Journal of Hebei University(Natural Science Edition) >

2017 , Vol. 37 >Issue 3: 316 - 321

DOI: https://doi.org/10.3969/j.issn.1000-1565.2017.03.015

Encoder and decoder realization of non-binary LDPC codes based on RA structure

  • TIAN Xiaoyan ,
  • CAI Suo ,
  • ZHANG Suoliang
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  • College of Electronic and Information Engineering, Hebei University, Baoding 071002, China

Received date: 2016-04-28

  Online published: 2017-05-25

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Abstract

Compared with binary LDPC codes,non-binary codes have better error correction performance,stronger burst-error-correcting capability,can also combine with higher-order modulations,which attracted a wide-spread attentiaon.However the advantages of non-binary LDPC codes are limited by the high complexity of encoding and decoding algorithm.Based on repeat accumulate structure,a check matrix with fast algorithm was constructed.By using fast double-recursion pipeline method and improved EMS decoding algorithm,complexity and calculation of the algorithm were reduced,which are beneficial for the realization of the hardwares.On Gaussian channel,the BER of GF(2)and GF(4)LDPC codes are compared,and the modulation performance of BPSK and 4QAM are compared for GF(4)LDPC.Simulation results prove the validity and feasibility of the design.

Key words： non-binary LDPC codes; repeat accumulate codes; fast double-recursion pipeline method; EMS algorithm

Cite this article

TIAN Xiaoyan , CAI Suo , ZHANG Suoliang . Encoder and decoder realization of non-binary LDPC codes based on RA structure[J]. Journal of Hebei University(Natural Science Edition), 2017 , 37(3) : 316 -321 . DOI: 10.3969/j.issn.1000-1565.2017.03.015

References

[1] GALLAGER R G.Low-density parity-check codes [J].IRE Trans Information Theory,1962,8(1):21-28.
[2] DAVEY M C,MACKAY D J C.Low density parity check codes over GF(q)[J].IEEE Commun Lett,1998,2(6):165-167.
[3] JOHNSO S J,WELLER S R.Combinatorial interleavers for systematic regular repeat-accumulate codes [J].IEEE Transactions on Communications,2008,56(8):1201-1206.
[4] 袁瑞佳,白宝明,童胜.10 Gbps LDPC编码器的FPGA设计[J].电子与信息学报,2011,33(12):2942-2947.DOI:10.3724/SP.J.1146.2010.01338. YUAN R J,BAI B M,TONG S.FPGA-based design of LDPC encoder with throughput over 10 Gbps [J].Journal of Electronics & Information Technology,2011,33(12):2942-2947.DOI:10.3724/SP.J.1146.2010.01338.
[5] 张博,林伟,刘春元,等.突发错误信道下的多元LDPC码设计与性能分析[J].通信学报,2013,34(7):98-104.DOI:10.3969/j.issn.1000-436x.2013.07.011. ZHANG B,LIN W,LIU C Y,et al.On the designand performance of nonbinary LDPC codes on burst errorchannels [J].Journal on Communications,2013,34(7):98-104.DOI:10.3969/j.issn.1000-436x.2013.07.011.
[6] ZHAO S C,LU Z F,MA X,et al.A variant of the EMS decoding algorithm for nonbinary LDPC Codes [J].IEEE Communications Letters,2013,17(8):1640-1643.
[7] 张红泰,刘宏立,刘述刚.基于满二叉树的RA码交织器设计[J].计算机工程与科学,2015,37(4):699-703.DOI:10.3969/J.issn.1007-130X.2015.04.012. ZHANG H T,LIU H L,LIU S G.Interleaver design for RA codes based on full binary tree [J].Computer Engineering & Science,2015,37(4):699-703.DOI:10.3969/J.issn.1007-130X.2015.04.012.
[8] 吕岩,李劲.通用PSK和QAM解调接收机[J].河北大学学报(自然科学版),2013,33(2):204-209.DOI:10.3969/j.issn.1000-1565.2013.02.017. LU Y,LI J.Universal PSK and QAM demodulation receiver [J].Journal of Hebei University(Natural Science Edition),2013,33(2):204-209.DOI:10.3969/j.issn.1000-1565.2013.02.017.
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