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Hybrid Precoder Design for Angle-of-Departure Estimation with Limited-Resolution Phase Shifters

Huang, Huiping ; Keskin, Musa Furkan ; Wymeersch, Henk ; Cai, Xuesong LU ; Wu, Linlong ; Thunberg, Johan LU and Tufvesson, Fredrik LU orcid (2024) In IEEE Transactions on Communications
Abstract

Hybrid analog-digital beamforming stands out as a key enabler for future communication systems with a massive number of antennas. In this paper, we investigate the hybrid precoder design problem for angle-of-departure (AoD) estimation, where we take into account the practical constraint on the limited resolution of phase shifters. Our goal is to design a radio-frequency (RF) precoder and a base-band (BB) precoder to estimate AoD of the user with high accuracy. To this end, we propose a two-step strategy where we first obtain the fully digital precoder that minimizes the angle error bound, and then the resulting digital precoder is decomposed into an RF precoder and a BB precoder, based on the alternating optimization and the alternating... (More)

Hybrid analog-digital beamforming stands out as a key enabler for future communication systems with a massive number of antennas. In this paper, we investigate the hybrid precoder design problem for angle-of-departure (AoD) estimation, where we take into account the practical constraint on the limited resolution of phase shifters. Our goal is to design a radio-frequency (RF) precoder and a base-band (BB) precoder to estimate AoD of the user with high accuracy. To this end, we propose a two-step strategy where we first obtain the fully digital precoder that minimizes the angle error bound, and then the resulting digital precoder is decomposed into an RF precoder and a BB precoder, based on the alternating optimization and the alternating direction method of multipliers. Furthermore, we derive the quantization error upper bound and provide convergence conditions for the proposed algorithm. Numerical results demonstrate the superior performance of the proposed method over state-of-the-art baselines.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
alternating direction method of multipliers, alternating optimization, angle-of-departure estimation, Hybrid beamforming, hybrid precoder, phase shifter
in
IEEE Transactions on Communications
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85208279999
ISSN
0090-6778
DOI
10.1109/TCOMM.2024.3487517
language
English
LU publication?
yes
id
77da1e0c-a13e-4f70-96fb-dbfd708b9958
date added to LUP
2024-12-11 11:51:32
date last changed
2025-06-23 12:01:28
@article{77da1e0c-a13e-4f70-96fb-dbfd708b9958,
  abstract     = {{<p>Hybrid analog-digital beamforming stands out as a key enabler for future communication systems with a massive number of antennas. In this paper, we investigate the hybrid precoder design problem for angle-of-departure (AoD) estimation, where we take into account the practical constraint on the limited resolution of phase shifters. Our goal is to design a radio-frequency (RF) precoder and a base-band (BB) precoder to estimate AoD of the user with high accuracy. To this end, we propose a two-step strategy where we first obtain the fully digital precoder that minimizes the angle error bound, and then the resulting digital precoder is decomposed into an RF precoder and a BB precoder, based on the alternating optimization and the alternating direction method of multipliers. Furthermore, we derive the quantization error upper bound and provide convergence conditions for the proposed algorithm. Numerical results demonstrate the superior performance of the proposed method over state-of-the-art baselines.</p>}},
  author       = {{Huang, Huiping and Keskin, Musa Furkan and Wymeersch, Henk and Cai, Xuesong and Wu, Linlong and Thunberg, Johan and Tufvesson, Fredrik}},
  issn         = {{0090-6778}},
  keywords     = {{alternating direction method of multipliers; alternating optimization; angle-of-departure estimation; Hybrid beamforming; hybrid precoder; phase shifter}},
  language     = {{eng}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Communications}},
  title        = {{Hybrid Precoder Design for Angle-of-Departure Estimation with Limited-Resolution Phase Shifters}},
  url          = {{http://dx.doi.org/10.1109/TCOMM.2024.3487517}},
  doi          = {{10.1109/TCOMM.2024.3487517}},
  year         = {{2024}},
}