STAR-RISs Versus Full-Duplex Decode-and-Forward Relaying: Which is Better?
Simultaneous transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) technology was recently proposed to address the issue of the limited coverage area of RISs. This technology is capable of providing reflection and refraction for signals towards both sides of the surface. This letter compares STAR-RIS, conventional RIS and traditional half-duplex (HD) and full-duplex (FD) decode-and-forward (DF) relaying in terms of the rate and energy efficiency (EE). The simulation results showed that large surfaces and very high rates are needed in STAR-RISs to outperform the HD- and FD-DF relaying, where the EE is maximized by minimizing the total power.
Authors
- Mahmoud Aldababsa (ORCID: https://orcid.org/0000-0001-8116-3853)
- Taissir Y. Elganimi (ORCID: https://orcid.org/0000-0002-2401-6264)
- Xingwang Li (ORCID: https://orcid.org/0000-0002-0907-6517)
- Mohamed‐Slim Alouini (ORCID: https://orcid.org/0000-0003-4827-1793)
Institutions
- King Fahd University of Petroleum and Minerals (SA)
- University of Tripoli (LY)
- İstanbul Nişantaşı Üniversitesi (TR)
- Henan Polytechnic University (CN)
- King Abdullah University of Science and Technology (SA)
Publication Details
- Journal
- IEEE Communications Letters
- Published
- 2025-08-26
- DOI
- https://doi.org/10.1109/lcomm.2025.3602930
- Primary Topic
- Full-Duplex Wireless Communications
- Type
- article
- Field-Weighted Citation Impact
- 0.00