NL-BMD: Nonlinear Block Multi-Diagonalization Precoding for High SHF Wide-Band Massive MIMO in 5G

Hiroshi NISHIMOTO; Akinori TAIRA; Hiroki IURA; Shigeru UCHIDA; Akihiro OKAZAKI; Atsushi OKAMURA

doi:10.1587/transcom.2016FGP0003

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NL-BMD: Nonlinear Block Multi-Diagonalization Precoding for High SHF Wide-Band Massive MIMO in 5G

Hiroshi NISHIMOTO, Akinori TAIRA, Hiroki IURA, Shigeru UCHIDA, Akihiro OKAZAKI, Atsushi OKAMURA

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Summary :

Massive multiple-input multiple-output (MIMO) technology is one of the key enablers in the fifth generation mobile communications (5G), in order to accommodate growing traffic demands and to utilize higher super high frequency (SHF) and extremely high frequency (EHF) bands. In the paper, we propose a novel transmit precoding named “nonlinear block multi-diagonalization (NL-BMD) precoding” for multiuser MIMO (MU-MIMO) downlink toward 5G. Our NL-BMD precoding strategy is composed of two essential techniques: block multi-diagonalization (BMD) and adjacent inter-user interference pre-cancellation (IUI-PC). First, as an extension of the conventional block diagonalization (BD) method, the linear BMD precoder for the desired user is computed to incorporate a predetermined number of interfering users, in order to ensure extra degrees of freedom at the transmit array even after null steering. Additionally, adjacent IUI-PC, as a nonlinear operation, is introduced to manage the residual interference partially allowed in BMD computation, with effectively-reduced numerical complexity. It is revealed through computer simulations that the proposed NL-BMD precoding yields up to 67% performance improvement in average sum-rate spectral efficiency and enables large-capacity transmission regardless of the user distribution, compared with the conventional BD precoding.

Publication: IEICE TRANSACTIONS on Communications Vol.E100-B No.8 pp.1215-1227

Publication Date: 2017/08/01

Publicized: 2017/02/08

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2016FGP0003

Type of Manuscript: Special Section PAPER (Special Section on Radio Access Technologies for 5G Mobile Communications System)

Category: Wireless Communication Technologies

Authors

Hiroshi NISHIMOTO
  Mitsubishi Electric Corporation
Akinori TAIRA
  Mitsubishi Electric Corporation
Hiroki IURA
  Mitsubishi Electric Corporation
Shigeru UCHIDA
  Mitsubishi Electric Corporation
Akihiro OKAZAKI
  Mitsubishi Electric Corporation
Atsushi OKAMURA
  Mitsubishi Electric Corporation

Keyword

5G, massive MIMO, MU-MIMO, inter-user interference, precoding, nonlinear block multi-diagonalization

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Hiroshi NISHIMOTO, Akinori TAIRA, Hiroki IURA, Shigeru UCHIDA, Akihiro OKAZAKI, Atsushi OKAMURA, "NL-BMD: Nonlinear Block Multi-Diagonalization Precoding for High SHF Wide-Band Massive MIMO in 5G" in IEICE TRANSACTIONS on Communications, vol. E100-B, no. 8, pp. 1215-1227, August 2017, doi: 10.1587/transcom.2016FGP0003.
Abstract: Massive multiple-input multiple-output (MIMO) technology is one of the key enablers in the fifth generation mobile communications (5G), in order to accommodate growing traffic demands and to utilize higher super high frequency (SHF) and extremely high frequency (EHF) bands. In the paper, we propose a novel transmit precoding named “nonlinear block multi-diagonalization (NL-BMD) precoding” for multiuser MIMO (MU-MIMO) downlink toward 5G. Our NL-BMD precoding strategy is composed of two essential techniques: block multi-diagonalization (BMD) and adjacent inter-user interference pre-cancellation (IUI-PC). First, as an extension of the conventional block diagonalization (BD) method, the linear BMD precoder for the desired user is computed to incorporate a predetermined number of interfering users, in order to ensure extra degrees of freedom at the transmit array even after null steering. Additionally, adjacent IUI-PC, as a nonlinear operation, is introduced to manage the residual interference partially allowed in BMD computation, with effectively-reduced numerical complexity. It is revealed through computer simulations that the proposed NL-BMD precoding yields up to 67% performance improvement in average sum-rate spectral efficiency and enables large-capacity transmission regardless of the user distribution, compared with the conventional BD precoding.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.2016FGP0003/_p

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@ARTICLE{e100-b_8_1215,
author={Hiroshi NISHIMOTO, Akinori TAIRA, Hiroki IURA, Shigeru UCHIDA, Akihiro OKAZAKI, Atsushi OKAMURA, },
journal={IEICE TRANSACTIONS on Communications},
title={NL-BMD: Nonlinear Block Multi-Diagonalization Precoding for High SHF Wide-Band Massive MIMO in 5G},
year={2017},
volume={E100-B},
number={8},
pages={1215-1227},
abstract={Massive multiple-input multiple-output (MIMO) technology is one of the key enablers in the fifth generation mobile communications (5G), in order to accommodate growing traffic demands and to utilize higher super high frequency (SHF) and extremely high frequency (EHF) bands. In the paper, we propose a novel transmit precoding named “nonlinear block multi-diagonalization (NL-BMD) precoding” for multiuser MIMO (MU-MIMO) downlink toward 5G. Our NL-BMD precoding strategy is composed of two essential techniques: block multi-diagonalization (BMD) and adjacent inter-user interference pre-cancellation (IUI-PC). First, as an extension of the conventional block diagonalization (BD) method, the linear BMD precoder for the desired user is computed to incorporate a predetermined number of interfering users, in order to ensure extra degrees of freedom at the transmit array even after null steering. Additionally, adjacent IUI-PC, as a nonlinear operation, is introduced to manage the residual interference partially allowed in BMD computation, with effectively-reduced numerical complexity. It is revealed through computer simulations that the proposed NL-BMD precoding yields up to 67% performance improvement in average sum-rate spectral efficiency and enables large-capacity transmission regardless of the user distribution, compared with the conventional BD precoding.},
keywords={},
doi={10.1587/transcom.2016FGP0003},
ISSN={1745-1345},
month={August},}

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TY - JOUR
TI - NL-BMD: Nonlinear Block Multi-Diagonalization Precoding for High SHF Wide-Band Massive MIMO in 5G
T2 - IEICE TRANSACTIONS on Communications
SP - 1215
EP - 1227
AU - Hiroshi NISHIMOTO
AU - Akinori TAIRA
AU - Hiroki IURA
AU - Shigeru UCHIDA
AU - Akihiro OKAZAKI
AU - Atsushi OKAMURA
PY - 2017
DO - 10.1587/transcom.2016FGP0003
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E100-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2017
AB - Massive multiple-input multiple-output (MIMO) technology is one of the key enablers in the fifth generation mobile communications (5G), in order to accommodate growing traffic demands and to utilize higher super high frequency (SHF) and extremely high frequency (EHF) bands. In the paper, we propose a novel transmit precoding named “nonlinear block multi-diagonalization (NL-BMD) precoding” for multiuser MIMO (MU-MIMO) downlink toward 5G. Our NL-BMD precoding strategy is composed of two essential techniques: block multi-diagonalization (BMD) and adjacent inter-user interference pre-cancellation (IUI-PC). First, as an extension of the conventional block diagonalization (BD) method, the linear BMD precoder for the desired user is computed to incorporate a predetermined number of interfering users, in order to ensure extra degrees of freedom at the transmit array even after null steering. Additionally, adjacent IUI-PC, as a nonlinear operation, is introduced to manage the residual interference partially allowed in BMD computation, with effectively-reduced numerical complexity. It is revealed through computer simulations that the proposed NL-BMD precoding yields up to 67% performance improvement in average sum-rate spectral efficiency and enables large-capacity transmission regardless of the user distribution, compared with the conventional BD precoding.
ER -