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Joint channel decoding of spatially and temporally correlated data in wireless sensor networks

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4 Author(s)
Kobayashi, K. ; Dept. of Electr. Eng. & Comput. Sci., Nagoya Univ., Nagoya ; Yamazato, T. ; Okada, H. ; Katayama, M.

In densely deployed wireless sensor networks, sensor observations are spatially correlated. Furthermore, the nature of physical phenomena constitutes a temporal correlation between transmitted observations of an individual sensor node. In this paper, we propose a joint iterative channel decoding scheme using turbo codes. The proposed decoder exploits the spatial and temporal correlations of two binary data sequences to achieve additional coding gain. Simultaneously exploiting the spatial and temporal correlation, the proposed decoder achieves large performance gain.

Published in:

Information Theory and Its Applications, 2008. ISITA 2008. International Symposium on

Date of Conference:

7-10 Dec. 2008