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A Channel Optimized Vector Quantizer Based on Equidistortion Principal and Wavelet Transform

  • Wang Yue
Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 236)

Abstract

The paper presents a new algorithm to design channel optimized vector quantizer(COVQ) based on the equidistortion principal and wavelet transform. The algorithm creates new codebook vector which is in the near place of the sub region with the biggest sub-distortion and then replaces the codebook vector with the smallest subdistortion with this new codebook vector, therefore to equilibrate sub-distortion of all sub regions. The algorithm achieves a significant improvement of COVQ performance under noisy channel, as confirmed by experimental results.

Keywords

COVQ wavelet transform noisy channel equidistortion principal 

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References

  1. 1.
    Linde, Y., Buzo, A., Gray, R.M.: An algorithm for vector quantizer design. IEEE Trans. Commun., COM 28(1), 84–95 (1980)CrossRefGoogle Scholar
  2. 2.
    Glover, F., Laguna, M.: Tabu Search, pp. 1–354. Kluwer Academic Publishers, Dordrecht (1997)CrossRefzbMATHGoogle Scholar
  3. 3.
    Cierniak, R., Rutkowski, L.: On image compression by competitive neural networks and optimal linear predictors. SP.Image Communication 15, 559–565 (2000)Google Scholar
  4. 4.
    Pan, J.S., McInnes, F.R., Jack, M.A.: VQ Codebook Design Using Genetic Algorithms. Electronics Letters 31(17), 1418–1419 (1995)CrossRefGoogle Scholar
  5. 5.
    Zeger, K., Gersho, A.: Pseudo-Gray coding. IEEE Trans. Commun. 38(12), 2147–2158 (1990)CrossRefGoogle Scholar
  6. 6.
    Ueda, N., Nakano, R.: A new competitive learning approach based on an equidistortion principle for designing optimal vector quantizers. Neural Networks 7(8), 1211–1227 (1994)CrossRefGoogle Scholar
  7. 7.
    Saffar, H.E., Alajaji, F.: COVQ for MAP Hard-decision Demodulated Channels. IEEE Communication letters 13(1) (January 2009)Google Scholar
  8. 8.
    Li, T., Yu, S., Zhang, G.: An vector quantizer index assignment. The journal of electronical 30(6), 876–879 (2002)MathSciNetGoogle Scholar
  9. 9.
    Daubechies, I.: Ten Lectures on Wavelets. Rutgers University and AT&T Bell Laboratories (1992)Google Scholar
  10. 10.
    Shapiro, J.M.: Embedded image coding using zerotrees of wavelet coefficients. IEEE Trans. On SP 41(12), 3445–3462 (1993)CrossRefzbMATHGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Wang Yue
    • 1
  1. 1.Institute of Electronic InformationZhejiang Gongshang UniversityHangzhouP.R. China

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