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

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• 作者：Jian-guo Yuan 袁建噿/a> ; Meng-qi Liang 梁梦玿/a> ; Yong Wang 王永…
• 刊名：Optoelectronics Letters
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：12
• 期：2
• 页码：132-135
• 全文大小：312 KB
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• 作者单位：Jian-guo Yuan 袁建国 (1)
  Meng-qi Liang 梁梦琪 (1)
  Yong Wang 王永 (1)
  Jin-zhao Lin 林金朝 (1)
  Yu Pang 庞宇 (1)
  
  1. Key Laboratory of Optical Communication and Networks, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Applied Optics, Optoelectronics and Optical Devices
  Chinese Library of Science
  
• 出版者：Tianjin University of Technology, co-published with Springer-Verlag GmbH
• ISSN：1993-5013

文摘

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.