电讯技术Issue(1)：68-72,5.DOI:10.3969/j.issn.1001-893x.2015.01.012
一种适用于大数逻辑可译LDPC码的自适应译码算法
An Adaptive Decoding Algorithm for Majority-Logic Decodable LDPC Codes
张凯 1杨勇1
作者信息
- 1. 西安烽火电子科技有限责任公司，西安710075
- 折叠
摘要
Abstract
Majority-logic decodable low-density parity check( LDPC) codes have large column weight. For these special LDPC codes,a low complexity adaptive decoding algorithm based on the integer reliabilities is proposed. In the process of decoding,different adaptive scaling factor is introduced for each check node to modify the extrinsic information. Simulation results show that the performance of the adaptive decoding algo-rithm is almost the same as that of the sum-product algorithm( SPA) and there is only 0. 1 dB difference between two decoding algorithms when the bit error rate( BER) is about 10-5 . Featured by low complexity, parallel computation and integer information,the proposed adaptive decoding algorithm is very easy to be realized in practice.关键词
低密度奇偶校验码/大数逻辑可译码/自适应译码算法/外信息/低复杂度Key words
low density parity check( LDPC) code/majority-logic decodable code/adaptive decoding algo-rithm/extrinsic information/low complexity分类
信息技术与安全科学引用本文复制引用
张凯,杨勇..一种适用于大数逻辑可译LDPC码的自适应译码算法[J].电讯技术,2015,(1):68-72,5.
