[1]姜明,赵春明,刘占利.基于数据打孔混合ARQ方案的低密度奇偶校验码构造方法[J].东南大学学报(自然科学版),2006,36(2):198-201.[doi:10.3969/j.issn.1001-0505.2006.02.004]
 Jiang Ming,Zhao Chunming,Liu Zhanli.On construction of LDPC codes based on data puncturing hybrid ARQ[J].Journal of Southeast University (Natural Science Edition),2006,36(2):198-201.[doi:10.3969/j.issn.1001-0505.2006.02.004]
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基于数据打孔混合ARQ方案的低密度奇偶校验码构造方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
36
期数:
2006年第2期
页码:
198-201
栏目:
信息与通信工程
出版日期:
2006-03-20

文章信息/Info

Title:
On construction of LDPC codes based on data puncturing hybrid ARQ
作者:
姜明 赵春明 刘占利
东南大学移动通信国家重点实验室, 南京 210096
Author(s):
Jiang Ming Zhao Chunming Liu Zhanli
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
关键词:
低密度奇偶校验码 混合自动重传请求 和积算法
Keywords:
LDPC codes hybrid ARQ sum-product algorithm
分类号:
TN929.533
DOI:
10.3969/j.issn.1001-0505.2006.02.004
摘要:
为了在不增加低密度奇偶校验码编译码复杂度的条件下,改善数据打孔混合重传请求的系统吞吐量,给出了一种改进的矩阵构造和打孔方案,增强了校验比特的可靠度并提高了打孔译码的性能.由于每次重传接收端要做2次迭代译码,所以同时优化这2次迭代译码的噪声门限值,用密度演变算法给出了一种更加适合该协议的非规则分布.数据吞吐量的仿真结果显示,改进分布和构造的码字明显优于原有的码字.
Abstract:
The system throughput of data puncturing hybrid ARQ(automatic retransmission request)can be improved without any further additional encoding/decoding complexity for LDPC(low-deusity parity-check)codes. To achieve this, an improved matrix construction and puncturing pattern which increases the reliability of parity bits and the decoding performance is introduced. Since there are two iterative decoding steps in the receiver for each retransmission, the noise thresholds of both iterative decoding steps are optimized simultaneously and a more desirable irregular distribution is found by the density evolution algorithm. Simulation results of the data throughput show that the codes with the improved construction and distribution obviously outperform the original codes.

参考文献/References:

[1] Gallager R G.Low density parity check codes.[J].IRE Trans Inform Theory,1962,8(1):21-28.
[2] Dammer U,Naroska E,Schmermbeck S,et al.A data puncturing IR-scheme for type-II hybrid ARQ protocols using LDPC codes [C] // IEEE GLOBECOM ’04.Dallas TX USA,2004:3012-3016.
[3] Yang M,Ryan W E,Li Y.Design of efficiently decodable moderate-length high-rate irregular LDPC codes [J]. IEEE Trans Commun,2004,52(4):564-571.
[4] Ubanke R.Degree distribution optimizer for LDPC codes[EB/OL].[2005-09-02].http://lthcwww.epfl.ch/research/ldpcopt.
[5] Hu X Y,Eleftheriou E,Arnold D M.Regular and irregular progressive edge-growth tanner graphs [J]. IEEE Trans Inform Theory,2005,51(1):386-398.
[6] Richardson T J,Shokrollahi M A,Urbanke R.Design of capacity approaching irregular low-density parity-check codes [J]. IEEE Trans Inform Theory,2001,47(2):617-637.

相似文献/References:

[1]林炳,姜明,赵春明.基于二维优化的QC-LDPC码构造方法[J].东南大学学报(自然科学版),2010,40(1):6.[doi:10.3969/j.issn.1001-0505.2010.01.002]
 Lin Bing,Jiang Ming,Zhao Chunming.Construction of QC-LDPC codes based on two-dimentional optimization[J].Journal of Southeast University (Natural Science Edition),2010,40(2):6.[doi:10.3969/j.issn.1001-0505.2010.01.002]

备注/Memo

备注/Memo:
作者简介: 姜明(1976—),男,博士生; 赵春明(联系人),男,博士,教授,博士生导师,cmzhao@seu.edu.cn.
更新日期/Last Update: 2006-03-20