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Modified Structures of Viterbi Alogrithm for Forced-State Method in Concatenated Coding System of ISDB-T

  • Zhian Zheng
  • Yoshitomo Kaneda
  • Dang Hai Pham
  • Tomohisa Wada
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6059)

Abstract

Iterative decoding based on forced-state method is applied for improving the decoding performance for concatenated coding system. In the application targeted here, this iterative decoding method is proposed for channel decoding of Japan Terrestrial Digital TV (ISDB-T). Modified structure of Viterbi algorithm that operates on quantized data with regard to implementation of the iterative decoding is presented. In general, knowledge about the implementation of conventional Viterbi algorithm can be applied to the modified Viterbi algorithm. The computational kernel of the proposed structure is the path metric calculation and the trace back for Viterbi algorithm with forced-state method based on quantized data.

Keywords

ISDB-T Concatenated coding Convolutional codes Reed-Solomon codes Viterbi algortihm BM algorithm forced-state decoding 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Zhian Zheng
    • 1
  • Yoshitomo Kaneda
    • 2
  • Dang Hai Pham
    • 3
  • Tomohisa Wada
    • 1
    • 2
  1. 1.Information Engineering Department, Graduate School of Engineering and ScienceUniversity of the RyukyusOkinawaJapan
  2. 2.Magna Design Net, IncOkinawaJapan
  3. 3.Faculty of Electronics and TelecommunicationsHonoi Universtiy of TechnologyHanoiVietnam

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