An improved approximate decoding with correlated sources

Minhae Kwon; Hyunggon Park

doi:10.1117/12.892917

24 September 2011 An improved approximate decoding with correlated sources

Minhae Kwon, Hyunggon Park

Proceedings Volume 8135, Applications of Digital Image Processing XXXIV; 81350Q (2011) https://doi.org/10.1117/12.892917
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

We consider ad hoc sensor network topologies that aim for distributed delivery of correlated delay-sensitive data. In order for efficient data delivery, network coding technique in conjunction with approximate decoding algorithm is deployed. The approximate decoding algorithm enables receivers to recover the original source data even when the number of received data packets is not sufficient for decoding. Therefore, it leads to significantly improved decoding performance and enhanced robustness for delay-sensitive data. In this paper, we further improve the approximate decoding algorithm by explicitly considering the characteristics of the correlation. Specifically, we study the case where the source data are correlated by a simple linear correlation, which is quantified by a similarity factor. We investigate several properties of the proposed algorithm and analyze the impact of the similarity factor on the decoding performance. Our experimental results confirm the properties of the proposed approximate decoding algorithm with linear correlation.

Citation Download Citation

Minhae Kwon and Hyunggon Park "An improved approximate decoding with correlated sources", Proc. SPIE 8135, Applications of Digital Image Processing XXXIV, 81350Q (24 September 2011); https://doi.org/10.1117/12.892917

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