This paper considers the design of an optimal joint source-channel coding system employing scalable wavelet-based source coders and unequal error protection for error-resilient transmission over binary erasure channels. We theoretically show that the expected average rate-distortion function in the separately encoded subbands is convex with monotonically decreasing slopes and use this fact to propose a new algorithm which minimizes the end-to-end distortion. This algorithm is based on a simplified Viterbi-search followed by Lagrangian-optimization. We show that our proposed solution results in significant complexity reductions while providing very near-to-optimal performance.
Munteanu, A, Stoufs, M, Cornelis, J & Schelkens, P 2006, Scalable and Channel-Adaptive Unequal Error Protection of Images with LDPC Codes. in Advanced Concepts for Intelligent Vision Systems. vol. 4179, Lecture Notes in Computer Science, Springer, pp. 722-733.
Munteanu, A., Stoufs, M., Cornelis, J., & Schelkens, P. (2006). Scalable and Channel-Adaptive Unequal Error Protection of Images with LDPC Codes. In Advanced Concepts for Intelligent Vision Systems (Vol. 4179, pp. 722-733). (Lecture Notes in Computer Science). Springer.
@inbook{b88d7b5017154f7ba99138bfa6cc1db3,
title = "Scalable and Channel-Adaptive Unequal Error Protection of Images with LDPC Codes",
abstract = "This paper considers the design of an optimal joint source-channel coding system employing scalable wavelet-based source coders and unequal error protection for error-resilient transmission over binary erasure channels. We theoretically show that the expected average rate-distortion function in the separately encoded subbands is convex with monotonically decreasing slopes and use this fact to propose a new algorithm which minimizes the end-to-end distortion. This algorithm is based on a simplified Viterbi-search followed by Lagrangian-optimization. We show that our proposed solution results in significant complexity reductions while providing very near-to-optimal performance.",
author = "Adrian Munteanu and Maryse Stoufs and Jan Cornelis and Peter Schelkens",
note = "Lecture Notes in Computer Science, pp. accepted for publication, , Antwerp, Belgium.",
year = "2006",
month = sep,
language = "English",
isbn = "978-3-540-44630-9",
volume = "4179",
series = "Lecture Notes in Computer Science",
publisher = "Springer",
pages = "722--733",
booktitle = "Advanced Concepts for Intelligent Vision Systems",
}