Stacked Intelligent Metasurface–Assisted Fluid Antenna Systems: Outage Probability

Anastasios Papazafeiropoulos

doi:10.1109/LSP.2026.3696913

Stacked Intelligent Metasurface–Assisted Fluid Antenna Systems: Outage Probability

Anastasios Papazafeiropoulos

University of Hertfordshire

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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.

Original language	English
Pages (from-to)	2290-2294
Number of pages	5
Journal	IEEE Signal Processing Letters
Volume	33
DOIs	https://doi.org/10.1109/LSP.2026.3696913
Publication status	Published - 2026

Keywords

fluid antenna systems (FASs)
outage probability
Stacked intelligent metasurfaces (SIMs)

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10.1109/LSP.2026.3696913

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title = "Stacked Intelligent Metasurface{\textendash}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{\textendash}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.",

keywords = "fluid antenna systems (FASs), outage probability, Stacked intelligent metasurfaces (SIMs)",

author = "Anastasios Papazafeiropoulos",

note = "Publisher Copyright: {\textcopyright} 1994-2012 IEEE.",

year = "2026",

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T1 - Stacked Intelligent Metasurface–Assisted Fluid Antenna Systems

T2 - Outage Probability

AU - Papazafeiropoulos, Anastasios

PY - 2026

Y1 - 2026

N2 - 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.

AB - 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.

KW - fluid antenna systems (FASs)

KW - outage probability

KW - Stacked intelligent metasurfaces (SIMs)

UR - https://www.scopus.com/pages/publications/105040186830

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DO - 10.1109/LSP.2026.3696913

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SP - 2290

EP - 2294

JO - IEEE Signal Processing Letters

JF - IEEE Signal Processing Letters

ER -

Stacked Intelligent Metasurface–Assisted Fluid Antenna Systems: Outage Probability

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Keywords

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