Transmissive Beyond Diagonal RIS-Mounted LEO Communication for NOMA IoT Networks

KHAN, Wali Ullah; LAGUNAS, Eva; CHATZINOTAS, Symeon

doi:10.1109/WCNC61545.2025.10978690

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Transmissive Beyond Diagonal RIS-Mounted LEO Communication for NOMA IoT Networks

KHAN, Wali Ullah; LAGUNAS, Eva; CHATZINOTAS, Symeon

2025 • In 2025 IEEE Wireless Communications and Networking Conference, WCNC 2025

Peer reviewed

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https://hdl.handle.net/10993/65396

DOI
10.1109/WCNC61545.2025.10978690

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Keywords :

LEO satel-lite; NOMA communication; spectral efficiency optimization; Transmissive beyond diagonal RIS; Earth orbits; Efficiency optimization; Low earth orbit satel-lite; Multiple access communications; Non-orthogonal; Non-orthogonal multiple access communication; Reconfigurable; Spectral efficiencies; Spectral efficiency optimization; Transmissive beyond diagonal reconfigurable intelligent surface; Engineering (all)

Abstract :

[en] Reconfigurable Intelligent Surface (RIS) technology has emerged as a transformative solution for enhancing satellite networks in next-generation wireless communication. The integration of RIS in satellite networks addresses critical challenges such as limited spectrum resources and high path loss, making it an ideal candidate for next-generation Internet of Things (IoT) networks. This paper provides a new framework based on transmissive beyond diagonal RIS (T-BD-RIS) mounted low earth orbit (LEO) satellite networks with non-orthogonal multiple access (NOMA). The NOMA power allocation at LEO and phase shift design at T-BD-RIS are optimized to maximize the system's spectral efficiency. The optimization problem is formulated as non-convex, which is first transformed using successive convex approximation and then divided into two problems. A closed-form solution is obtained for LEO satellite transmit power using KKT conditions, and a semi-definite relaxation approach is adopted for the T-BD-RIS phase shift design. Numerical results are obtained based on Monte Carlo simulations, which demonstrate the advantages of T-BD-RIS in satellite networks.

Disciplines :

Computer science

Author, co-author :

KHAN, Wali Ullah ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

LAGUNAS, Eva ; 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

External co-authors :

Language :

English

Title :

Transmissive Beyond Diagonal RIS-Mounted LEO Communication for NOMA IoT Networks

Publication date :

2025

Event name :

2025 IEEE Wireless Communications and Networking Conference (WCNC)

Event place :

Milan, Italy

Event date :

From 24 to 27 march 2025

Main work title :

2025 IEEE Wireless Communications and Networking Conference, WCNC 2025

Publisher :

Institute of Electrical and Electronics Engineers Inc.

ISBN/EAN :

9798350368369

Peer reviewed :

Peer reviewed

Additional URL :

http://xplorestaging.ieee.org/ielx8/10978109/10978116/10978690.pdf?arnumber=10978690

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since 12 July 2025

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