Improved Low-Density Parity-Check Codes Based on Single Parity-Check Block and Their Performance Analysis on the Binary Erasure Channel  

作　　者：LIN Jing JING Longjiang ZHU Weile ZHENG Jijun 

机构地区：[1]School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China [2]Sichuan Petroleum Geophysical Prospecting Company, Chengdu 610015, China

出　　处：《Chinese Journal of Electronics》2008年第4期733-736,共4页电子学报（英文版）

摘　　要：Based on some characteristics of the decoding and the error floors of Low-density parity-check （LDPC） codes, an approach of adding single parity-check blocks to original LDPC blocks over GF（2） is proposed, which can correct multiple block errors in a block group. When this approach is set to have correcting capacity of no more than two block errors in a code group, the performance of ensemble C（n, x^l-1,x^r-1） on the Binary erasure channel （BEC） with this approach is analyzed. The simulation results indicate that when the Block error probability （BEP） drops, the performance of the given LDPC codes can be improved exponentially. Also, the error floors of LDPC codes can be suppressed to much lower levels. Therefore, the short-length LDPC codes have a wide range of applications.

关 键 词：LDPC codes Single parity-check blocks BEC BEP. 

分 类 号：TN911[电子电信—通信与信息系统]