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Optimal transmission scheduling of hierarchical distributed source coding for wireless sensor networks

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6 Author(s)
Wei-Min Tsai ; Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan ; Chih-Hsiung Tseng ; Chih-Lun Chou ; Ying-Jun Chen
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Distributed source coding (DSC) can be used to compress multiple correlated sensor measurements that do not communicate with each other. These sensors send their compressed data to a central station for joint decoding. However, the issue on designing an optimal transmission scheduling scheme of DSC packets for WSNs have not been well addressed in the literature. In this paper, we proposed a novel DSC coding topology - hierarchical coding topology, which is a construction of inter-node coding dependency with sensing-driven and correlated manner. And the interaction between hierarchical coding topology and transmission will be considered. We optimize the transmission behavior of DSC nodes to achieve better decoding quality. Our proposing approach can be practically applied to any WSN topologies with correlated source coding nodes.

Published in:

Electronics and Information Engineering (ICEIE), 2010 International Conference On  (Volume:1 )

Date of Conference:

1-3 Aug. 2010