Closed-form expression; Efficiency gain; Energy; Energy efficiency metrics; Energy efficient technology; Fixed numbers; L spaces; Reconfigurable; Spectrum efficient; Wireless communications networks; Electrical and Electronic Engineering; Computer Science Applications; Information Systems
Abstract :
[en] Reconfigurable intelligent surfaces (RISs) have emerged as a spectrum-and energy-efficient technology to enhance the wireless communication networks. Recently, novel extensions of this technology referred to as multi-sector beyond diagonal RIS (BD-RIS) are proposed, where the configurable elements are divided into L (L ≥ 2) sectors and arranged as a polygon prism with each sector covering 1/L space. In this paper, we investigate the spectral and energy efficiency metrics of a network enhanced with a multi-sector BD-RIS. We derive closed-form expressions for the overall achievable spectral and energy efficiency and substantiate our analysis through simulations. The results demonstrate that, for a fixed number of configurable elements, increasing the number of sectors (and consequently reducing the elements per sector) leads to significant improvements in both spectral and energy efficiency gains compared to a configuration with fewer sectors but more elements per sector. In particular, our numerical results show a remarkable 138% improvement in energy efficiency when transitioning from a 2-sector to a 6-sector configuration.
Disciplines :
Electrical & electronics engineering
Author, co-author :
SAMY, Mostafa ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Adam, Abuzar B. M.; University of Luxembourg, Interdisciplinary Centre for Security, Reliability and Trust (SnT), Luxembourg
NTONTIN, Konstantinos ; 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
CHATZINOTAS, Symeon ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Otteresten, Bjorn; University of Luxembourg, Interdisciplinary Centre for Security, Reliability and Trust (SnT), Luxembourg
External co-authors :
no
Language :
English
Title :
Enhancing Spectral and Energy Efficiency with Multi-Sector Beyond-Diagonal RIS
Publication date :
2024
Event name :
2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Event place :
Lucca, Ita
Event date :
10-09-2024 => 13-09-2024
By request :
Yes
Main work title :
2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2024
Publisher :
Institute of Electrical and Electronics Engineers Inc.
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