| Turbo码多级调制及性能分析 |
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| 引用本文： | 张中培,杨虹.Turbo码多级调制及性能分析[J].电子科技大学学报(社会科学版),2000(6). |
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| 作者姓名： | 张中培 杨虹 |
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| 作者单位： | 电子科技大学应用物理系!电子工程学院，成都610054，电子科技大学应用物理系!电子工程学院，成都610054 |
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| 摘 要： | 提出了将Turbo码运用于多级调制的码设计和多步译码方法。根据信息理论,将每级Turbo码设计出不同码率,使低层码具有较高的纠错能力,而高层码具有较高的传输信息能力,从而提高系统传输率。对Turbo码多级调制的误码性能进行了分析,得出误码率计算公式,并对Turbo码调制方案进行了仿真,证明了结论的正确性。
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| 关 键 词： | 多级码 多步译码 码重分布 Turbo码 |
Turbo-codes Multilevel Modulation and Their Performance |
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| Zhang Zhongpei,Yang Hong.Turbo-codes Multilevel Modulation and Their Performance[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2000(6). |
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| Authors: | Zhang Zhongpei Yang Hong |
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| Abstract: | In this paper, the recently proposed Turbo-codes are applied to multilevel modulation, then to multistage decoding. Base on the information theory, the method of designing rates and interleaving lengths of Turbo-codes is proposed. Let the lower levels codes have higher correct error capacities, and the higher levels codes have higher transmission capacities, the transmission rate of the system is improved. The performance of Turbo multilevel codes is analyzed, and its formula of error rate is obtained. Simulation results show the validity of the design scheme and the formula. |
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| Keywords: | multilevel code multistage decode weight distribution Turbo c |
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