| 光通信系统中基于LDPC码的SFEC码型研究 |
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| 引用本文： | 袁建国.光通信系统中基于LDPC码的SFEC码型研究[J].光电子．激光,2009(11):1450-1453. |
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| 作者姓名： | 袁建国 |
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| 作者单位： | 重庆邮电大学光纤通信技术重点实验室; |
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| 基金项目： | 国家自然科学基金-中物院NSAF联合基金资助项目(10776040); 重庆邮电大学博士启动基金资助项目(A2007-47) |
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| 摘 要： | 基于光通信系统中低密度奇偶校验(LDPC)码型的构造原则和构造方法,构造了适用于光通信系统中冗余度为6.69%的新颖LDPC(3969,3720)和冗余度为4.56%的新颖LDPC(8281,7920)码。仿真分析表明:在10-12的误码率(BER)时,这两种新颖码型在迭代18次后的净编码增益(NCG)分别比ITU-TG.975中RS(255,236)码的NCG大1.63dB和1.49dB,并且LDPC码的译码可在硬件上并行实现;这两种新颖码型的译码速度相当快,与ITU-TG.975.1中级联码型相比,这两种LDPC码的实现复杂度要低得多,可在将来的硬件实现中节省存储空间和减少计算量。因而,所构造的这两种新颖LDPC码型都可作为超验前向纠错(SFEC)码的候选码型。
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| 关 键 词： | 超强前向纠错(SFEC) 低密度奇偶校验(LDPC)码 净编码增益(NCG) 误码率(BER) 光通信系统 |
Study on the SFEC code type based on the LDPC code for optical communication systems |
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| YUAN Jian-guo.Study on the SFEC code type based on the LDPC code for optical communication systems[J].Journal of Optoelectronics·laser,2009(11):1450-1453. |
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| Authors: | YUAN Jian-guo |
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| Affiliation: | YUAN Jian-guo,YE Wen-wei,MAO You-ju(Key Lab of Optical Fiber Communications Technology,Chongqing University of Posts & Telecommunications,Chongqing 400065,China) |
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| Abstract: | Based on the construction principles of the low-density Parity-check code(LDPC)for optical communication systems,a novel construction method of the LDPC code is proposed,and the novel LDPC(3969,3720)code with 6.69% redundancy and the novel LDPC(8281,7920)code with 4.56% redundancy are constructed.The simulation results show that the net coding gain(NCG)of the two LDPC codes at the eighteenth iteration with the BER of 10-12 are respectively 1.63 dB,1.49 dB which are more than that of the RS(255.239)code in I... |
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| Keywords: | low-density parity-check(LDPC)code super forward error correction(SFEC) net coding gain(NCG) bit error rate(BER) optical communication systems |
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