| 一种加速Turbo码译码实现的改进算法的研究 |
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| 引用本文： | 许成谦,林雪红,陈嘉兴.一种加速Turbo码译码实现的改进算法的研究[J].电子学报,2002,30(8):1210-1212. |
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| 作者姓名： | 许成谦 林雪红 陈嘉兴 |
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| 作者单位： | 1. 燕山大学信息科学与工程学院,河北秦皇岛 066004;2. 河北师范大学电子系,河北石家庄 050031 |
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| 基金项目： | 河北省自然科学基金 (No .6992 4 5) |
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| 摘 要： | 本文针对Turbo码在译码过程中复杂度相当大的缺点,提出了一种新的改进算法,通过对附加信息的门限判决而加快译码速度,从而降低了译码复杂度,提高了译码性能.此外,我们还给出了此门限值的理论确定方法.计算机模拟结果表明,采用所提出的改进算法与传统的最大后验概率译码算法相比,其译码性能和译码复杂度均有明显的改善.
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| 关 键 词： | Turbo码 MAP算法 提前判决 门限值 |
| 文章编号： | 0372-2112(2002)08-1210-03 |
| 收稿时间： | 2001-04-25 |
An Improved Algorithm for Accelerating Decoding Implementation of Turbo Codes |
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| XU Cheng-qian ,LIN Xue-hong ,CHEN Jia-xing.An Improved Algorithm for Accelerating Decoding Implementation of Turbo Codes[J].Acta Electronica Sinica,2002,30(8):1210-1212. |
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| Authors: | XU Cheng-qian LIN Xue-hong CHEN Jia-xing |
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| Affiliation: | 1. College of Info.Sci.& Engine.,Yanshan University,Qinhuangdao,Hebei 066004,China;2. Dept.of electronic,Hebei Normal University,Shijiazhuang,Hebei 050031,China |
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| Abstract: | This paper presents a new improved algorithm to reduce the considerable complexity of decoding process of Turbo codes.It can accelerate decoding and improve decoding performance through the threshold decision of extrinsic information.In addition,approach to determine the specific threshold value was presented.The results of computer simulation have shown that the proposed algorithm has better performance and lower complexity than the traditional Maximum A-Posteriori decoding algorithm. |
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| Keywords: | Turbo code MAP algorithm advance decision threshold value |
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