| 基于定点DSP的Turbo码译码器实现 |
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| 引用本文： | 芮义斌,杨建强,孙锦涛. 基于定点DSP的Turbo码译码器实现[J]. 光电技术应用, 2006, 21(4): 75-77 |
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| 作者姓名： | 芮义斌 杨建强 孙锦涛 |
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| 作者单位： | 南京理工大学通信工程系,江苏,南京,210094;南京理工大学通信工程系,江苏,南京,210094;南京理工大学通信工程系,江苏,南京,210094 |
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| 摘 要： | 在介绍了一种改进的Max—Log-MAP译码算法基础上．讨论了与定点DSP实现译码算法相关的量化精度、溢出处理及数据存储等几个问题，并采用VC5409实现了（13．15）8Turbo码译码器．经测试．其性能接近浮点译码性能．
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| 关 键 词： | Turbo码 Max-Log-MAP算法 定点DSP |
| 文章编号： | 1673-1255(2006)04-0075-03 |
| 修稿时间： | 2006-03-15 |
Implementation of Turbo Decoder Based on Fixed-point DSP |
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| RUI Yi-bin,YANG Jian-qiang,SUN Jin-tao. Implementation of Turbo Decoder Based on Fixed-point DSP[J]. Electro-Optic Technology Application, 2006, 21(4): 75-77 |
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| Authors: | RUI Yi-bin YANG Jian-qiang SUN Jin-tao |
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| Abstract: | Based on the introduction of Max-Log-MAP decoding algorithm,some problems correlated with Turbo decoder with fixed-point digital signal processor(DSP) are discussed,such as precision in fixed-point quantification,over-flow of calculation and data storing.One(13,15) 8 Turbo decoder is implemented with fixed-point DSP VC5409.The test results show that the performance of the decoder is close to that of float-point one. |
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| Keywords: | Turbo code Max-Log-MAP algorithm fix-point digital signal processor |
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