On the Capacity of Decode-and-Forward FSO System With Single- and Dual-Hop RF Link
In this study, we consider two dual-hop FSO systems with decode-and-forward protocol. The FSO system is assumed to be equipped with RF link used as a backup in case the FSO link experiences strong atmospheric turbulence or pointing errors. The two system models differ by the setup of the RF link. A...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10360195/ |
| _version_ | 1827186779410661376 |
|---|---|
| author | Essam Saleh Altubaishi Wagdy Ameen Alathwary |
| author_facet | Essam Saleh Altubaishi Wagdy Ameen Alathwary |
| author_sort | Essam Saleh Altubaishi |
| collection | DOAJ |
| description | In this study, we consider two dual-hop FSO systems with decode-and-forward protocol. The FSO system is assumed to be equipped with RF link used as a backup in case the FSO link experiences strong atmospheric turbulence or pointing errors. The two system models differ by the setup of the RF link. A single-hop RF backup link is used for the first system model, whereas a dual-hop RF backup link is used for the second system model. We assume that the FSO system uses intensity modulation with direct detection and the channel is modeled by gamma-gamma distribution, and the RF channel is modeled by Nakagami-m distribution. The performance of both system models is studied in terms of ergodic capacity where new expressions are derived and compared with the results of Monte Carlo simulations. The results indicate the improvement of the spectral efficiency compared to the conventional dual-hop FSO system. |
| first_indexed | 2024-03-08T18:03:01Z |
| format | Article |
| id | doaj.art-11bb2688d0e9483886d3e41ef8758711 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2025-03-21T07:11:42Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-11bb2688d0e9483886d3e41ef87587112024-07-16T23:00:06ZengIEEEIEEE Photonics Journal1943-06552024-01-011611810.1109/JPHOT.2023.334108010360195On the Capacity of Decode-and-Forward FSO System With Single- and Dual-Hop RF LinkEssam Saleh Altubaishi0https://orcid.org/0000-0003-1422-8383Wagdy Ameen Alathwary1https://orcid.org/0000-0001-9635-3190Department of Electrical Engineering, King Saud University, Riyadh, Saudi ArabiaDepartment of Electrical Engineering, King Saud University, Riyadh, Saudi ArabiaIn this study, we consider two dual-hop FSO systems with decode-and-forward protocol. The FSO system is assumed to be equipped with RF link used as a backup in case the FSO link experiences strong atmospheric turbulence or pointing errors. The two system models differ by the setup of the RF link. A single-hop RF backup link is used for the first system model, whereas a dual-hop RF backup link is used for the second system model. We assume that the FSO system uses intensity modulation with direct detection and the channel is modeled by gamma-gamma distribution, and the RF channel is modeled by Nakagami-m distribution. The performance of both system models is studied in terms of ergodic capacity where new expressions are derived and compared with the results of Monte Carlo simulations. The results indicate the improvement of the spectral efficiency compared to the conventional dual-hop FSO system.https://ieeexplore.ieee.org/document/10360195/Free space opticshybrid systemstrong atmospheric turbulenceaverage capacity |
| spellingShingle | Essam Saleh Altubaishi Wagdy Ameen Alathwary On the Capacity of Decode-and-Forward FSO System With Single- and Dual-Hop RF Link IEEE Photonics Journal Free space optics hybrid system strong atmospheric turbulence average capacity |
| title | On the Capacity of Decode-and-Forward FSO System With Single- and Dual-Hop RF Link |
| title_full | On the Capacity of Decode-and-Forward FSO System With Single- and Dual-Hop RF Link |
| title_fullStr | On the Capacity of Decode-and-Forward FSO System With Single- and Dual-Hop RF Link |
| title_full_unstemmed | On the Capacity of Decode-and-Forward FSO System With Single- and Dual-Hop RF Link |
| title_short | On the Capacity of Decode-and-Forward FSO System With Single- and Dual-Hop RF Link |
| title_sort | on the capacity of decode and forward fso system with single and dual hop rf link |
| topic | Free space optics hybrid system strong atmospheric turbulence average capacity |
| url | https://ieeexplore.ieee.org/document/10360195/ |
| work_keys_str_mv | AT essamsalehaltubaishi onthecapacityofdecodeandforwardfsosystemwithsingleanddualhoprflink AT wagdyameenalathwary onthecapacityofdecodeandforwardfsosystemwithsingleanddualhoprflink |