| LDPC码BP译码算法研究 |
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| 引用本文： | 冯小晶,周围. LDPC码BP译码算法研究[J]. 电子测试, 2009, 0(7): 41-43,56 |
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| 作者姓名： | 冯小晶 周围 |
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| 作者单位： | 重庆邮电大学,移动通信重点实验室,重庆,400065 |
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| 摘 要： | 本文研究了LDPC码的译码。深入研究了概率域BP算法和LLRBP算法。通过计算机仿真，比较了不同码长和不同迭代次数对译码性能的影响。通过计算机仿真得到在LDPC译码过程中，LDPC码的码字越长，构造的校验矩阵中短周期就越短，性能提高就越为明显。同时得到在LDPC译码过程中，迭代次数越多，各节点获得的信息的准确性就越高，性能提高就越为明显。
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| 关 键 词： | LDPC 译码 BP算法 LLR-BP |
Study on BP decoding algorithm of LDPC codes |
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| Feng Xiaojing,Zhou Wei. Study on BP decoding algorithm of LDPC codes[J]. Electronic Test, 2009, 0(7): 41-43,56 |
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| Authors: | Feng Xiaojing Zhou Wei |
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| Affiliation: | Feng Xiaojing Zhou Wei ( Key laboratory of Mobile Communications, Chongqing University of Post and Telecommunication, Chongqing 400065, China) |
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| Abstract: | Because of the excellent performance of LDPC codes, there is a good prospect in information transmission.Studied the LDPC decoding.In-depth study the probability domain BP algorithm and LLR BP algorithm.Through computer simulation, comparison different code length and different iterations to the impact of decoding performance. In the process of LDPC decoding,LDPC code of codeword more longer,check matrix structure with fewer short-period,get the more obvious performance.The more iterations,each node of the accuracy of the information obtained will be more,get the more obvious performance. |
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| Keywords: | LDPC LDPC decoding BP algorithm LLR-BP |
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