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论文:2017,Vol:35,Issue(3):523-527 |
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引用本文： |
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徐娟, 姚如贵, 高凡琪, 陆亚南. 改善3D-Turbo码错误平台性能的不规则抽取方案设计研究[J]. 西北工业大学学报 |
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Xu Juan, Yao Rugui, Gao Fanqi, Lu Ya'nan. Irregular Pattern Design to Improve Error Floor for 3D-Turbo Codes[J]. Northwestern polytechnical university |
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| 改善3D-Turbo码错误平台性能的不规则抽取方案设计研究 |
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| 徐娟1, 姚如贵2, 高凡琪2, 陆亚南2 |
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1. 长安大学 电控学院, 陕西 西安 710064;
2. 西北工业大学 电子信息学院, 陕西 西安 710072 |
| 摘要: |
| 针对3D-Turbo码中仍然存在的低码重码字，以全零迭代译码算法作为码字距离谱分析工具，识别低码重信息比特和校验比特中"1"的分布，优化设计不规则抽取模式，进一步提高最小汉明距离，进而改善错误平台性能。最后，以一种3D-Turbo码为实例，利用文中所提的改进抽取方式，将最小码重从18提高到20，证明了改进抽取方案的有效性。 |
| 关键词:
信道编码
错误平台
迭代译码
汉明距离
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| Irregular Pattern Design to Improve Error Floor for 3D-Turbo Codes |
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| Xu Juan1, Yao Rugui2, Gao Fanqi2, Lu Ya'nan2 |
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1. School of Electronic and Control Engineering, Chang'an University, Xi'an 710064, China;
2. School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| In 3D-Turbo codes, part of parity bits from conventional Turbo encoder are encoded again by a post-encoder to reduce the number of low-weight codes and achieve better error floor performance. Considering the residual low-weight codes in 3D-Turbo codes, an irregular pattern design is proposed to further improve the error floor. All-zero iterative decoding algorithm is firstly utilized to identify the distribution of "1" in low-weight codes. Then an irregular pattern is optimized based on the distribution to eliminate low-weight codes. Finally, taking a practical 3D-Turbo codes, we adopt the proposed irregular pattern to increase the minimum Hamming distance from 18 to 20, which validates the effectiveness of our contribution. |
| Key words:
channel coding
error floor
iterative decoding
Hamming distance
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| 收稿日期: 2016-10-17
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金（61501376）、中央高校基本科研业务费专项基金（3102016ZY020、310832151095）和陕西省留学人员科技活动择优资助项目（W021004）资助 |
| 通讯作者:
Email： |
| 作者简介: 徐娟(1980-),女,长安大学副教授、博士,主要从事无线通信技术、通信与导航抗干扰研究。
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参考文献: |
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