有限长不规则LDPC码的构造和编码的优化
doi: 10.3724/SP.J.1146.2006.01182
Optimization of Construction and Encoding for Finite Length Irregular LDPC Codes
-
摘要: 该文分析了影响有限长低密度校验(LDPC)码性能的主要因素，在此基础上从度分布参数的优选为起点，结合改进的循序边增长(PEG)算法构造出初步的校验矩阵，提出一种实用的编码优化算法对该校验矩阵进一步优化，最终得到错误平底低且编码复杂度准线性的有限长不规则LDPC码。该优化方法可以容易地推广到一般的信道条件下。Abstract: The main influence for the performance of finite length Low-Density Parity-Check(LDPC) codes is analyzed. According to optimum choice for degree distribution, a check matrix is constructed with improved Progressive-Edge-Growth (PEG) algorithm. A practical efficient encoding algorithm is proposed to optimize the check matrix. A finite length irregular LDPC code with low error-floor performance and approximate linear encoding complexity is obtained. This optimization method can be easily extended to general communication channels.
-
计量
- 文章访问数: 3013
- HTML全文浏览量: 70
- PDF下载量: 1003
- 被引次数: 0
下载:
