TY - GEN
T1 - An improved approximate decoding with correlated sources
AU - Kwon, Minhae
AU - Park, Hyunggon
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - Network coding
KW - ad hoc networks
KW - approximate decoding
KW - correlated source data
KW - distributed delivery
UR - http://www.scopus.com/inward/record.url?scp=80054889731&partnerID=8YFLogxK
U2 - 10.1117/12.892917
DO - 10.1117/12.892917
M3 - Conference contribution
AN - SCOPUS:80054889731
SN - 9780819487452
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Applications of Digital Image Processing XXXIV
T2 - Applications of Digital Image Processing XXXIV
Y2 - 22 August 2011 through 24 August 2011
ER -