@article{3034977,
    title = "Α dual-hop equivalent structure of a generalised multi-hop free-space optics network",
    author = "Androutsos, N.A. and Nistazakis, H.E. and Sandalidis, H.G. and Leitgeb, E. and Tombras, G.S.",
    journal = "IET Communications",
    year = "2021",
    volume = "15",
    number = "5",
    pages = "730-735",
    publisher = "John Wiley and Sons Inc",
    issn = "1751-8628, 1751-8636",
    doi = "10.1049/cmu2.12115",
    keywords = "Atmospheric turbulence;  Deterioration;  Scintillation;  Space optics;  Turbulence models, Average bit-error rates;  Free space optics;  Free-space optical;  Mathematical derivation;  Multihop;  Outage probability;  Performance analysis, Bit error rate",
    abstract = "The performance of free-space optics links strongly depends on scintillation effects caused by the atmospheric turbulence appearance. A widely adopted way to counterbalance the expected deterioration due to scintillation is to employ cooperative and multi-hop arrangements. However, the use of multiple relays increases significantly the complexity of the mathematical models used to describe the overall performance of the system. Taking the latter into account, we approximate a generic multiple relay-assisted free-space optical configuration with a dual-hop link in order to simplify the performance analysis. To this end, we provide new mathematical derivations for the evaluation of the outage probability and the average bit error rate by assuming typical turbulence models. © 2021 The Authors. IET Communications published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology"
}