Hybrid Precoder Design for Angle-of-Departure Estimation with Limited-Resolution Phase Shifters
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| Titel: | Hybrid Precoder Design for Angle-of-Departure Estimation with Limited-Resolution Phase Shifters |
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| Autoren: | Huang, Huiping, 1991, Keskin, Musa Furkan, 1988, Wymeersch, Henk, 1976, Cai, Xuesong, Wu, Linlong, Thunberg, Johan, Tufvesson, Fredrik |
| Quelle: | Bortom 5G Positionering Hårdvarumedveten integrerad lokalisering och avkänning för kommunikationssystem Near-field Enhanced Accuracy Tracking for 6G Networks (NEAT-6G) IEEE Transactions on Communications. 73(6):4439-4453 |
| Schlagwörter: | angle-of-departure estimation, Hybrid beamforming, hybrid precoder, alternating optimization, alternating direction method of multipliers, phase shifter |
| Beschreibung: | 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. |
| Dateibeschreibung: | electronic |
| Zugangs-URL: | https://research.chalmers.se/publication/546613 https://research.chalmers.se/publication/544615 https://research.chalmers.se/publication/546613/file/546613_Fulltext.pdf |
| Datenbank: | SwePub |
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Nájsť tento článok vo Web of Science | 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 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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| ISSN: | 00906778 15580857 |
| DOI: | 10.1109/TCOMM.2024.3487517 |