摘要
提出一种由代数构造法与准循环矩阵变换法相结合的准循环LDPC码系统构造方案,解决了准循环LDPC码构造过程复杂、在实际应用中缺乏适应性等问题。代数构造法容易构造出性能优良的高码率准循环LDPC母码;结合准循环矩阵的变换,能在母码的基础上生成满足应用需求的改良码或多码率的改良码组合。分析和仿真证明,该构造方案便捷、灵活,可获得性能优秀而实用的改良码。
A new method based on algebraic method and matrix transformation is proposed to design multi-rate families of Quasi-Cyclic LDPC codes,which is promising to solve the problems such as the difficulty of code design,the lack of adaptability of codes,etc.QC-LDPC mother codes with good performance can be generated by algebraic methods;moreover,through matrix transformation based on the mother codes,one can obtain improved codes or multi-rate code families of improved codes to meet the requirements for code rate and code length.The excellent performance of mother codes could be inherited by the improved code,which is verified by the computer simulation.
出处
《电视技术》
北大核心
2009年第S2期36-39,共4页
Video Engineering
