| Turbo码在第三代移动通信中的译码实现研究 |
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| 引用本文： | 杨红,徐政五,张中培.Turbo码在第三代移动通信中的译码实现研究[J].电子科技大学学报(社会科学版),2001(3). |
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| 作者姓名： | 杨红 徐政五 张中培 |
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| 作者单位： | 电子科技大学电子工程学院!通信学院成都610054 |
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| 摘 要： | 在分析ＴＵＲＢＯ码输入量化的基础上，结合已有的译码ＭＡＰ算法实现结构，给出了第三代移动通信建议（３ＧＰＰ）中ＴＵＲＢＯ码的译码实现电路和译码迭代电路，并提出了将ＴＵＲＢＯ码运用于多级调制的码设计和多步译码方法。并将每级ＴＵＲＢＯ码设计出不同码率，提高了低层码的纠错能力，使高层码具有较高的传输信息能力。对ＴＵＲＢＯ码在第三代移动通信中的译码也进行了分析，并讨论了延迟问题，研究了ＦＰＧＡ实现规模。该电路结构具有好的译码性能，并达到了３ＧＰＰ的译码增益要求。
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| 关 键 词： | TURBO码 移动通信 软输出译码 分支度量 |
Study of Decoding Implementation of Turbo Codes in Third Generation Mobile Communication |
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| Yang Hong Xu Zhengwu Zhang Zhongpei.Study of Decoding Implementation of Turbo Codes in Third Generation Mobile Communication[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2001(3). |
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| Authors: | Yang Hong Xu Zhengwu Zhang Zhongpei |
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| Abstract: | On the basis of analysis on TURBO input quantification, this paper offers the electrocircuits and iteration electro-circuits for TURBO coding in the 3GPP, with existing MAP algorithm combined, thus improves the transmission rate of the 3GPP. The recently proposed TURBO codes are applied to multilevel modulation, then to multistage decoding. Based on the information theory, the method of designing rates and interleaving lengths of TURBO codes is proposed, which makes the lower levels codes have higher correct error capacities and the higher levels codes have higher transmission capacities. The coding of TURBO codes in the 3GPP is also analyzed and the delay problem and the scale problem of FPGA are discussed. The electro-circuit performs well in coding, which meets the gain demands of the 3GPP. |
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| Keywords: | TURBO codes mobile communications soft-output coding branch metric |
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