| 基于Max-Log-MAP的实用Turbo码译码结构 |
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| 引用本文： | 芮义斌,孙锦涛,杨建强,束锋.基于Max-Log-MAP的实用Turbo码译码结构[J].金陵科技学院学报,2006,22(3):30-33. |
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| 作者姓名： | 芮义斌 孙锦涛 杨建强 束锋 |
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| 作者单位： | 南京理工大学通信工程系,江苏,南京,210094 |
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| 摘 要： | 提出了一种实用简化的Max-Log-MAP算法Turbo码译码结构.讨论并进一步简化了一种Max-Log-MAP算法;在分析比较了其与MAP算法区别的基础上,引入尺度因子SF用以修正Max-Log-MAP迭代译码过程中的译码器输出外部信息,提出了一种实用的译码算法SF-Max-Log-MAP.仿真表明,在合理选取SF时,该算法的译码性能明显优于Max-Log-MAP算法.
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| 关 键 词： | Turbo码 Max-Log-MAP算法 译码 外部信息 |
| 文章编号： | 1672-755X(2006)03-0030-04 |
| 修稿时间： | 2006年4月22日 |
Practical Decoding Structure of Turbo Code Based on Max-Log-MAP Algorithm |
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| RUI Yi-bin,SUN Jin-tao,YANG Jian-qiang,SHU Feng.Practical Decoding Structure of Turbo Code Based on Max-Log-MAP Algorithm[J].Journal of Jinling Institute of Technology,2006,22(3):30-33. |
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| Authors: | RUI Yi-bin SUN Jin-tao YANG Jian-qiang SHU Feng |
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| Abstract: | One simplified practical decoding structure of Turbo codes based on Max-Log-MAP algorithm is presented.A Max-Log-MAP algorithm is discussed and simplified. Based on analysis of the differences between Max-Log-MAP and maximum a posteriori(MAP) algorithm,a scale factor(SF) is adopted to scale the extrinsic information of the decoders in the Max-Log-MAP based iterative decoding process. One practical decoding algorithm,SF-Max-Log-MAP,is then introduced.The simulation shows that the decoding performance of this algorithm is better than that of Max-Log-MAP,when a reasonable SF has been selected. |
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| Keywords: | Turbo code Max-Log-MAP algorithm decode extrinsic information |
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