东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (10): 1406-1408.DOI: -

• 论著 • 上一篇    下一篇

低密度格形码译码算法高效实现方法

王晓松;常桂然;宁宣杰;   

  1. 东北大学信息科学与工程学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-10-15 发布日期:2013-06-22
  • 通讯作者: Wang, X.-S.
  • 作者简介:-
  • 基金资助:
    辽宁省科学技术基金资助项目(20062042)

Efficient implementation of decoding algorithm of low density lattice codes

Wang, Xiao-Song (1); Chang, Gui-Ran (1); Ning, Xuan-Jie (1)   

  1. (1) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-10-15 Published:2013-06-22
  • Contact: Wang, X.-S.
  • About author:-
  • Supported by:
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摘要： 对低密度格形码(low density lattice codes,LDLC)及其译码算法进行了介绍.针对在LDLC译码中,校验节点消息的卷积、伸缩和周期化扩展最耗时的问题,结合数字信号处理的相关技术,提出了一种LDLC译码的高效实现方案.仿真结果验证了LDLC优良的性能,并表明使用所提出的方案,每次迭代时间可以有效减少.

关键词: 低密度格形码, 低密度奇偶校验码, 迭代译码, 快速傅立叶变换

Abstract: The low density lattice codes (LDLC) and its decoding algorithm were described. For the most time-wasted steps, such as convolution, stretching and periodic expansion, an efficient implementation scheme was designed and came into effect in combination with the relevant technique of digital signal processing. Simulation results verified the excellent performance of LDLC and showed that the proposed scheme was available to shorten effectively the time for each iteration step in decoding.

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