Link range optimisation for detection methods under scintillation effects on FSO system

• Autorzy: Sowmyaa Vathsan M. S. , Prakash P. , Kasthuri P. , Sasithradevi A.

Identyfikatory

DOI

10.24425/opelre.2025.154745

• Języki publikacji: EN

Abstrakty

EN

Free-space optical (FSO) communication is a promising technology that aims to solve the problem of limited bandwidth in modern cellular communication systems. This work investigates the FSO communication systems under varying atmospheric conditions using direct, Mach-Zehnder interferometer (MZI), and coherent detection methods. A detailed analysis evaluates their trade-offs in cost, complexity, and performance. Results indicate that coherent detection achieves the highest link range with an optimal bit error rate (BER) across all turbulence regimes, with maximum feasible ranges of 7.4 km, 6.6 km, and 6.5 km under weak, moderate, and strong scintillation, respectively. Further, optimising local oscillator (LO) power significantly improves system reliability under strong turbulence, enabling robust communication. This study highlights the advantages of coherent detection for FSO systems, particularly in strong scintillation regimes which provide better receiver sensitivity and link range coverage.

Słowa kluczowe

EN

coherent detection; free-space optical communication; optical communication; quadratic phase shift keying; scintillation

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2025
• Tom: Vol. 33, No. 2
• Strony: art. no. e154745
• Opis fizyczny: Bibliogr. 36 poz., rys., tab., wykr.

Twórcy

autor

Sowmyaa Vathsan M. S.

• Department of Electronics Engineering, MIT Campus, Anna University, Chennai, 600044-Tamil Nadu, India

• https://orcid.org/0000-0002-1769-3320

autor

Prakash P.

• Department of Electronics Engineering, MIT Campus, Anna University, Chennai, 600044-Tamil Nadu, India

• https://orcid.org/0000-0002-7534-6925

autor

Kasthuri P.

• Department of Electronics Engineering, MIT Campus, Anna University, Chennai, 600044-Tamil Nadu, India

autor

Sasithradevi A.

• Centre for Advanced Data Science, Vellore Institute of Technology, Chennai, 600127-Tamil Nadu, India

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).