摘要
提出了使用结构图设计列重为3的正则LDPC校验矩阵。所设计出的校验矩阵具有较大的围长,并且可以改变码长和码率。这些码可以很好的使用在通信和数据存储领域。最后对这些设计出的LDPC码进行了计算机仿真,仿真的数据结果表明:设计出的码在加性白高斯噪声信道下比随机产生的LDPC码有着更为优良的性能。
The regular lowdensity paritycheck （LDPC） check matrix with column weight j=3 designed with structure charts is proposed in this paper. The check matrix has large girth,can change code length and code rate. These codes may be used in the fields of communications and data storage. The computer simulation for LDPC codes that the authors designed was performed. The simulation results show that the designed codes have better biterrorrate decoding performance and lower error floors in additive white Gaussian noise channels than those of LDPC codes generated randomly.
出处
《现代电子技术》
北大核心
2015年第1期66-68,72,共4页
Modern Electronics Technique
