A fast and reliable decoding scheme with prior-hash bits in distributed video coding

  • Authors:

  • Xu Song;Zhang Bo;Zhang Lin;Liu Yu

  • Affiliations:

  • Beijing University of Posts and Telecommunications, Beijing, China;Beijing University of Posts and Telecommunications, Beijing, China;Beijing University of Posts and Telecommunications, Beijing, China;Beijing University of Posts and Telecommunications, Beijing, China

  • Venue:
  • Mobility '08 Proceedings of the International Conference on Mobile Technology, Applications, and Systems
  • Year:
  • 2008

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Abstract

Distributed video coding (DVC) has attracted increasing research efforts due to its low-complexity encoding requirements and its applications in wireless video sensor networks for monitoring. This paper proposes a modified Prior-Hash-Based Side-Information Search for decoding Scheme in DVC. LDPC is introduced to produce the syndromes to realize DVC. And a hash-based side-information search scheme is proposed to get the most possible side information before syndrome decoding, named the Prior-Hash bits scheme. The proposed scheme not only reduces the bits of hash in the encoder, but also greatly decreases the computation complexity and delay in the decoder. Simulation results illustrate the performance of PSNR and the complexity advantages of the proposed scheme compared with the original PRISM [1] scheme.