| 短LDPC码和RS码基于BP算法的性能比较 |
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| 引用本文： | 韩壮,酆广增,卞银兵. 短LDPC码和RS码基于BP算法的性能比较[J]. 重庆邮电大学学报(自然科学版), 2009, 21(1): 61-65 |
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| 作者姓名： | 韩壮 酆广增 卞银兵 |
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| 作者单位： | 南京邮电大学,通信与信息工程学院,江苏,南京,210003;南京邮电大学,通信与信息工程学院,江苏,南京,210003;南京邮电大学,通信与信息工程学院,江苏,南京,210003 |
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| 摘 要： | LDPC码和RS码是目前2种较为常见的纠错编码,在深空通信方面有着广泛的应用.在相同码长和码率的情况下,对短LDPC码和RS码2种线性分组码在AWGN信道下进行了基于BP算法的性能比较.短LDPC码使用LLR-BP算法,RS码使用自适应置信度传播(ABP)算法.仿真结果表明,基于相同条件下,短LDPC码比较RS码表现出优越的译码性能.
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| 关 键 词： | 短LDPC码 RS码 BP算法 LLR-BP算法 ABP算法 |
| 收稿时间： | 2008-06-06 |
Performance comparison of short LDPC and RS codes based on BP algorithm |
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| HAN Zhuang,FENG Guang-zeng,BIAN Yin-bing. Performance comparison of short LDPC and RS codes based on BP algorithm[J]. Journal of Chongqing University of Posts and Telecommunications, 2009, 21(1): 61-65 |
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| Authors: | HAN Zhuang FENG Guang-zeng BIAN Yin-bing |
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| Affiliation: | College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, P.R. China |
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| Abstract: | LDPC and RS codes are two common error correcting codes, which have been widely used in deep space communication. This paper investigates the performance comparisons between short LDPC and RS codes in AWGN channel based on BP algorithm. Both of the two linear block codes have same code length and code rate. The short codes used the LLR belief propagation algorithm and reed solomon codes used the adaptive BP algorithm. Simulation results show that under the same conditions, short LDPC codes demonstrate better decoding performance than RS codes. |
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| Keywords: | short LDPC codes reed-solomon codes belief-propagation algorithm LLR-BP algorithm adaptive BP algorithm |
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