| 稀疏生成矩阵的低编码复杂度非正规LDPC码性能 |
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| 引用本文： | 唐蕾,仰枫帆. 稀疏生成矩阵的低编码复杂度非正规LDPC码性能[J]. 勤云标准版测试, 2006, 0(3): 202-207 |
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| 作者姓名： | 唐蕾 仰枫帆 |
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| 作者单位： | 南京航空航天大学信息科学与技术学院,中国南京210016 |
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| 基金项目： | 中国航空科学基金;航空基础科学基金 |
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| 摘 要： | 提出了一种新的基于稀疏生成矩阵的高性能非正规LDPC码的构造方法，并研究了其性能。与传统的由校验矩阵定义的LDPC码相比，在相同的译码复杂度前提下，非正规LDPC码的编码复杂度更低。模拟结果显示，在加性高斯白噪声信道下，非正规LDPC码的性能要显著优于传统LDPC码。
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| 关 键 词： | BP迭代译码算法 稀疏校验矩阵 稀疏生成矩阵 H-LDPC码 G-LDPC码 |
| 收稿时间： | 2006-02-15 |
| 修稿时间： | 2006-06-02 |
PERFORMANCE OF SIMPLE-ENCODING IRREGULAR LDPC CODES BASED ON SPARSE GENERATOR MATRIX |
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| Tang Lei,Yang Fengfan. PERFORMANCE OF SIMPLE-ENCODING IRREGULAR LDPC CODES BASED ON SPARSE GENERATOR MATRIX[J]. , 2006, 0(3): 202-207 |
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| Authors: | Tang Lei Yang Fengfan |
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| Affiliation: | College of Information Science and Technology, NUAA, 29 Yudao Street, Nanjing, 210016, P. R. China |
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| Abstract: | A new method for the construction of the high performance systematic irregular low-density parity-check (LDPC) codes based on the sparse generator matrix (G-LDPC) is introduced. The code can greatly reduce the encoding complexity while maintaining the same decoding complexity as traditional regular LDPC (H-LDPC) codes defined by the sparse parity check matrix. Simulation results show that the performance of the proposed irregular LDPC codes can offer significant gains over traditional LDPC codes in low SNRs with a few decoding iterations over an additive white Gaussian noise (AWGN) channel. |
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| Keywords: | belief propagation iterative decoding algorithm sparse parity-check matrix sparse generator matrix H-LDPC codes G-LDPC codes |
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