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应用科学学报 ›› 2005, Vol. 23 ›› Issue (2): 140-143.

• 论文 • 上一篇    下一篇

PCGC码低复杂度译码算法的研究

李晋, 徐晓东, 姜明, 尤肖虎   

  1. 东南大学移动通信国家重点实验室, 江苏南京 210096
  • 收稿日期:2003-12-08 修回日期:2004-09-10 出版日期:2005-03-31 发布日期:2005-03-31
  • 作者简介:李晋(1977-),男,江西临川人,博士生,E-mail:lijin@seu.edu.cn;尤肖虎(1962-),男,江苏苏州人,教授,博导,E-mail:xhyu@seu.edu.cn
  • 基金资助:
    国家自然科学基金重大项目(60496311)

A Study on Low Complexity PCGC Decoding Algorithms

LI Jin, XU Xiao-dong, JIANG Ming, YOU Xiao-hu   

  1. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
  • Received:2003-12-08 Revised:2004-09-10 Online:2005-03-31 Published:2005-03-31

PDF

67

被引次数

6

摘要： PCGC是一种将LDPC码运用于并行级联编码形式的信道编码,它的译码采用的是修改后的双层迭代BP(belief propagation,置信传播)译码算法.这种译码算法的性能较好,但运算复杂度高,不利于硬件实现.该文介绍两种低复杂度的PCGC迭代译码算法,并通过仿真验证了算法具有非常好的性能.

关键词: 置信算法, 低密度奇偶校验码, 迭代译码, 并行级联Gallager码

Abstract: The parallel concatenated gallager code (PCGC), a new kind of channel code which concatenates the low density parity check (LDPC) code in parallel, can be decoded in the two-layer iterative style.The PCGC decoder has good performance, but its high computation complexity interferes with its hardware implement.In this paper two kinds of low complexity PCGC iterative decoding algorithms, and the simulation results prove that the algorithms have excellent performance are proposed.

Key words: PCGC, LDPC code, belief propagation algorithm, iterative decoding

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