Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels

Detalhes bibliográficos
Autor(a) principal: Araújo, Daniel Costa
Data de Publicação: 2017
Outros Autores: Karipidis, Eleftherios, Almeida, André Lima Férrer de, Mota, João César Moura
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/70731
Resumo: Massive multiple-input multiple-output (MIMO) theoretical performance results have attracted the attention of the community due to the possibility of increasing the spectral efficiency in wireless communications. The performance potential is mainly conditioned to the use of digital beamforming techniques which demand one radio-frequency (RF) chain per antenna element. For large arrays, this implementation may result in high complexity, power consumption, and cost. To reduce the number of RF chains, we use a hybrid beamforming (HB) architecture of an analog beamformer implemented by using phase-shifters and a low-dimensional digital beamformer. The performance of the HB depends on the resolution of the phase-shifters. However, very few works in the literature take into account finite phase-shifters. In this paper, we address the problem of designing HB in frequency selective channels using finite-resolution phase-shifters. The strategy is to exploit the second-order statistics of the channel and a least-square formulation to obtain the discrete phase of each phase-shifter. The digital part is derived based on analog solution to maximize the single-user MIMO system sum-rate. This solution requires a number of RF chains compared to the rank of the spatial covariance matrix which is far lower than ones demanded to implement the full digital beamforming. The simulation results show that the proposed technique can achieve a sum-rate performance very close to that of the digital beamforming assuming low-rank channels.
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spelling Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channelsMassive MIMOHybrid beamformingPhase-shiftersAlternating Least-SquaresMassive multiple-input multiple-output (MIMO) theoretical performance results have attracted the attention of the community due to the possibility of increasing the spectral efficiency in wireless communications. The performance potential is mainly conditioned to the use of digital beamforming techniques which demand one radio-frequency (RF) chain per antenna element. For large arrays, this implementation may result in high complexity, power consumption, and cost. To reduce the number of RF chains, we use a hybrid beamforming (HB) architecture of an analog beamformer implemented by using phase-shifters and a low-dimensional digital beamformer. The performance of the HB depends on the resolution of the phase-shifters. However, very few works in the literature take into account finite phase-shifters. In this paper, we address the problem of designing HB in frequency selective channels using finite-resolution phase-shifters. The strategy is to exploit the second-order statistics of the channel and a least-square formulation to obtain the discrete phase of each phase-shifter. The digital part is derived based on analog solution to maximize the single-user MIMO system sum-rate. This solution requires a number of RF chains compared to the rank of the spatial covariance matrix which is far lower than ones demanded to implement the full digital beamforming. The simulation results show that the proposed technique can achieve a sum-rate performance very close to that of the digital beamforming assuming low-rank channels.International Conference on Acoustics, Speech and Signal Processing2023-02-09T17:36:01Z2023-02-09T17:36:01Z2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectapplication/pdfMOTA, J. C. M. et al. Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels. INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, 2017, Nova Orleans. Anais... Nova Orleans: IEEE, 2017. p. 6498-6502.http://www.repositorio.ufc.br/handle/riufc/70731Araújo, Daniel CostaKaripidis, EleftheriosAlmeida, André Lima Férrer deMota, João César Mouraengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2023-03-30T12:42:05Zoai:repositorio.ufc.br:riufc/70731Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:17:07.233136Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels
title Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels
spellingShingle Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels
Araújo, Daniel Costa
Massive MIMO
Hybrid beamforming
Phase-shifters
Alternating Least-Squares
title_short Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels
title_full Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels
title_fullStr Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels
title_full_unstemmed Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels
title_sort Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels
author Araújo, Daniel Costa
author_facet Araújo, Daniel Costa
Karipidis, Eleftherios
Almeida, André Lima Férrer de
Mota, João César Moura
author_role author
author2 Karipidis, Eleftherios
Almeida, André Lima Férrer de
Mota, João César Moura
author2_role author
author
author
dc.contributor.author.fl_str_mv Araújo, Daniel Costa
Karipidis, Eleftherios
Almeida, André Lima Férrer de
Mota, João César Moura
dc.subject.por.fl_str_mv Massive MIMO
Hybrid beamforming
Phase-shifters
Alternating Least-Squares
topic Massive MIMO
Hybrid beamforming
Phase-shifters
Alternating Least-Squares
description Massive multiple-input multiple-output (MIMO) theoretical performance results have attracted the attention of the community due to the possibility of increasing the spectral efficiency in wireless communications. The performance potential is mainly conditioned to the use of digital beamforming techniques which demand one radio-frequency (RF) chain per antenna element. For large arrays, this implementation may result in high complexity, power consumption, and cost. To reduce the number of RF chains, we use a hybrid beamforming (HB) architecture of an analog beamformer implemented by using phase-shifters and a low-dimensional digital beamformer. The performance of the HB depends on the resolution of the phase-shifters. However, very few works in the literature take into account finite phase-shifters. In this paper, we address the problem of designing HB in frequency selective channels using finite-resolution phase-shifters. The strategy is to exploit the second-order statistics of the channel and a least-square formulation to obtain the discrete phase of each phase-shifter. The digital part is derived based on analog solution to maximize the single-user MIMO system sum-rate. This solution requires a number of RF chains compared to the rank of the spatial covariance matrix which is far lower than ones demanded to implement the full digital beamforming. The simulation results show that the proposed technique can achieve a sum-rate performance very close to that of the digital beamforming assuming low-rank channels.
publishDate 2017
dc.date.none.fl_str_mv 2017
2023-02-09T17:36:01Z
2023-02-09T17:36:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv MOTA, J. C. M. et al. Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels. INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, 2017, Nova Orleans. Anais... Nova Orleans: IEEE, 2017. p. 6498-6502.
http://www.repositorio.ufc.br/handle/riufc/70731
identifier_str_mv MOTA, J. C. M. et al. Hybrid beamforming design with finite-resolution phase-shifters for frequency selective massive MIMO channels. INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, 2017, Nova Orleans. Anais... Nova Orleans: IEEE, 2017. p. 6498-6502.
url http://www.repositorio.ufc.br/handle/riufc/70731
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv International Conference on Acoustics, Speech and Signal Processing
publisher.none.fl_str_mv International Conference on Acoustics, Speech and Signal Processing
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
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