| Turbo码多级调制及性能分析 |
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| 引用本文： | 聂永萍,张中培.Turbo码多级调制及性能分析[J].重庆邮电学院学报(自然科学版),2001,13(1):5-8. |
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| 作者姓名： | 聂永萍 张中培 |
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| 作者单位： | [1]重庆邮电学院，重庆400065 [2]电子科技大学应用物理系，四川成都610054 |
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| 摘 要： | 将Turbo码进行你级调制，然后进行多步译码。根据信息理论，将Turbo码设计出不同的码率，让低层码具有较高的纠错能力，而让高层码具有较高的传输信息的能力，从而提高系统传输率，并对Turbo码多级调制的误码性能进行分析，得出误码率计算公式,还对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 多级调制 性能分析 |
Using Turbo codes in Multilevel Modulation Scheme and Analysis of Their Performance |
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| NIE Yong pin ,ZHANG Zhong pei.Using Turbo codes in Multilevel Modulation Scheme and Analysis of Their Performance[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2001,13(1):5-8. |
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| Authors: | NIE Yong pin ZHANG Zhong pei |
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| Institution: | NIE Yong pin 1,ZHANG Zhong pei 2 |
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| Abstract: | The recently proposed Turbo codes are applied to multilevel modulation, then multistage decoding. Based on the information theory, the authors make the design of Turbo codes with different rates and interleaving length, make lower levels codes with higher correct error capacities, and higher levels codes with higher transmission capacities so as to improve transmission rate of the system. The performance of Turbo multilevel codes is analyzed, and its formula of error rate is obtained. Simulation result proves the validity of the design scheme and the formula. |
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| Keywords: | multilevel code multistage decode weight distribution Turbo code |
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