RIS-Empowered Relays for Cooperative NOMA

Cell edges; Communication reliabilities; Decode-and-forward relaying; Multiple access; Non-orthogonal; Non-orthogonal multiple access transmissions; Performance; Reconfigurable; Relaying schemes; Signal reception; Engineering (all)

Abstract :

[en] To harness the benefits of non-orthogonal multiple access (NOMA) and reconfigurable intelligent surfaces (RISs), we propose a novel RIS-empowered decode-and-forward (RIS-DF) relaying scheme tailored to cooperative NOMA transmissions. This integration is a promising direction for improving communication reliability, extending coverage, and enhancing the overall performance in sixth-generation (6G) wireless networks. This paper focuses on enhancing signal reception of the cell-edge users with weak channel conditions by deploying multiple RISs within cooperative NOMA systems. In this setting, we investigate system outage performance and derive closed-form analytical expressions for both cooperative NOMA and its orthogonal mul-tiple access (OMA) counterpart, which is used as a benchmark for comparison. To validate the proposed solutions, numerical results are provided to demonstrate the performance gains of the proposed scheme compared to the existing conventional DF relays developed for cooperative NOMA. Further, the impact of RIS placement within the system on performance is also examined, offering useful practical design insights.

Disciplines :

Electrical & electronics engineering

Author, co-author :

SAMY, Mostafa ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

AL-HRAISHAWI, Hayder ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust > SigCom > Team Symeon CHATZINOTAS

NTONTIN, Konstantinos ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

Otteresten, Björn; University Of Luxembourg, Interdisciplinary Centre For Security, Reliability And Trust (SnT), Luxembourg

External co-authors :

Language :

English

Title :

RIS-Empowered Relays for Cooperative NOMA

Publication date :

24 April 2024

Event name :

2024 IEEE Wireless Communications and Networking Conference (WCNC)

Event place :

Dubai, United Arab Emirates

Event date :

21-04-2024 => 24-04-2024

By request :

Yes

Main work title :

2024 IEEE Wireless Communications and Networking Conference, WCNC 2024 - Proceedings

Publisher :

Institute of Electrical and Electronics Engineers Inc.

ISBN/EAN :

9798350303582

Peer reviewed :

Peer reviewed

Additional URL :

http://xplorestaging.ieee.org/ielx8/10570463/10570502/10570563.pdf?arnumber=10570563

Funding text :

This work was supported by the Luxembourg National Research Fund (FNR) through the AFR Project CEP-MBD-CRIS, Grant reference 17974844.

Available on ORBilu :

since 20 November 2024

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Bibliography

While perfect CSI is not achievable in practice, this work focuses on theoretically evaluating the proposed system performance in order to understand its theoretical limits.
Y. Saito, Y. Kishiyama et al., "Non-orthogonal multiple access (NOMA) for cellular future radio access, " in IEEE Veh. Technol. Conf. (VTC Spring), Jun. 2013, pp. 1-5.
A. Anwar, B.-C. Seet et al., "Quality of service based NOMA group D2D communications, " Future Internet, vol. 9, no. 4, p. 73, 2017.
Z. Ding, H. Dai et al., "Relay selection for cooperative NOMA, " IEEE Wireless Commun. Lett., vol. 5, no. 4, pp. 416-419, Aug. 2016.
Z. Ding, M. Peng et al., "Cooperative non-orthogonal multiple access in 5G systems, " IEEE Commun. Lett., vol. 19, no. 8, pp. 1462-1465, Aug. 2015.
M. Zeng, W. Hao et al., "Cooperative NOMA: State of the art, key techniques, and open challenges, " IEEE Netw., vol. 34, no. 5, pp. 205-211, Jul. 2020.
E. Basar, M. Di Renzo et al., "Wireless communications through reconfigurable intelligent surfaces, " IEEE Access, vol. 7, pp. 116 753-116 773, Feb. 2019.
Q. Wu and R. Zhang, "Towards smart and reconfigurable environment: Intelligent reflecting surface aided wireless network, " IEEE Commun. Mag., vol. 58, no. 1, pp. 106-112, Jan. 2020.
T. Hou, Y. Liu et al., "Reconfigurable intelligent surface aided NOMA networks, " IEEE J. Sel. Areas Commun., vol. 38, no. 11, pp. 2575-2588, Jul. 2020.
Z. Yang, J. Shi et al., "Energy efficient rate splitting multiple access (RSMA) with reconfigurable intelligent surface, " in IEEE Int. Conf. Commun. Workshops (ICC Workshops), Jul. 2020, pp. 1-6.
Q. Liu, M. Lu et al., "Joint beamforming and power splitting optimization for RIS-assited cooperative SWIPT NOMA systems, " in IEEE Wireless Commun. Netw. Conf. (WCNC), May 2022, pp. 351-356.
M. Elhattab, M. A. Arfaoui et al., "Reconfigurable intelligent surface enabled full-duplex/half-duplex cooperative non-orthogonal multiple access, " IEEE Trans. Wireless Commun., vol. 21, no. 5, pp. 3349-3364, May 2022.
J. Ren, X. Lei et al., "RIS-assisted cooperative NOMA with SWIPT, " IEEE Wireless Commun. Let., vol. 12, no. 3, pp. 446-450, Mar. 2023.
P. Xu, Z. Yang et al., "Optimal relay selection schemes for cooperative NOMA, " IEEE Trans. Veh. Technol., vol. 67, no. 8, pp. 7851-7855, Aug. 2018.
M. Samy, H. Al-Hraishawi et al., "Multiple RIS-assisted cooperative NOMA with user selection, " in IEEE Global Commun. Conf. GLOBECOM, Dec. 2023, pp. 3332-3337.
C. Wu, Y. Liu et al., "Coverage characterization of STAR-RIS networks: NOMA and OMA, " IEEE Commun. Lett., vol. 25, no. 9, pp. 3036-3040, 2021.
Z. Abdullah, G. Chen et al., "A hybrid relay and intelligent reflecting surface network and its ergodic performance analysis, " IEEE Wireless Commun. Lett., vol. 9, no. 10, pp. 1653-1657, Oct. 2020.
W. Feller et al., "An introduction to probability theory and its applications, " 1971.