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卫星激光通信中基于Zig-Zag结构的原模图QC-LDPC码构造方法 被引量:2

Construction of QC-LDPC Code Based on Zig-Zag Structure in Satellite Laser Communication
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摘要 为应对卫星激光通信信道的时变性、改善传输的可靠性,提出一种基于Zig-Zag结构的原模图QC-LDPC码构造方法。该方法将原模图与Zig-Zag结构的移位系数设计方法相结合,构造校验矩阵围长至少为8且码长码率可灵活选择的ZZ-QC-LDPC码。仿真结果表明:该方法所构造的ZZ-QC-LDPC码在误码率为10^(-6)时,与同码率下基于等差数列和原模图构造的QC-LDPC码和基于最大公约数构造的QC-LDPC码以及具有大围长快速编码特性的QC-LDPC码相比,其净编码增益分别提高了约0.2,0.1和0.64dB,且在较大码率范围内均具有良好的纠错性能。 In order to improve the channel time-varying and the transmission reliability of satellite laser communications,a novel construction method of protograph quasi-cyclic lowdensity parity-check(QC-LDPC)codes based on the Zig-Zag(ZZ)structure is proposed.This construction method combines the protograph with the method of designing the shift coefficient of the Zig-Zag structure to construct the ZZ-QC-LDPC code with the check matrix of the girth-8 and the flexibly adjustable code-length code-rate.The simulation results show that under the same code-rate,the net coding gains of the ZZ-QC-LDPC code constructed by the proposed construction method,compared with the QC-LDPC code based on the arithmetic progression and protograph and the QC-LDPC code based on the greatest common divisor as well as the QC-LDPC code based on the large-girth fast encoding characteristics,can be improved by about 0.2,0.1 and0.64 dB respectively at the bit error ratio of 10^(-6),furthermore,the ZZ-QC-LDPC code has the more excellent error-correcting performance within the wider code-rate range.
作者 袁建国 刘议靖 李志伟 YUAN Jianguo;LIU Yijing;LI Zhiwei(Chongqing Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,CHN)
出处 《半导体光电》 北大核心 2021年第3期437-441,共5页 Semiconductor Optoelectronics
基金 国家自然科学基金项目(61971079) 2020年重庆市(重庆邮电大学)研究生科研创新项目。
关键词 Zig-Zag结构 原模图 QC-LDPC码 误码率 净编码增益 Zig-Zag structure protograph QC-LDPC codes bit error ratio net coding gain
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  • 1GALLAGER R G. Low-density parity check codes [ M ]. Cambridge, MA: MIT Press, 1963.
  • 2THORPE J. Low-density parity-check ( LDPC ) codes constructed from protographs [ C ]//Tech. Rep. Progress Report. Pasadena, CA, USA : JPL IPN, 2003 : 42-154.
  • 3DIVSALAR D, JONES C, THORPE J. Protograph based LDPC codes with minimum distance linearly growing with block size [ C ] HIEEE. IEEE Communications Society subject. ST,louis: IEEE Globecom, 2005: 1152-1156.
  • 4HA J, KIM J, KLINC D, et al. Rate-compatible punc- tured low-density parity-check codes with short block length [ J ]. IEEE Trans Inform Theroy, 2006, 52 ( 2 ) : 728-738.
  • 5YOU Ying, XIAO Min, WANG Lin. The rate-compatible Multi-Edge Type LDPC codes with short block length [ C]//IEEE. Proceedings of the 5th International Confer- ence on Wireless communications ( WiCOM' 09 ). NJ, USA : IEEE Press, 2009 : 1-4.
  • 6LI J, NARAYANNA K. Rate-compatible low density par- ity check codes for capacity-approaching ARQ scheme in packet data communications [ C ]//Proc. Int Conf Comm Internet and Info. Tech (CIIT). Virgin Islands, USA: 2002:201-206.
  • 7MOSTAFA E1-Khamy, HOU Ji-lei, BHUSHAN Naga. Design of rate-compatible structured LDPC codes for Hy- brid ARQ application [ J ]. IEEE J Sele Areas Commun, 2009, 27(6):965-973.
  • 8ABBASFAR A, DIVSALAR D, YAO Kung. Accumulate repeat accumulate codes [ C ]// IEEE International Sym- posium on Information Theory (ISIT). Chicago, USA: IEEE Globecom, 2004:509-513.
  • 9DIVSALAR D. Ensemble weight enumerators for proto- graph LDPC codes [ C]//IEEE. IEEE International Sym- posium on Information Theory (ISIT). Seattle, Washing- ton, USA: IEEE Press, 2006 : 1554-1558.
  • 10DIVSALAR D, DOLINAR S, JONS C R, et al. Capaci- ty-approaching protograph codes [ J ]. IEEE J sele Areas Commun,2009, 27(6) : 876-888.

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