Research on Degree Distribution Optimization of LT Codes
LT code, as a channel coding scheme with good adaptability to the channel, has a stable performance in data transmission of underwater acoustic communication. In the case of large decoding overhead, the LT code can reach the ideal bit error rate(BER), but when the length of the encoded data is short...
| Format: | Article |
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| Language: | zho |
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EDP Sciences
2020-06-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2020/03/jnwpu2020383p627/jnwpu2020383p627.html |
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| collection | DOAJ |
| description | LT code, as a channel coding scheme with good adaptability to the channel, has a stable performance in data transmission of underwater acoustic communication. In the case of large decoding overhead, the LT code can reach the ideal bit error rate(BER), but when the length of the encoded data is short, its coding and decoding performance is not ideal. LT code was applied to underwater acoustic communication by combining with orthogonal frequency division multiplexing (OFDM), and a LT-OFDM system was constructed. To improve the performance of LT code in the case of short code length, a method for degree distribution optimization was proposed on the objective of minimizing BER and minimizing average coding degree. Simulation and sea trial results show that under the same BER this method can optimize the system, transform 7%-22% conversion, and reduce the complexity of coding and decoding. |
| first_indexed | 2024-03-11T14:08:18Z |
| format | Article |
| id | doaj.art-7d10180668f6414c88f9336d0f227ff1 |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-11T14:08:18Z |
| publishDate | 2020-06-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-7d10180668f6414c88f9336d0f227ff12023-11-02T01:17:46ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252020-06-0138362763310.1051/jnwpu/20203830627jnwpu2020383p627Research on Degree Distribution Optimization of LT Codes01234School of Electronic Science and Engineering, Xiamen UniversitySoutheast University, School of Economics and ManagementSchool of Informatics, Xiamen UniversitySchool of Electronic Science and Engineering, Xiamen UniversitySchool of Informatics, Xiamen UniversityLT code, as a channel coding scheme with good adaptability to the channel, has a stable performance in data transmission of underwater acoustic communication. In the case of large decoding overhead, the LT code can reach the ideal bit error rate(BER), but when the length of the encoded data is short, its coding and decoding performance is not ideal. LT code was applied to underwater acoustic communication by combining with orthogonal frequency division multiplexing (OFDM), and a LT-OFDM system was constructed. To improve the performance of LT code in the case of short code length, a method for degree distribution optimization was proposed on the objective of minimizing BER and minimizing average coding degree. Simulation and sea trial results show that under the same BER this method can optimize the system, transform 7%-22% conversion, and reduce the complexity of coding and decoding.https://www.jnwpu.org/articles/jnwpu/full_html/2020/03/jnwpu2020383p627/jnwpu2020383p627.htmllt codeorthogonal frequency division multiplexing(ofdm)underwater acoustic communicationdegree distribution |
| spellingShingle | Research on Degree Distribution Optimization of LT Codes Xibei Gongye Daxue Xuebao lt code orthogonal frequency division multiplexing(ofdm) underwater acoustic communication degree distribution |
| title | Research on Degree Distribution Optimization of LT Codes |
| title_full | Research on Degree Distribution Optimization of LT Codes |
| title_fullStr | Research on Degree Distribution Optimization of LT Codes |
| title_full_unstemmed | Research on Degree Distribution Optimization of LT Codes |
| title_short | Research on Degree Distribution Optimization of LT Codes |
| title_sort | research on degree distribution optimization of lt codes |
| topic | lt code orthogonal frequency division multiplexing(ofdm) underwater acoustic communication degree distribution |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2020/03/jnwpu2020383p627/jnwpu2020383p627.html |