The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
L'accès multiple non orthogonal (NOMA) permet à plusieurs utilisateurs de multiplexer dans le domaine de puissance pour améliorer l'efficacité spectrale. Pour améliorer encore ses performances, il est souhaitable de réduire les interférences inter-utilisateurs (IUI). Dans cet article, nous proposons un schéma NOMA (ANOMA) asynchrone de liaison descendante applicable aux canaux sélectifs en fréquence. Le schéma proposé introduit un décalage de symbole intentionnel entre les signaux multiplexés pour réduire l'IUI, et il utilise une transmission monoporteuse à préfixe cyclique avec égalisation dans le domaine fréquentiel (FDE) pour réduire les interférences entre symboles. Nous montrons que l'erreur quadratique moyenne pour le FDE du schéma ANOMA proposé est inférieure à celle d'un schéma NOMA conventionnel. Les résultats de la simulation montrent que l'ANOMA proposé avec une allocation de puissance appropriée permet d'obtenir un meilleur débit total par rapport au NOMA conventionnel.
Tomonari KURAYAMA
Ibaraki University
Teruyuki MIYAJIMA
Ibaraki University
Yoshiki SUGITANI
Ibaraki University
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Tomonari KURAYAMA, Teruyuki MIYAJIMA, Yoshiki SUGITANI, "Asynchronous NOMA Downlink Based on Single-Carrier Frequency-Domain Equalization" in IEICE TRANSACTIONS on Communications,
vol. E105-B, no. 10, pp. 1173-1180, October 2022, doi: 10.1587/transcom.2021MEP0003.
Abstract: Non-orthogonal multiple access (NOMA) allows several users to multiplex in the power-domain to improve spectral efficiency. To further improve its performance, it is desirable to reduce inter-user interference (IUI). In this paper, we propose a downlink asynchronous NOMA (ANOMA) scheme applicable to frequency-selective channels. The proposed scheme introduces an intentional symbol offset between the multiplexed signals to reduce IUI, and it employs cyclic-prefixed single-carrier transmission with frequency-domain equalization (FDE) to reduce inter-symbol interference. We show that the mean square error for the FDE of the proposed ANOMA scheme is smaller than that of a conventional NOMA scheme. Simulation results show that the proposed ANOMA with appropriate power allocation achieves a better sum rate compared to the conventional NOMA.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2021MEP0003/_p
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@ARTICLE{e105-b_10_1173,
author={Tomonari KURAYAMA, Teruyuki MIYAJIMA, Yoshiki SUGITANI, },
journal={IEICE TRANSACTIONS on Communications},
title={Asynchronous NOMA Downlink Based on Single-Carrier Frequency-Domain Equalization},
year={2022},
volume={E105-B},
number={10},
pages={1173-1180},
abstract={Non-orthogonal multiple access (NOMA) allows several users to multiplex in the power-domain to improve spectral efficiency. To further improve its performance, it is desirable to reduce inter-user interference (IUI). In this paper, we propose a downlink asynchronous NOMA (ANOMA) scheme applicable to frequency-selective channels. The proposed scheme introduces an intentional symbol offset between the multiplexed signals to reduce IUI, and it employs cyclic-prefixed single-carrier transmission with frequency-domain equalization (FDE) to reduce inter-symbol interference. We show that the mean square error for the FDE of the proposed ANOMA scheme is smaller than that of a conventional NOMA scheme. Simulation results show that the proposed ANOMA with appropriate power allocation achieves a better sum rate compared to the conventional NOMA.},
keywords={},
doi={10.1587/transcom.2021MEP0003},
ISSN={1745-1345},
month={October},}
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TY - JOUR
TI - Asynchronous NOMA Downlink Based on Single-Carrier Frequency-Domain Equalization
T2 - IEICE TRANSACTIONS on Communications
SP - 1173
EP - 1180
AU - Tomonari KURAYAMA
AU - Teruyuki MIYAJIMA
AU - Yoshiki SUGITANI
PY - 2022
DO - 10.1587/transcom.2021MEP0003
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E105-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2022
AB - Non-orthogonal multiple access (NOMA) allows several users to multiplex in the power-domain to improve spectral efficiency. To further improve its performance, it is desirable to reduce inter-user interference (IUI). In this paper, we propose a downlink asynchronous NOMA (ANOMA) scheme applicable to frequency-selective channels. The proposed scheme introduces an intentional symbol offset between the multiplexed signals to reduce IUI, and it employs cyclic-prefixed single-carrier transmission with frequency-domain equalization (FDE) to reduce inter-symbol interference. We show that the mean square error for the FDE of the proposed ANOMA scheme is smaller than that of a conventional NOMA scheme. Simulation results show that the proposed ANOMA with appropriate power allocation achieves a better sum rate compared to the conventional NOMA.
ER -