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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
NOMA(비직교 다중 접속)를 사용하면 여러 사용자가 전력 도메인에서 다중화하여 스펙트럼 효율성을 향상시킬 수 있습니다. 성능을 더욱 향상시키기 위해서는 사용자 간 간섭(IUI)을 줄이는 것이 바람직합니다. 본 논문에서는 주파수 선택형 채널에 적용 가능한 하향링크 ANOMA(Asynchronous NOMA) 방식을 제안한다. 제안된 방식은 IUI를 줄이기 위해 다중화된 신호 사이에 의도적인 심볼 오프셋을 도입하고, 심볼 간 간섭을 줄이기 위해 주파수 영역 등화(FDE)를 사용하는 순환 접두어 단일 캐리어 전송을 사용합니다. 제안된 ANOMA 방식의 FDE에 대한 평균 제곱 오차가 기존 NOMA 방식의 평균 제곱 오차보다 작음을 보여줍니다. 시뮬레이션 결과는 적절한 전력 할당을 갖춘 제안된 ANOMA가 기존 NOMA에 비해 더 나은 합계 비율을 달성함을 보여줍니다.
Tomonari KURAYAMA
Ibaraki University
Teruyuki MIYAJIMA
Ibaraki University
Yoshiki SUGITANI
Ibaraki University
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
부
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
부
@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},}
부
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 -