| 一种低复杂度的短LDPC码级联译码算法 |
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| 引用本文： | 卞银兵,酆广增.一种低复杂度的短LDPC码级联译码算法[J].数据采集与处理,2010,25(2). |
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| 作者姓名： | 卞银兵 酆广增 |
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| 作者单位： | 南京邮电大学通信与信息工程学院,南京,210003 |
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| 摘 要： | 为了提高短低密度校验码(Short LDPC)的纠错性能,在研究盒匹配译码算法(BMA)和置信度与分阶统计译码级联算法(BP-OSD)的基础上,提出了一种新的针对短LDPC码译码的BP-BMA级联算法.该算法充分利用了BMA算法具有较低译码复杂度的特性.然后,利用该算法结合对数似然比累积(ALLR)算法进行了计算机仿真.仿真结果表明:BP-BMA级联算法与BP-OSD相比,译码性能有所提高,且译码复杂度大大降低了,在译码性能和复杂度间取得了很好的折中.
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| 关 键 词： | 短LDPC码 置信度传播 分阶统计译码 盒匹配译码算法 级联算法 |
Novel Concatenation Decoding Algorithm for Short LDPC Codes with Lower Complexities |
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| Bian Yinbing,Feng Guangzeng.Novel Concatenation Decoding Algorithm for Short LDPC Codes with Lower Complexities[J].Journal of Data Acquisition & Processing,2010,25(2). |
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| Authors: | Bian Yinbing Feng Guangzeng |
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| Affiliation: | Bian Yinbing,Feng Guangzeng(College of Telecommunication , Information Engineering,Nanjing University of Posts , Communication,Nanjing,210003,China) |
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| Abstract: | To improve the error-correcting performance of short low-density-parity-code(LDPC),based on the box and match decoding algorithm(BMA),and the belief propagation serially concatenated with ordered statistics decoding algorithm(BP-OSD),a BP serially concatenated with BMA(BP-BMA) algorithm for the decoding of short LDPC codes is proposed.The BP-BMA algorithm can utilize the decoding complexity of BMA lower than that of OSD.Then,combined with the accumulated log-likelihood ratio(LLR) algorithm,computer simulati... |
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| Keywords: | short LDPC codes belief propagation ordered statistic decoding box and match algorithm concatenation algorithm |
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