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| 短长度非规则重复累积码的构造 | |
| 引用本文： | 胡军锋,张海林,白洁,韩飞.短长度非规则重复累积码的构造[J].吉林大学学报(工学版),2010,40(1):255-0259. |
| 作者姓名： | 胡军锋 张海林 白洁 韩飞 |
| 作者单位： | 1. 西安电子科技大学,综合业务网理论及关键技术国家重点实验室,西安,710071;中国电子科技集团公司第二十研究所,西安,710068 2. 西安电子科技大学,综合业务网理论及关键技术国家重点实验室,西安,710071 3. 中国兵器工业第203研究所,西安,710065 4. 西安电子科技大学,通信工程学院,西安,710071 |
| 基金项目： | 高等学校创新引智基地项目（B08038）；陕西省自然科学基础研究计划项目(2006F30) |
| 摘 要： | 为了构造高性能的短长度非规则重复累积(IRA)码,分析了影响其性能的主要因素,在此基础上,对循序边增长(PEG)算法进行了改进。改进算法对度为2的变量节点施加了更多的保护,同时还减小了低码重码字出现的概率。仿真结果表明,用改进的PEG算法构造出的短长度IRA码,不但具有很低的错误平底,而且没有损失低信噪比区域的误码率性能。 |
| 关 键 词： | 通信技术 低密度校验(LDPC)码 非规则重复累积(IRA)码 循序边增长(PEG)算法 |
| 收稿时间： | 2008-06-05 |
Construction of short-length irregular repeat-accumulate code |
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| HU Jun-feng,ZHANG Hai-lin,BAI Jin,HAN Fei.Construction of short-length irregular repeat-accumulate code[J].Journal of Jilin University:Eng and Technol Ed,2010,40(1):255-0259. | |
| Authors: | HU Jun-feng ZHANG Hai-lin BAI Jin HAN Fei |
| Affiliation: | 1.State Key Laboratory of Integrated Service Network, Xidian University, Xi′an 710071, China;2.CETC No. 20 Research Institute, Xi′an 710068, China;3.No.203 Research Insititute of China Ordnance Industries,Xi′an 710065,China|4.College of Communication Engineering,Xidian University,Xi′an 710071,China |
| Abstract: | To construct the high performance short-length irregular repeat-accumulate(IRA) codes,the major factors affecting the performance of the finite-length IRA codes were analyzed. Based on the analysis,improvement was made on the progressive-edge-growth(PEG) algorithm. In the improved algorithm,more protection is given to the degree-2 variable nodes and the appear probability of the low-weight code words is reduced. Simulation results showed that the short-length IRA codes constructed by the proposed algorithm ... |
| Keywords: | communication technology low-density parity-check (LDPC) code irregular repeat accumulate (IRA) code progressive-edge-growth (PEG) algorithm |
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