Study on the distribution law of random code structure of irregular LDPC codes and its application in eliminating short cycles  

作　　者：MA LinHua CHANG YiLin Wang ShengDa 

机构地区：[1]State Key Laboratory of Integrated Service Networks, Xidlan University, Xi'an 710071, China [2]Aeronauiical Electronics Engineering Department, Air Force Engineering University, Engineering Institute, Xi'an 710038, China

出　　处：《Science in China(Series F)》2007年第1期99-104,共6页中国科学（F辑英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 60172030);Huawei Science Foundation;Xidian ISN National Key Laboratory

摘　　要：The distribution law of the random code structure of randomly constructed irregular low-density parity-check （LDPC） codes is studied, Based on the Progressive Edge-Growth （PEG） algorithm, a new algorithm which can both ellminate short cycles and keep the distribution of the random code structure is presented, The experimentsl results show that the performance of the irregular LDPC codes constructed by the new algorithm is superior to that of the PEG algorithm,The distribution law of the random code structure of randomly constructed irregular low-density parity-check （LDPC） codes is studied, Based on the Progressive Edge-Growth （PEG） algorithm, a new algorithm which can both ellminate short cycles and keep the distribution of the random code structure is presented, The experimentsl results show that the performance of the irregular LDPC codes constructed by the new algorithm is superior to that of the PEG algorithm,

关 键 词：Low-density parity.check codes cycles random code structure random distribution characteristics 

分 类 号：TN918.3[电子电信—通信与信息系统]