摘要
基于SCG(4,k)码的构造方法提出了一种改进的新颖低密度奇偶校验(LDPC)码构造方法,该方法比改进前的SCG(4,k)码构造方法在硬件实现方面具有节省存储空间和降低计算复杂度的优点。采用该方法构造了冗余度为5.42%的LDPC(5929,5624)码,仿真分析表明,该码型比已广泛用于光通信系统中的经典RS(255,239)码具有更好的纠错性能与较低的译码复杂度。
A modified construction method of LDPC codes, based on the construction method of SCG （4, k） codes, is proposed. Compared with the traditional method, this novel method has such advantages as saving storage space and reducing computation complexity in the hardware realization. LDPC（5929,5624） codes were constructed with a redundancy of 5.42% by using this method. Simulation analysis shows that this novel code has better error-correction performance and lower decoding complexity than classic RS （255, 239） code that has been extensively applied in optical communication systems.
出处
《半导体光电》
CAS
CSCD
北大核心
2011年第4期543-546,共4页
Semiconductor Optoelectronics
基金
国家自然科学基金项目(61071117
61003256)
重庆市自然科学基金项目(2010BB2409)
重庆市教委项目(KJ110519)
关键词
光通信系统
低密度奇偶校验码
误码率
净编码增益
optical communication systems
low density parity check（LDPC） codes
bit error rate（BER）
net coding gain （NCG）
