| 一种Turbo码译码的矩阵算法 |
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| 引用本文： | 张忠培, 周亮. 一种Turbo码译码的矩阵算法[J]. 电子与信息学报, 2002, 24(2): 266-271. |
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| 作者姓名： | 张忠培 周亮 |
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| 作者单位： | 1. 清华大学微波与数字通信国家重点实验室,北京,100084
2. 电子科技大学国防通信抗干扰实验室,成都,610054 |
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| 摘 要： | 在Bahl矩阵算法的基础上,提出了Turbo码译码的矩阵算法,使Turbo码的复杂迭代运算简化为适用于大规模集成电路的矩阵运算,运算速度得以提高,数据存量变小,译码过程简单明了,特别适用于约束长度较小的Turbo码译码。讨论了第三代移动通Turbo编码的状态转移图及矩阵译码过程。
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| 关 键 词： | MAP算法 Turbo码 迭代译码 矩阵算法 |
| 收稿时间： | 1999-11-30 |
| 修稿时间： | 1999-11-30 |
A Matrix decoding algorithm for Turbo-codes |
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| Zhang Zhongpei, Zhou Liang. A Matrix decoding algorithm for Turbo-codes[J]. Journal of Electronics & Information Technology, 2002, 24(2): 266-271. |
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| Authors: | Zhang Zhongpei Zhou Liang |
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| Affiliation: | State Key Lab on Microwave & Digital Commu., Tsinghua Univ.,Beijing 100084 China;National Communication Lab UESTC Chengdu 610054 China |
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| Abstract: | A new matrix decoding algorithm for Turbo-codes is derived from Bahl's matrix algorithm. The complex iterating operations are paralleled and well formulclted as a set of simple matrix operations which are fit to design efficient VLSI circuits. Thus, the matrix algorithm increases the decoding speed and simplifies the excessive memory accesses, and is specially fit to Turbo-codes with small memories. States transfer and decoding process of Turbo-codes in 3GPP are also discussed in this paper. |
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| Keywords: | MAP algorithm Turbo-codes Iterative decoding Matrix algorithm |
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