[1]刘立军,谢红,解武.喷泉码中半随机生成法去短小环[J].应用科技,2015,42(01):41-44.[doi:10.3969/j.issn.1009671X.201404012]
 LIU Lijun,XIE Hong,XIE Wu.A semirandom generation method for removing the short ring of a fountain code[J].Applied science and technology,2015,42(01):41-44.[doi:10.3969/j.issn.1009671X.201404012]
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喷泉码中半随机生成法去短小环(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第42卷
期数:
2015年01期
页码:
41-44
栏目:
现代电子技术
出版日期:
2015-02-05

文章信息/Info

Title:
A semirandom generation method for removing the short ring of a fountain code
文章编号:
1009671X(2015)0104104
作者:
刘立军谢红解武
哈尔滨工程大学 信息与通信工程学院,黑龙江 哈尔滨 150001
Author(s):
LIU Lijun XIE Hong XIE Wu
College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001,China
关键词:
喷泉码LT码串行置信传播算法短小环半随机生成法
Keywords:
fountain code LT code serial belief propagation algorithm short ring semirandom generation method
分类号:
10.3969/j.issn.1009671X.201404012
DOI:
10.3969/j.issn.1009671X.201404012
文献标志码:
A
摘要:
分析了喷泉码中LT码的生成原理及影响译码性能的因素,生成矩阵中的短小环是影响编译码性能的主要因素,其中,长度为4的短小环对编译码的性能影响最大。提出了一种半随机生成法去除长度为4的短小环的方法。仿真结果表明:去除长度为4的短小环之后,明显改善了喷泉码的性能,降低了译码复杂度,提高了系统性能。
Abstract:
The generation principle and factors affecting decoding performance of LT codes in a fountain code were analyzed, and it was found the short ring of the generator matrix is a major factor affecting the performance of the encoding and decoding, among which a short ring whose length is 4 has the biggest impact on encoding and decoding performance. This article presents a semirandom generation method for removing the short ring with a length of 4. Simulation results show that the removal of the short ring with a length of 4 significantly improves the performance of the fountain codes, reduces the decoding complexity and improves the system performance.

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相似文献/References:

[1]周琳凯,刁鸣.LT码截短度分布对译码性能影响的研究[J].应用科技,2013,40(02):15.[doi:10.3969/j.issn.1009-671X.201112005]
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[2]谢红,崔健博,解武.基于外信息符号差的LT码串行译码算法[J].应用科技,2014,41(04):29.
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更新日期/Last Update: 2015-03-11