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ACIVS
2006
Springer

Scalable and Channel-Adaptive Unequal Error Protection of Images with LDPC Codes

11 years 7 months ago
Scalable and Channel-Adaptive Unequal Error Protection of Images with LDPC Codes
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.
Adrian Munteanu, Maryse R. Stoufs, Jan Cornelis, P
Added 13 Jun 2010
Updated 13 Jun 2010
Type Conference
Year 2006
Where ACIVS
Authors Adrian Munteanu, Maryse R. Stoufs, Jan Cornelis, Peter Schelkens
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