Efficient encoding scheme for LT codes with soft iterative decoding.
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| Title: | Efficient encoding scheme for LT codes with soft iterative decoding. |
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| Authors: | Meixiang Zhang1, Sooyoung Kim2 sookim@jbnu.ac.kr |
| Source: | IET Communications (Wiley-Blackwell). 2018, Vol. 12 Issue 13, p1624-1629. 6p. |
| Subjects: | Luby transform codes, Iterative decoding, Bit error rate, Decoding algorithms, Iterative methods (Mathematics) |
| Abstract: | The Luby transform (LT) code is the first practical implementation of the digital fountain code, and its utilisation over a noisy channel invokes iterative decoding with soft information. For a good decoding performance, the role of the encoder degree distribution is vital. Especially, when utilising the soft iterative decoder, the bit error rate (BER) performance of the LT code can be improved by increasing the number of the degree-1 encoding nodes and reducing the number of lower-degree variable nodes. This study proposes an efficient LT-code encoding algorithm that satisfies the conditions for improving the BER performance. The proposed scheme applies different priorities for selecting the neighbouring source nodes for given degrees of the encoding nodes. The simulation results demonstrate that the proposed scheme outperforms the existing schemes. [ABSTRACT FROM AUTHOR] |
| Copyright of IET Communications (Wiley-Blackwell) is the property of Wiley-Blackwell 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: 131347716 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Efficient encoding scheme for LT codes with soft iterative decoding. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Meixiang+Zhang%22">Meixiang Zhang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sooyoung+Kim%22">Sooyoung Kim</searchLink><relatesTo>2</relatesTo><i> sookim@jbnu.ac.kr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22IET+Communications+%28Wiley-Blackwell%29%22">IET Communications (Wiley-Blackwell)</searchLink>. 2018, Vol. 12 Issue 13, p1624-1629. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Luby+transform+codes%22">Luby transform codes</searchLink><br /><searchLink fieldCode="DE" term="%22Iterative+decoding%22">Iterative decoding</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="%22Iterative+methods+%28Mathematics%29%22">Iterative methods (Mathematics)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The Luby transform (LT) code is the first practical implementation of the digital fountain code, and its utilisation over a noisy channel invokes iterative decoding with soft information. For a good decoding performance, the role of the encoder degree distribution is vital. Especially, when utilising the soft iterative decoder, the bit error rate (BER) performance of the LT code can be improved by increasing the number of the degree-1 encoding nodes and reducing the number of lower-degree variable nodes. This study proposes an efficient LT-code encoding algorithm that satisfies the conditions for improving the BER performance. The proposed scheme applies different priorities for selecting the neighbouring source nodes for given degrees of the encoding nodes. The simulation results demonstrate that the proposed scheme outperforms the existing schemes. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of IET Communications (Wiley-Blackwell) is the property of Wiley-Blackwell 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: 10.1049/iet-com.2018.0064 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 1624 Subjects: – SubjectFull: Luby transform codes Type: general – SubjectFull: Iterative decoding Type: general – SubjectFull: Bit error rate Type: general – SubjectFull: Decoding algorithms Type: general – SubjectFull: Iterative methods (Mathematics) Type: general Titles: – TitleFull: Efficient encoding scheme for LT codes with soft iterative decoding. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Meixiang Zhang – PersonEntity: Name: NameFull: Sooyoung Kim IsPartOfRelationships: – BibEntity: Dates: – D: 14 M: 08 Text: 2018 Type: published Y: 2018 Identifiers: – Type: issn-print Value: 17518628 Numbering: – Type: volume Value: 12 – Type: issue Value: 13 Titles: – TitleFull: IET Communications (Wiley-Blackwell) Type: main |
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