QUASI-SYSTEMATIC BLOCK-CIRCULANT LDPC CODES  

作　　者：Xu Ying Wei Guo 

机构地区：[1]PCN ＆ SS Lab, Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China

出　　处：《Journal of Electronics(China)》2008年第5期641-646,共6页电子科学学刊（英文版）

摘　　要：A class of Quasi-Systematic Block-Circulant Low-Density Parity-Check(QSBC-LDPC) codes is proposed.Block-circulant LDPC codes have been studied a lot recently,because the simple structures of their parity-check matrices are very helpful to reduce the implementation complexities.QSBC-LDPC codes are special block-circulant LDPC codes with quasi-systematic parity-check ma-trices.The memories for encoders of QSBC-LDPC codes are limited,and the encoding process can be carried out in a simple recursive way with low complexities.Researches show that the QSBC-LDPC codes can provide remarkable performances with low encoding complexities.A class of Quasi-Systematic Block-Circulant Low-Density Parity-Check （QSBC-LDPC） codes is proposed. Block-circulant LDPC codes have been studied a lot recently, because the simple structures of their parity-check matrices are very helpful to reduce the implementation complexities. QSBC-LDPC codes are special block-circulant LDPC codes with quasi-systematic parity-check matrices. The memories for encoders of QSBC-LDPC codes are limited, and the encoding process can be carried out in a simple recursive way with low complexities. Researches show that the QSBC-LDPC codes can provide remarkable performances with low encoding complexities.

关 键 词：Low-Density Parity-Check （LDPC） codes Quasi-systematic Block-circulant Recursive encoding Cyclic-shifting 

分 类 号：TN919.3[电子电信—通信与信息系统]