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2005
Springer

Matched source-channel communication for field estimation in wireless sensor networks

11 years 7 months ago
Matched source-channel communication for field estimation in wireless sensor networks
Abstract— Sensing, processing and communication must be jointly optimized for efficient operation of resource-limited wireless sensor networks. We propose a novel source-channel matching approach for distributed field estimation that naturally integrates these basic operations and facilitates a unified analysis of the impact of key parameters (number of nodes, power, field complexity) on estimation accuracy. At the heart of our approach is a distributed source-channel communication architecture that matches the spatial scale of field coherence with the spatial scale of node synchronization for phase-coherent communication: the sensor field is uniformly partitioned into multiple cells and the nodes in each cell coherently communicate simple statistics of their measurements to the destination via a dedicated noisy multiple access channel (MAC). Essentially, the optimal field estimate in each cell is implicitly computed at the destination via the coherent spatial averaging inhere...
Waheed Uz Zaman Bajwa, Akbar M. Sayeed, Robert D.
Added 27 Jun 2010
Updated 27 Jun 2010
Type Conference
Year 2005
Where IPSN
Authors Waheed Uz Zaman Bajwa, Akbar M. Sayeed, Robert D. Nowak
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