Multibeam massive multiple-input multiple-output (MIMO) configuration has been proposed that selects high-power beams in an analog part and uses a blind algorithm, such as the constant-modulus algorithm (CMA), in the digital part. The CMA does not require channel state information. However, when least-squares CMA (LS-CMA) is applied to a quadrature amplitude modulation signal whose amplitude changes, the interference cancellation effect decreases as the modulation order increases. In this paper, a variable-step-size-based CMA (VS-CMA), which modifies the step size of the steepest-descent CMA, is proposed as a blind adaptive algorithm to replace LS-CMA. The basic performance of VS-CMA, its success in cancelling interference, and its effectiveness in multibeam massive MIMO transmission are verified via simulation and compared with other blind algorithms such as independent component analysis, particularly when the data smoothing size is small.
Kentaro NISHIMORI
Niigata University
Kazuki MARUTA
Tokyo University of Science
Takefumi HIRAGURI
Nippon Institute of Technology
Hidehisa SHIOMI
Osaka University
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Kentaro NISHIMORI, Kazuki MARUTA, Takefumi HIRAGURI, Hidehisa SHIOMI, "Fast-Converging Constant Modulus Algorithm with Variable Step Size for Multibeam Massive MIMO" in IEICE TRANSACTIONS on Communications,
vol. E105-B, no. 10, pp. 1154-1161, October 2022, doi: 10.1587/transcom.2021MEP0002.
Abstract: Multibeam massive multiple-input multiple-output (MIMO) configuration has been proposed that selects high-power beams in an analog part and uses a blind algorithm, such as the constant-modulus algorithm (CMA), in the digital part. The CMA does not require channel state information. However, when least-squares CMA (LS-CMA) is applied to a quadrature amplitude modulation signal whose amplitude changes, the interference cancellation effect decreases as the modulation order increases. In this paper, a variable-step-size-based CMA (VS-CMA), which modifies the step size of the steepest-descent CMA, is proposed as a blind adaptive algorithm to replace LS-CMA. The basic performance of VS-CMA, its success in cancelling interference, and its effectiveness in multibeam massive MIMO transmission are verified via simulation and compared with other blind algorithms such as independent component analysis, particularly when the data smoothing size is small.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2021MEP0002/_p
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@ARTICLE{e105-b_10_1154,
author={Kentaro NISHIMORI, Kazuki MARUTA, Takefumi HIRAGURI, Hidehisa SHIOMI, },
journal={IEICE TRANSACTIONS on Communications},
title={Fast-Converging Constant Modulus Algorithm with Variable Step Size for Multibeam Massive MIMO},
year={2022},
volume={E105-B},
number={10},
pages={1154-1161},
abstract={Multibeam massive multiple-input multiple-output (MIMO) configuration has been proposed that selects high-power beams in an analog part and uses a blind algorithm, such as the constant-modulus algorithm (CMA), in the digital part. The CMA does not require channel state information. However, when least-squares CMA (LS-CMA) is applied to a quadrature amplitude modulation signal whose amplitude changes, the interference cancellation effect decreases as the modulation order increases. In this paper, a variable-step-size-based CMA (VS-CMA), which modifies the step size of the steepest-descent CMA, is proposed as a blind adaptive algorithm to replace LS-CMA. The basic performance of VS-CMA, its success in cancelling interference, and its effectiveness in multibeam massive MIMO transmission are verified via simulation and compared with other blind algorithms such as independent component analysis, particularly when the data smoothing size is small.},
keywords={},
doi={10.1587/transcom.2021MEP0002},
ISSN={1745-1345},
month={October},}
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TY - JOUR
TI - Fast-Converging Constant Modulus Algorithm with Variable Step Size for Multibeam Massive MIMO
T2 - IEICE TRANSACTIONS on Communications
SP - 1154
EP - 1161
AU - Kentaro NISHIMORI
AU - Kazuki MARUTA
AU - Takefumi HIRAGURI
AU - Hidehisa SHIOMI
PY - 2022
DO - 10.1587/transcom.2021MEP0002
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E105-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2022
AB - Multibeam massive multiple-input multiple-output (MIMO) configuration has been proposed that selects high-power beams in an analog part and uses a blind algorithm, such as the constant-modulus algorithm (CMA), in the digital part. The CMA does not require channel state information. However, when least-squares CMA (LS-CMA) is applied to a quadrature amplitude modulation signal whose amplitude changes, the interference cancellation effect decreases as the modulation order increases. In this paper, a variable-step-size-based CMA (VS-CMA), which modifies the step size of the steepest-descent CMA, is proposed as a blind adaptive algorithm to replace LS-CMA. The basic performance of VS-CMA, its success in cancelling interference, and its effectiveness in multibeam massive MIMO transmission are verified via simulation and compared with other blind algorithms such as independent component analysis, particularly when the data smoothing size is small.
ER -