A Study on Optimal Beam Patterns for Single User Massive MIMO Transmissions

Maki ARAI; Kei SAKAGUCHI; Kiyomichi ARAKI

doi:10.1587/transcom.2018EBP3030

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A Study on Optimal Beam Patterns for Single User Massive MIMO Transmissions

Maki ARAI, Kei SAKAGUCHI, Kiyomichi ARAKI

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This paper proposes optimal beam patterns of analog beamforming for SU (Single User) massive MIMO (Multi-Input Multi-Output) transmission systems. For hybrid beamforming in SU massive MIMO systems, there are several design parameters such as beam patterns, the number of beams (streams), the shape of array antennas, and so on. In conventional hybrid beamforming, rectangular patch array antennas implemented on a planar surface with linear phase shift beam patterns have been used widely. However, it remains unclear whether existing configurations are optimal or not. Therefore, we propose a method using OBPB (Optimal Beam Projection Beamforming) for designing configuration parameters of the hybrid beamforming. By using the method, the optimal beam patterns are derived first, and are projected on the assumed surface to calculate the achievable number of streams and the resulting channel capacity. The results indicate OBPB with a spherical surface yields at least 3.5 times higher channel capacity than conventional configurations.

Publication: IEICE TRANSACTIONS on Communications Vol.E102-B No.2 pp.324-336

Publication Date: 2019/02/01

Publicized: 2018/07/30

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2018EBP3030

Type of Manuscript: PAPER

Category: Antennas and Propagation

Authors

Maki ARAI
  Tokyo Institute of Technology
Kei SAKAGUCHI
  Tokyo Institute of Technology
Kiyomichi ARAKI
  Tokyo Institute of Technology

Keyword

massive MIMO, beamforming, beam pattern, directivity, spherical mode expansion, capacity maximization

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Maki ARAI, Kei SAKAGUCHI, Kiyomichi ARAKI, "A Study on Optimal Beam Patterns for Single User Massive MIMO Transmissions" in IEICE TRANSACTIONS on Communications, vol. E102-B, no. 2, pp. 324-336, February 2019, doi: 10.1587/transcom.2018EBP3030.
Abstract: This paper proposes optimal beam patterns of analog beamforming for SU (Single User) massive MIMO (Multi-Input Multi-Output) transmission systems. For hybrid beamforming in SU massive MIMO systems, there are several design parameters such as beam patterns, the number of beams (streams), the shape of array antennas, and so on. In conventional hybrid beamforming, rectangular patch array antennas implemented on a planar surface with linear phase shift beam patterns have been used widely. However, it remains unclear whether existing configurations are optimal or not. Therefore, we propose a method using OBPB (Optimal Beam Projection Beamforming) for designing configuration parameters of the hybrid beamforming. By using the method, the optimal beam patterns are derived first, and are projected on the assumed surface to calculate the achievable number of streams and the resulting channel capacity. The results indicate OBPB with a spherical surface yields at least 3.5 times higher channel capacity than conventional configurations.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2018EBP3030/_p

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@ARTICLE{e102-b_2_324,
author={Maki ARAI, Kei SAKAGUCHI, Kiyomichi ARAKI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Study on Optimal Beam Patterns for Single User Massive MIMO Transmissions},
year={2019},
volume={E102-B},
number={2},
pages={324-336},
abstract={This paper proposes optimal beam patterns of analog beamforming for SU (Single User) massive MIMO (Multi-Input Multi-Output) transmission systems. For hybrid beamforming in SU massive MIMO systems, there are several design parameters such as beam patterns, the number of beams (streams), the shape of array antennas, and so on. In conventional hybrid beamforming, rectangular patch array antennas implemented on a planar surface with linear phase shift beam patterns have been used widely. However, it remains unclear whether existing configurations are optimal or not. Therefore, we propose a method using OBPB (Optimal Beam Projection Beamforming) for designing configuration parameters of the hybrid beamforming. By using the method, the optimal beam patterns are derived first, and are projected on the assumed surface to calculate the achievable number of streams and the resulting channel capacity. The results indicate OBPB with a spherical surface yields at least 3.5 times higher channel capacity than conventional configurations.},
keywords={},
doi={10.1587/transcom.2018EBP3030},
ISSN={1745-1345},
month={February},}

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TY - JOUR
TI - A Study on Optimal Beam Patterns for Single User Massive MIMO Transmissions
T2 - IEICE TRANSACTIONS on Communications
SP - 324
EP - 336
AU - Maki ARAI
AU - Kei SAKAGUCHI
AU - Kiyomichi ARAKI
PY - 2019
DO - 10.1587/transcom.2018EBP3030
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E102-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2019
AB - This paper proposes optimal beam patterns of analog beamforming for SU (Single User) massive MIMO (Multi-Input Multi-Output) transmission systems. For hybrid beamforming in SU massive MIMO systems, there are several design parameters such as beam patterns, the number of beams (streams), the shape of array antennas, and so on. In conventional hybrid beamforming, rectangular patch array antennas implemented on a planar surface with linear phase shift beam patterns have been used widely. However, it remains unclear whether existing configurations are optimal or not. Therefore, we propose a method using OBPB (Optimal Beam Projection Beamforming) for designing configuration parameters of the hybrid beamforming. By using the method, the optimal beam patterns are derived first, and are projected on the assumed surface to calculate the achievable number of streams and the resulting channel capacity. The results indicate OBPB with a spherical surface yields at least 3.5 times higher channel capacity than conventional configurations.
ER -