| 基于原模图的多码率LDPC码编码设计 |
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| 引用本文： | 丁雨廷,刘顺兰,胡方宁.基于原模图的多码率LDPC码编码设计[J].杭州电子科技大学学报,2013(5):74-77. |
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| 作者姓名： | 丁雨廷 刘顺兰 胡方宁 |
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| 作者单位： | 杭州电子科技大学通信工程学院,浙江杭州,310018 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 该文提出了一种低复杂度消4环的LDPC码的设计方法。该方法基于原模图，运用简单的拷贝置换算法，可以适用于不同码率的LDPC码。在AWGN信道中仿真结果表明，多码率LDPC码的性能与随机码相比有一定的提高，且在一定的信噪比范围内误码性能优于PEG码。
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| 关 键 词： | 原模图低密度奇偶校验码 误码率性能 多码率 随机码 渐进边增长算法 |
Design of Multi-rate LDPC Codes Based on Protograph |
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| DING Yu-ting
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LIU Shun-lan
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HU Fang-ning.Design of Multi-rate LDPC Codes Based on Protograph[J].Journal of Hangzhou Dianzi University,2013(5):74-77. |
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| Authors: | DING Yu-ting LIU Shun-lan HU Fang-ning |
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| Affiliation: | (School of Communication Engineering, Hangzhou Dianzi University, Hangzhou Zhejiang 310018, China) |
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| Abstract: | This paper proposes a low-complexity design method for cancelling length 4-cycles in the factor graph of LDPC codes. The method is based on protograph, by a simple ＂copy-and-permute＂ algorithm i it can be applied to constructing different code rate LDPC codes. The simulation results in AWGN channels show that the performance of the proposed multi-rate LDPC codes has a certain improvement than that of random genera- ted LDPC codes, and has an advantage over PEG designed LDPC codes in some certain SNR range. |
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| Keywords: | protograph low-density parity-check codes basic encoding rules performance multiple-rate ran-dom generated low-density parity-check codes progressive edge-growth algorithm |
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