The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Os sistemas de comunicação móvel de quinta geração (5G) empregam tecnologia de formação de feixe usando múltiplas entradas e múltiplas saídas (MIMO) para melhorar a qualidade de recepção e a eficiência do espectro dentro de uma célula. Enquanto isso, a formação de feixe coordenada entre múltiplas estações base é uma abordagem eficaz para melhorar a eficiência do espectro nas bordas das células, na qual o MIMO massivo é implantado em estações base geograficamente distantes e o controle da formação de feixe é conduzido de maneira cooperativa. A formação de feixe baseada em livro de código é um método para realizar a formação de feixe coordenada de múltiplas células, em que cada estação base seleciona um dos vários feixes que são predefinidos em um livro de código. Na formação de feixes baseada em livro de código, é importante projetar um livro de código eficiente que leve em consideração a alocação e o número de feixes. Em geral, quanto maior o número de feixes definidos num livro de códigos, mais afinado pode ser o controlo do feixe e pode ser esperada uma maior melhoria na eficiência do espectro. No entanto, é necessário um enorme processamento de sinal para otimizar as combinações de feixes com um grande número de feixes por formação de feixe coordenada. Este artigo propõe um novo projeto de livro de códigos que atribui eficientemente direções e larguras de feixe em um plano vertical. Simulações de computador mostraram que o livro de códigos proposto tem um desempenho tão bom quanto o método convencional, exigindo menos combinações de feixes.
Kenji HOSHINO
Tokyo Institute of Technology,Softbank Corp.
Teruya FUJII
Tokyo Institute of Technology,Softbank Corp.
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Kenji HOSHINO, Teruya FUJII, "Codebook Design for Vertical Beamforming by Multi-Cell Coordination" in IEICE TRANSACTIONS on Fundamentals,
vol. E105-A, no. 4, pp. 622-630, April 2022, doi: 10.1587/transfun.2021SMP0017.
Abstract: Fifth-generation (5G) mobile communication systems employ beamforming technology using massive multiple-input and multiple-output (MIMO) to improve the reception quality and spectrum efficiency within a cell. Meanwhile, coordinated beamforming among multiple base stations is an effective approach to improving the spectrum efficiency at the cell edges, in which massive MIMO is deployed at geographically distant base stations and beamforming control is conducted in a cooperative manner. Codebook-based beamforming is a method for realizing multi-cell coordinated beamforming, in which each base station selects one of multiple beams that are predefined in a codebook. In codebook-based beamforming, it is important to design an efficient codebook that takes into account the beam allocation and the number of beams. In general, the larger the number of beams defined in a codebook, the more finely tuned the beam control can be and a greater improvement in spectrum efficiency can be expected. However, it requires a huge signal processing to optimize the beam combinations with a large number of beams by coordinated beamforming. This paper proposes a novel codebook design that efficiently assigns beam directions and widths in a vertical plane. Computer simulations showed that the proposed codebook performs as well as the conventional method while requiring fewer beam combinations.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.2021SMP0017/_p
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@ARTICLE{e105-a_4_622,
author={Kenji HOSHINO, Teruya FUJII, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Codebook Design for Vertical Beamforming by Multi-Cell Coordination},
year={2022},
volume={E105-A},
number={4},
pages={622-630},
abstract={Fifth-generation (5G) mobile communication systems employ beamforming technology using massive multiple-input and multiple-output (MIMO) to improve the reception quality and spectrum efficiency within a cell. Meanwhile, coordinated beamforming among multiple base stations is an effective approach to improving the spectrum efficiency at the cell edges, in which massive MIMO is deployed at geographically distant base stations and beamforming control is conducted in a cooperative manner. Codebook-based beamforming is a method for realizing multi-cell coordinated beamforming, in which each base station selects one of multiple beams that are predefined in a codebook. In codebook-based beamforming, it is important to design an efficient codebook that takes into account the beam allocation and the number of beams. In general, the larger the number of beams defined in a codebook, the more finely tuned the beam control can be and a greater improvement in spectrum efficiency can be expected. However, it requires a huge signal processing to optimize the beam combinations with a large number of beams by coordinated beamforming. This paper proposes a novel codebook design that efficiently assigns beam directions and widths in a vertical plane. Computer simulations showed that the proposed codebook performs as well as the conventional method while requiring fewer beam combinations.},
keywords={},
doi={10.1587/transfun.2021SMP0017},
ISSN={1745-1337},
month={April},}
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TY - JOUR
TI - Codebook Design for Vertical Beamforming by Multi-Cell Coordination
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 622
EP - 630
AU - Kenji HOSHINO
AU - Teruya FUJII
PY - 2022
DO - 10.1587/transfun.2021SMP0017
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E105-A
IS - 4
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - April 2022
AB - Fifth-generation (5G) mobile communication systems employ beamforming technology using massive multiple-input and multiple-output (MIMO) to improve the reception quality and spectrum efficiency within a cell. Meanwhile, coordinated beamforming among multiple base stations is an effective approach to improving the spectrum efficiency at the cell edges, in which massive MIMO is deployed at geographically distant base stations and beamforming control is conducted in a cooperative manner. Codebook-based beamforming is a method for realizing multi-cell coordinated beamforming, in which each base station selects one of multiple beams that are predefined in a codebook. In codebook-based beamforming, it is important to design an efficient codebook that takes into account the beam allocation and the number of beams. In general, the larger the number of beams defined in a codebook, the more finely tuned the beam control can be and a greater improvement in spectrum efficiency can be expected. However, it requires a huge signal processing to optimize the beam combinations with a large number of beams by coordinated beamforming. This paper proposes a novel codebook design that efficiently assigns beam directions and widths in a vertical plane. Computer simulations showed that the proposed codebook performs as well as the conventional method while requiring fewer beam combinations.
ER -