Stacked Intelligent Metasurface–Assisted Fluid Antenna Systems: Outage Probability
Abstract
Stacked intelligent metasurfaces (SIMs) and fluid antenna systems (FAS) are emerging technologies for wave-domain and spatial signal manipulation, respectively. This letter proposes a novel joint SIM–FAS communication model in which transmission and reception are performed by a SIM and an FAS, respectively. Using the block-diagonal matrix approximation (BDMA), a closed-form expression for the outage probability is derived, and the SIM phase shifts are optimized to minimize outage. Numerical results validate the analytical accuracy and demonstrate substantial performance gains over conventional benchmark schemes.
Fields of Study & Subjects
Advanced Antenna and Metasurface Technologies
Antenna Design and Analysis
Advanced Wireless Communication Technologies
Publication details
- Journal / source
- IEEE Signal Processing Letters
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Volume
- 33
- Pages
- 2290–2294
- Publication date
- 1 January 2026