Adaptive resolution-constrained scalar multiple-description coding

We consider adaptive two-channel multiple-description coding. We provide an analytical method for designing a resolutionconstrained symmetrical multiple-description coder that uses an index assignment matrix. We use existing index assignment algorithms that are known for their good properties within our adaptive multiple-description coding architecture. These existing index assignment algorithms are parameterized and the coefficient of quantization of the side coders is described by a rational function. This leads to an analytical solution for the design problem, facilitating real-time adaptation based on information provided by feedback channels or rate conditions imposed by network management. Our experimental results show that the practical performance closely approximates theoretically obtained optimal behavior.

• Type: Conference
• Year: 2008
• Where: ICASSP
• Authors: Janusz Klejsa, Marcin Kuropatwinski, W. Bastiaan Kleijn
• Keywords: ICASSP 2008, Index Assignment, Index Assignment Algorithms, Index Assignment Matrix, Signal Processing