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滑动窗在Turbo码解码系统中的应用及改进 被引量:6

Application and lmprovment of Sliding Window in Turbo Decoder
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摘要 Turbo码是近年提出的一种性能优越的信道编码 ,它在编码时采用并行的系统反馈卷积码 (recursivesys tematicconvolutional)编码器 ,解码时则主要采用MAP(maxaposterior)算法 .在本文中 ,笔者尝试将滑动窗 (slidingwindow)技术运用到Turbo码的解码过程中 ,以减少Turbo码的解码延迟 ,并在此基础上提出了一种改进方案 ,在模拟中获得了较好的效果 . Turbo code is a new class of binary parallel concatenated recursive systematic convolutional codes which is normally decoded by MAP algorithms. In this article, a new sliding window was presented in order to reduce the Turbo decoding time, and in the simulation,it performed better than the normal sliding window.
出处 《电子学报》 EI CAS CSCD 北大核心 2000年第9期140-141,98,共3页 Acta Electronica Sinica
关键词 TURBO码 MAP算法 滑动窗 解码 Turbo code MAP algorithm sliding window
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同被引文献30

  • 1刘树军,邓军华,郑建宏.Turbo译码器的log_MAP算法及其实现[J].通信技术,2003,36(2):10-11. 被引量:3
  • 2李建平,梁庆林.Turbo码解码过程中的加权算法[J].电讯技术,2004,44(6):119-121. 被引量:1
  • 3Berrou C. Near Shannon Limit Error-correcting Coding and Decoding: Turbo Codes[C]. Geneva, Switzerland: Proc. ICC' 93, 1996:1064-1070.
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  • 5Dawid H, Meyr H. Real-time Algorithms and VLSI Architectures for Soft Output MAP Convolutional Decoding[J]. In Proc. Personal, Indoor and Mobile Radio Communications, PIMRC' 95, 1995,1(27-29):193~197.
  • 6王新梅,肖国镇.纠错码-原理与方法(修订版)[M].北京:西安电子科技大学出版社,2006.
  • 7BERROU C, THITIM AJSHIMA P. Near Shannon limit error correcting coding and decoding Turbo codes [C]//Proc of ICC'93. Geneva, Switzerland: IEEE, 1993:1064-1070.
  • 83GPP TS 25. 212 v6.6.0 Multiplexing and channel coding(FDD) [S]. 2005.
  • 9L.R. Bahl, J. Cocke, K Jelinek, et al. Optimal decoding of linear codes for minimizing symbol error rate: IEEE Trans. Inform. Theory, 1974, IT-20(3) : 284-287.
  • 10P. Robertson, P. Hoeher, E. Villebrun Optimal and sub-optimal maximum a posteriori algorithms suitable for Turbo decoding[J]. IEEE Trans. On communications Theory, 1997,8(2) : 119-125.

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