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Two step SOVA-based decoding algorithm for tailbiting codes

Published: 01 July 2009 Publication History

Abstract

In this work we propose a novel decoding algorithm for tailbiting convolutional codes and evaluate its performance over different channels. The proposed method consists on a fixed two-step Viterbi decoding of the received data. In the first step, an estimation of the most likely state is performed based on a SOVA decoding. The second step consists of a conventional Viterbi decoding that employs the state estimated in the previous step as the initial and final states of the trellis. Simulations results show a performance close to that of maximum-likelihood decoding.

References

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R. Y. Shao, S. Lin, and M. P. C. Fossorier, "Two decoding algorithms for tailbiting codes," IEEE Trans. Commun., vol. 10, pp. 1658-1665, Oct. 2003.
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H.-T. Pai, Y. S. Han, T.-Y. Wu, P.-N. Chen, and S.-L. Shieh, "Low-complexity ML decoding for convolutional tail-biting codes," IEEE Commun. Lett., vol. 12, pp. 883-885, Dec. 2008.
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J. Hagenauer and P. Hoeher, "A Viterbi algorithm with soft-decision outputs and its applications," in IEEE Global Telecommunications Conference , Dallas, USA, Nov. 1989.
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Cited By

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  • (2018)A* based algorithm for reduced complexity ML decoding of tailbiting codesIEEE Communications Letters10.1109/LCOMM.2010.072310.10029514:9(854-856)Online publication date: 13-Dec-2018
  • (2010)Improved SOVA-based decoding algorithm for tailbiting codes on wireless channelsProceedings of the 5th IEEE international conference on Wireless pervasive computing10.5555/1856330.1856342(63-68)Online publication date: 5-May-2010

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      Published In

      cover image IEEE Communications Letters
      IEEE Communications Letters  Volume 13, Issue 7
      July 2009
      96 pages

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      IEEE Press

      Publication History

      Published: 01 July 2009
      Received: 07 April 2009

      Author Tags

      1. Viterbi algorithm
      2. convolutional codes
      3. decoding
      4. tailbiting

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      • (2018)A* based algorithm for reduced complexity ML decoding of tailbiting codesIEEE Communications Letters10.1109/LCOMM.2010.072310.10029514:9(854-856)Online publication date: 13-Dec-2018
      • (2010)Improved SOVA-based decoding algorithm for tailbiting codes on wireless channelsProceedings of the 5th IEEE international conference on Wireless pervasive computing10.5555/1856330.1856342(63-68)Online publication date: 5-May-2010

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