Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation
Free-space optical (FSO) links are considered as cost-effective, noninvasive alternative to fiber optic cables for 5G cellular backhaul networking. For FSO-based backhaul networks, we propose an additional millimeter-wavelength (MMW) radio-frequency (RF)-FSO link, used as a backup. Uninterrupted and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8360015/ |
| _version_ | 1818408418764914688 |
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| author | Banibrata Bag Akinchan Das Imran Shafique Ansari Ales Prokes Chayanika Bose Aniruddha Chandra |
| author_facet | Banibrata Bag Akinchan Das Imran Shafique Ansari Ales Prokes Chayanika Bose Aniruddha Chandra |
| author_sort | Banibrata Bag |
| collection | DOAJ |
| description | Free-space optical (FSO) links are considered as cost-effective, noninvasive alternative to fiber optic cables for 5G cellular backhaul networking. For FSO-based backhaul networks, we propose an additional millimeter-wavelength (MMW) radio-frequency (RF)-FSO link, used as a backup. Uninterrupted and reliable network connection is possible by switching between primary FSO link and the secondary RF-FSO link; when the primary link is under atmospheric turbulence, the secondary link maintains connectivity as the MMW RF link exhibits complementary characteristics to atmospheric effects. In order to analytically assess the improvement, we also derive concise mathematical expressions for different performance metrics, such as outage probability, average bit error rate (BER), and capacity. Our results demonstrate that the FSO/RF-FSO topology performs better than a single FSO link in terms of outage probability and BER. The dual-hop mixed RF-FSO link is realized with an amplify and forward (AF) relay that adapts an average power scaling strategy. The irradiance fluctuations in the FSO links are modeled by gamma-gamma distribution, assuming strong atmospheric turbulence while it is assumed that the RF link experiences multipath Rayleigh fading. For switching between links, a single FSO threshold is considered first, followed by a dual FSO threshold to prevent unnecessary switching. |
| first_indexed | 2024-12-14T09:43:25Z |
| format | Article |
| id | doaj.art-053bda4c537849f2887167b1ad436e80 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-14T09:43:25Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-053bda4c537849f2887167b1ad436e802022-12-21T23:07:44ZengIEEEIEEE Photonics Journal1943-06552018-01-0110311710.1109/JPHOT.2018.28373568360015Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link AdaptationBanibrata Bag0https://orcid.org/0000-0003-0167-515XAkinchan Das1https://orcid.org/0000-0001-9767-771XImran Shafique Ansari2https://orcid.org/0000-0001-8461-6547Ales Prokes3Chayanika Bose4Aniruddha Chandra5https://orcid.org/0000-0002-9247-9009Haldia Institute of Technology, Haldia, IndiaHaldia Institute of Technology, Haldia, IndiaGlobal College of Engineering and Technology, Muscat, OmanBrno University of Technology, Brno, Czech RepublicJadavpur University, Kolkata, IndiaNational Institute of Technology, Durgapur, IndiaFree-space optical (FSO) links are considered as cost-effective, noninvasive alternative to fiber optic cables for 5G cellular backhaul networking. For FSO-based backhaul networks, we propose an additional millimeter-wavelength (MMW) radio-frequency (RF)-FSO link, used as a backup. Uninterrupted and reliable network connection is possible by switching between primary FSO link and the secondary RF-FSO link; when the primary link is under atmospheric turbulence, the secondary link maintains connectivity as the MMW RF link exhibits complementary characteristics to atmospheric effects. In order to analytically assess the improvement, we also derive concise mathematical expressions for different performance metrics, such as outage probability, average bit error rate (BER), and capacity. Our results demonstrate that the FSO/RF-FSO topology performs better than a single FSO link in terms of outage probability and BER. The dual-hop mixed RF-FSO link is realized with an amplify and forward (AF) relay that adapts an average power scaling strategy. The irradiance fluctuations in the FSO links are modeled by gamma-gamma distribution, assuming strong atmospheric turbulence while it is assumed that the RF link experiences multipath Rayleigh fading. For switching between links, a single FSO threshold is considered first, followed by a dual FSO threshold to prevent unnecessary switching.https://ieeexplore.ieee.org/document/8360015/Free-space optics5G cellular backhaulgamma-gamma fadingbackup RF-FSO linkamplify-and-forward relaylink switching probability. |
| spellingShingle | Banibrata Bag Akinchan Das Imran Shafique Ansari Ales Prokes Chayanika Bose Aniruddha Chandra Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation IEEE Photonics Journal Free-space optics 5G cellular backhaul gamma-gamma fading backup RF-FSO link amplify-and-forward relay link switching probability. |
| title | Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation |
| title_full | Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation |
| title_fullStr | Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation |
| title_full_unstemmed | Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation |
| title_short | Performance Analysis of Hybrid FSO Systems Using FSO/RF-FSO Link Adaptation |
| title_sort | performance analysis of hybrid fso systems using fso rf fso link adaptation |
| topic | Free-space optics 5G cellular backhaul gamma-gamma fading backup RF-FSO link amplify-and-forward relay link switching probability. |
| url | https://ieeexplore.ieee.org/document/8360015/ |
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