signals assuming the multi-user environment. This method uses eigen-beamforming at the transmitting terminal to direct the null to the other terminal. Since this beamforming technique reduces the degrees of freedom available, the interference suppression performance and transmitting data-rate have a trade-off relation. This study investigates the system capacity characteristics in multi-user full-duplex MIMO communication using the propagation channel information measured in an actual outdoor experiment and shows that the proposed communication scheme offers higher system capacity than the conventional scheme.

Publication: IEICE TRANSACTIONS on Communications Vol.E101-B No.2 pp.434-440

Publication Date: 2018/02/01

Publicized: 2017/08/22

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2017ISP0025

Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016)

Category: MIMO

Authors

Yuta KASHINO
  Iwate University
Masakuni TSUNEZAWA
  Iwate University
Naoki HONMA
  Iwate University
Kentaro NISHIMORI
  Niigata University

Keyword

MIMO, full duplex, interference reduction, inter-terminal interference

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Yuta KASHINO, Masakuni TSUNEZAWA, Naoki HONMA, Kentaro NISHIMORI, "Inter-Terminal Interference Evaluation of Full Duplex MIMO Using Measured Channel" in IEICE TRANSACTIONS on Communications, vol. E101-B, no. 2, pp. 434-440, February 2018, doi: 10.1587/transcom.2017ISP0025.
Abstract: In-band full-duplex (FD) Multiple-Input and Multiple-Output (MIMO) communication performs uplink and downlink transmission at the same time using the same frequency. In this system, the spectral efficiency is theoretically double that of conventional duplex schemes, such as Time Division Duplex (TDD) and Frequency Division Duplex (FDD). However, this system suffers interference because the uplink and downlink streams coexist within the same channel. Especially at the terminal side, it is quite difficult for the terminal to eliminate the interference signals from other terminals since it has no knowledge about the contents of the interference signals. This paper presents an inter-terminal interference suppression method between the uplink and downlink signals assuming the multi-user environment. This method uses eigen-beamforming at the transmitting terminal to direct the null to the other terminal. Since this beamforming technique reduces the degrees of freedom available, the interference suppression performance and transmitting data-rate have a trade-off relation. This study investigates the system capacity characteristics in multi-user full-duplex MIMO communication using the propagation channel information measured in an actual outdoor experiment and shows that the proposed communication scheme offers higher system capacity than the conventional scheme.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.2017ISP0025/_p

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@ARTICLE{e101-b_2_434,
author={Yuta KASHINO, Masakuni TSUNEZAWA, Naoki HONMA, Kentaro NISHIMORI, },
journal={IEICE TRANSACTIONS on Communications},
title={Inter-Terminal Interference Evaluation of Full Duplex MIMO Using Measured Channel},
year={2018},
volume={E101-B},
number={2},
pages={434-440},
abstract={In-band full-duplex (FD) Multiple-Input and Multiple-Output (MIMO) communication performs uplink and downlink transmission at the same time using the same frequency. In this system, the spectral efficiency is theoretically double that of conventional duplex schemes, such as Time Division Duplex (TDD) and Frequency Division Duplex (FDD). However, this system suffers interference because the uplink and downlink streams coexist within the same channel. Especially at the terminal side, it is quite difficult for the terminal to eliminate the interference signals from other terminals since it has no knowledge about the contents of the interference signals. This paper presents an inter-terminal interference suppression method between the uplink and downlink signals assuming the multi-user environment. This method uses eigen-beamforming at the transmitting terminal to direct the null to the other terminal. Since this beamforming technique reduces the degrees of freedom available, the interference suppression performance and transmitting data-rate have a trade-off relation. This study investigates the system capacity characteristics in multi-user full-duplex MIMO communication using the propagation channel information measured in an actual outdoor experiment and shows that the proposed communication scheme offers higher system capacity than the conventional scheme.},
keywords={},
doi={10.1587/transcom.2017ISP0025},
ISSN={1745-1345},
month={February},}

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TY - JOUR
TI - Inter-Terminal Interference Evaluation of Full Duplex MIMO Using Measured Channel
T2 - IEICE TRANSACTIONS on Communications
SP - 434
EP - 440
AU - Yuta KASHINO
AU - Masakuni TSUNEZAWA
AU - Naoki HONMA
AU - Kentaro NISHIMORI
PY - 2018
DO - 10.1587/transcom.2017ISP0025
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2018
AB - In-band full-duplex (FD) Multiple-Input and Multiple-Output (MIMO) communication performs uplink and downlink transmission at the same time using the same frequency. In this system, the spectral efficiency is theoretically double that of conventional duplex schemes, such as Time Division Duplex (TDD) and Frequency Division Duplex (FDD). However, this system suffers interference because the uplink and downlink streams coexist within the same channel. Especially at the terminal side, it is quite difficult for the terminal to eliminate the interference signals from other terminals since it has no knowledge about the contents of the interference signals. This paper presents an inter-terminal interference suppression method between the uplink and downlink signals assuming the multi-user environment. This method uses eigen-beamforming at the transmitting terminal to direct the null to the other terminal. Since this beamforming technique reduces the degrees of freedom available, the interference suppression performance and transmitting data-rate have a trade-off relation. This study investigates the system capacity characteristics in multi-user full-duplex MIMO communication using the propagation channel information measured in an actual outdoor experiment and shows that the proposed communication scheme offers higher system capacity than the conventional scheme.
ER -