| Turbo码译码器的DSP实现 |
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| 引用本文： | 尹成群,谢小军,宋文妙.Turbo码译码器的DSP实现[J].电子测量与仪器学报,2005,19(5):72-76. |
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| 作者姓名： | 尹成群 谢小军 宋文妙 |
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| 作者单位： | 华北电力大学电子与通信工程学院,保定,071003;华北电力大学电子与通信工程学院,保定,071003;华北电力大学电子与通信工程学院,保定,071003 |
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| 基金项目： | 河北省教育厅科研项目，华北电力大学校科研和教改项目 |
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| 摘 要： | Turbo码以其优越的性能在通信系统中越来越受到人们的重视.由于Turbo码译码算法的复杂性,译码器通常需占用大量的存储空间和较长的运算时间,难以满足实际系统的要求.本文在深入研究Max-Log-MAP译码算法的基础上,对该算法进行了合理优化,提出了一种基于DSP的高效的软件实现方法.基于此方法实现的Turbo码译码器具有较低的误码率和较小的译码时延,在语音通信和数据通信中具有广泛的应用前景.
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| 关 键 词： | Turbo码 Max-Log-MAP 数字信号处理器 |
| 收稿时间： | 2004-04 |
| 修稿时间： | 2004-04 |
DSP Implementation of Turbo Decoder |
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| Yin Chengqun,Xie Xiaojun,Song Wenmiao.DSP Implementation of Turbo Decoder[J].Journal of Electronic Measurement and Instrument,2005,19(5):72-76. |
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| Authors: | Yin Chengqun Xie Xiaojun Song Wenmiao |
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| Affiliation: | College of Electronic and Communication Engineer, North China Electric Power University, Baoding 071003 |
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| Abstract: | More and more attention is focused on Turbo codes in communication system for their good performance.As the high complexity of the decoding algorithm,a common decoder needs a lot of memory space and much computation time,which can't satisfy the requirement of the practical system.Based on the intensive research on the Max-Log-MAP algorithm of the turbo codes,the decoding algorithm was optimized and an efficient software method on DSP is presented in this paper.The turbo decoder based on the software method has low bit error rate with a small decoding delay,which has shown a broad application in speech communication and data communication. |
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| Keywords: | Max-Log-MAP |
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