Computer Science – Information Theory
Scientific paper
2011-01-03
Computer Science
Information Theory
Submitted to IEEE Transaction on Signal Processing
Scientific paper
In this paper, channel optimized distributed multiple description vector quantization (CDMD) schemes are presented for distributed source coding in symmetric and asymmetric settings. The CDMD encoder is designed using a deterministic annealing approach over noisy channels with packet loss. A minimum mean squared error asymmetric CDMD decoder is proposed for effective reconstruction of a source, utilizing the side information (SI) and its corresponding received descriptions. The proposed iterative symmetric CDMD decoder jointly reconstructs the symbols of multiple correlated sources. Two types of symmetric CDMD decoders, namely the estimated-SI and the soft-SI decoders, are presented which respectively exploit the reconstructed symbols and a posteriori probabilities of other sources as SI in iterations. In a multiple source CDMD setting, for reconstruction of a source, three methods are proposed to select another source as its SI during the decoding. The methods operate based on minimum physical distance (in a wireless sensor network setting), maximum mutual information and minimum end-to-end distortion. The performance of the proposed systems and algorithms are evaluated and compared in detail.
Lahouti Farshad
Valipour Mehrdad
No associations
LandOfFree
Channel Optimized Distributed Multiple Description Coding does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Channel Optimized Distributed Multiple Description Coding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Channel Optimized Distributed Multiple Description Coding will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-238845