Enhancing free-space optical communication networks using Generalized Low Density Parity Check codes.
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| Title: | Enhancing free-space optical communication networks using Generalized Low Density Parity Check codes. |
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| Authors: | Youssef, Albashir A.1 (AUTHOR) albashir.adel@aast.edu, Elsanadily, Sherif I.2 (AUTHOR) sherif.elsanadily@eaeat-academy.edu.eg |
| Source: | Optics & Laser Technology. Feb2025:Part C, Vol. 181, pN.PAG-N.PAG. 1p. |
| Subjects: | Low density parity check codes, Bit error rate, Decoding algorithms, Channel coding, Telecommunication systems, Free-space optical technology |
| Abstract: | Free Space Optical (FSO) communications gained impressive adoption in the research society. The high data rate, unlicensed frequency bandwidth, low cost, and immense security of FSO systems influence this much attention. Due to these benefits, FSO can fit into various communication system applications. Atmospheric turbulence (AT) is the main channel impairment faced by the FSO links, which affects their efficiency. Atmospheric turbulence existed due to haphazard variations of the air refractive index within communication duration. Several mathematical models are used to characterize the AT. The Log-Normal (LN) model exhibits weak and moderate turbulence, while for strong turbulence, the Gamma–Gamma (G-G) model is employed. The effects of geometric losses, weather attenuation, and misalignment errors are accounted for by maintaining the later models. So, the best candidate solution for enhancing FSO communication link performance is channel coding algorithms like Generalized Low-Density Parity Check (GLDPC) codes. This paper proposes a new FSO system that utilizes two novel GLDPC decoders to enhance the performance of the FSO communication channels and reduce its impairments. To demonstrate the effect of the proposed system on preserving cutting-edge GLDPC coding algorithms, all factors influencing FSO communications are also assessed. To evaluate the bit error rate (BER) of the proposed system combined with novel GLDPC decoders, the number of consumed iterations, dissipated decoding time, extracted throughput, and convergence of decoders are maintained. The findings demonstrated that, in the case of FSO communication channels, the new GLDPC decoding algorithms in the proposed system performed better than the current ones across all comparison points used in this investigation. [ABSTRACT FROM AUTHOR] |
| Copyright of Optics & Laser Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 181112072 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Enhancing free-space optical communication networks using Generalized Low Density Parity Check codes. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Youssef%2C+Albashir+A%2E%22">Youssef, Albashir A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> albashir.adel@aast.edu</i><br /><searchLink fieldCode="AR" term="%22Elsanadily%2C+Sherif+I%2E%22">Elsanadily, Sherif I.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> sherif.elsanadily@eaeat-academy.edu.eg</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Optics+%26+Laser+Technology%22">Optics & Laser Technology</searchLink>. Feb2025:Part C, Vol. 181, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Low+density+parity+check+codes%22">Low density parity check codes</searchLink><br /><searchLink fieldCode="DE" term="%22Bit+error+rate%22">Bit error rate</searchLink><br /><searchLink fieldCode="DE" term="%22Decoding+algorithms%22">Decoding algorithms</searchLink><br /><searchLink fieldCode="DE" term="%22Channel+coding%22">Channel coding</searchLink><br /><searchLink fieldCode="DE" term="%22Telecommunication+systems%22">Telecommunication systems</searchLink><br /><searchLink fieldCode="DE" term="%22Free-space+optical+technology%22">Free-space optical technology</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Free Space Optical (FSO) communications gained impressive adoption in the research society. The high data rate, unlicensed frequency bandwidth, low cost, and immense security of FSO systems influence this much attention. Due to these benefits, FSO can fit into various communication system applications. Atmospheric turbulence (AT) is the main channel impairment faced by the FSO links, which affects their efficiency. Atmospheric turbulence existed due to haphazard variations of the air refractive index within communication duration. Several mathematical models are used to characterize the AT. The Log-Normal (LN) model exhibits weak and moderate turbulence, while for strong turbulence, the Gamma–Gamma (G-G) model is employed. The effects of geometric losses, weather attenuation, and misalignment errors are accounted for by maintaining the later models. So, the best candidate solution for enhancing FSO communication link performance is channel coding algorithms like Generalized Low-Density Parity Check (GLDPC) codes. This paper proposes a new FSO system that utilizes two novel GLDPC decoders to enhance the performance of the FSO communication channels and reduce its impairments. To demonstrate the effect of the proposed system on preserving cutting-edge GLDPC coding algorithms, all factors influencing FSO communications are also assessed. To evaluate the bit error rate (BER) of the proposed system combined with novel GLDPC decoders, the number of consumed iterations, dissipated decoding time, extracted throughput, and convergence of decoders are maintained. The findings demonstrated that, in the case of FSO communication channels, the new GLDPC decoding algorithms in the proposed system performed better than the current ones across all comparison points used in this investigation. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Optics & Laser Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.optlastec.2024.111862 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Low density parity check codes Type: general – SubjectFull: Bit error rate Type: general – SubjectFull: Decoding algorithms Type: general – SubjectFull: Channel coding Type: general – SubjectFull: Telecommunication systems Type: general – SubjectFull: Free-space optical technology Type: general Titles: – TitleFull: Enhancing free-space optical communication networks using Generalized Low Density Parity Check codes. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Youssef, Albashir A. – PersonEntity: Name: NameFull: Elsanadily, Sherif I. IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 02 Text: Feb2025:Part C Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00303992 Numbering: – Type: volume Value: 181 Titles: – TitleFull: Optics & Laser Technology Type: main |
| ResultId | 1 |
