| 摘要: |
| 低密度奇偶校验（LDPC）码具有接近Shannon限的良
好性能，能有效提高数据传输的可靠性。为提高LDPC码的性能，对码字的研究多集中于构造
、编码和译码这几方面的基础研究。首先简要给出了LDPC码的基本描述，然后对二进制和多
进制LDPC码的关键技术进行了系统归纳和全新分类，分别从构造、编码和译码3个方面进行
了详细探讨，重点对最新的研究成果进行了全面分析和总结，对LDPC码今后的研究具有指导
意义。 |
| 关键词: 低密度奇偶校验码 奇偶校验矩阵 构造 编码 译码 |
| DOI： |
|
| 基金项目:国家高技术研究发展计划(863计划)项目（2010AA7010422） |
|
| Survey on construction, encoding and decoding of low-density parity-check codes |
| ZHANG Yong-yu,WU Dong-wei,ZUO Li-fen,LIU Bing |
| (Unit 91469 of PLA,Beijing 100841,China) |
| Abstract: |
| Low-density parity-check (LDPC) codes are considered as a class of co
des with Shannon-limit-approaching performance, which can improve reliability of
data transmission effectively. In order to improve the performance of LDPC code
s, most of the research is focused on construction, encoding and decoding which
are the basis research. The basic description of LDPC codes is given firstly. Th
e key technologies of binary and nonbinary LDPC codes are summarized systematica
lly and classified in new ways, and the construction, encoding and decoding are
investigated in detail. A comprehensive survey of the latest literatures is prov
i
ded. The review is of high theoretical significance for the future work. |
| Key words: low-density parity-check(LDPC) code parity-check matrix constructions encodi
ng decoding |
