Design and Evaluation in FAMA over Nakagami-m Fading Channel
11th International Conference on Recent Advances in Air and Space Technologies, Conference Program, RAST 2026, İstanbul, Türkiye, 13 - 15 Mayıs 2026, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/rast69551.2026.11672310
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Anahtar Kelimeler: FAMA, Nakagami-m fading, outage probability, port selection
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
Fluid antenna multiple access (FAMA) enables dynamic spatial reconfiguration of antenna ports, providing improved spectral efficiency and enhanced interference mitigation in next-generation wireless systems. This paper presents a unified analytical framework for optimal port selection in FAMA systems under correlated Nakagami-m fading. In contrast to existing studies primarily focused on Rayleigh fading, the proposed model incorporates both spatial correlation and fading severity, enabling a more realistic characterization of channel behavior.A dual-probe posterior signal-to-noise ratio (DP-PSNR) based port selection scheme is introduced using LMMSE estimation, resulting in a correlation-aware and observation-driven selection mechanism that is robust to noisy and incomplete channel measurements. Closed-form and semi-analytical outage probability expressions are derived by integrating the Nakagami-m distribution with a block-correlated channel structure. The proposed framework is evaluated for both slow FAMA (s-FAMA) and fast FAMA (f-FAMA) architectures, revealing the impact of spatial and temporal diversity on system performance. Numerical results demonstrate that increasing the fading parameter m improves outage resilience and enhances selection reliability.Furthermore, These characteristics enable the application of the proposed framework to aerospace communication scenarios, including UAV networks, satellite links, and aeronautical systems. Where compact antenna structures and rapidly varying channels necessitate adaptive and correlation-aware transmission strategies.