Optoelectronics Letters, Volume. 12, Issue 2, 132(2016)

A novel construction scheme of QC-LDPC codes based on the RU algorithm for optical transmission systems

Jian-guo YUAN*... Meng-qi LIANG, Yong WANG, Jin-zhao LIN and Yu PANG |Show fewer author(s)
Author Affiliations
  • Key Laboratory of Optical Communication and Networks, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
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    A novel lower-complexity construction scheme of quasi-cyclic low-density parity-check (QC-LDPC) codes for optical transmission systems is proposed based on the structure of the parity-check matrix for the Richardson-Urbanke (RU) algorithm. Furthermore, a novel irregular QC-LDPC(4 288, 4 020) code with high code-rate of 0.937 is constructed by this novel construction scheme. The simulation analyses show that the net coding gain (NCG) of the novel irregular QC-LDPC(4 288,4 020) code is respectively 2.08 dB, 1.25 dB and 0.29 dB more than those of the classic RS(255, 239) code, the LDPC(32 640, 30 592) code and the irregular QC-LDPC(3 843, 3 603) code at the bit error rate (BER) of 10-6. The irregular QC-LDPC(4 288, 4 020) code has the lower encoding/decoding complexity compared with the LDPC(32 640, 30 592) code and the irregular QC-LDPC(3 843, 3 603) code. The proposed novel QC-LDPC(4 288, 4 020) code can be more suitable for the increasing development requirements of high-speed optical transmission systems.

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    YUAN Jian-guo, LIANG Meng-qi, WANG Yong, LIN Jin-zhao, PANG Yu. A novel construction scheme of QC-LDPC codes based on the RU algorithm for optical transmission systems[J]. Optoelectronics Letters, 2016, 12(2): 132

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    Paper Information

    Received: Sep. 1, 2015

    Accepted: --

    Published Online: Oct. 12, 2017

    The Author Email: Jian-guo YUAN (yuanjg@cqupt.edu.cn)

    DOI:10.1007/s11801-016-5167-6

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