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IEICE TRANSACTIONS on Communications

Fast-Converging Constant Modulus Algorithm with Variable Step Size for Multibeam Massive MIMO

Kentaro NISHIMORI, Kazuki MARUTA, Takefumi HIRAGURI, Hidehisa SHIOMI

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Summary :

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.

Publication
IEICE TRANSACTIONS on Communications Vol.E105-B No.10 pp.1154-1161
Publication Date
2022/10/01
Publicized
2022/04/21
Online ISSN
1745-1345
DOI
10.1587/transcom.2021MEP0002
Type of Manuscript
Special Section PAPER (Special Section on Multidisciplinary and Innovative Key technologies in Advanced communication systems (MIKA))
Category

Authors

Kentaro NISHIMORI
  Niigata University
Kazuki MARUTA
  Tokyo University of Science
Takefumi HIRAGURI
  Nippon Institute of Technology
Hidehisa SHIOMI
  Osaka University

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