Aćimović, Jugoslava and Beferull-Lozano, Baltasar and Cristescu, Răzvan (2005) Adaptive distributed algorithms for power-efficient data gathering in sensor networks. In: 2005 International Conference on Wireless Networks, Communications and Mobile Computing. IEEE , New York, NY , pp. 946-951. ISBN 0-7803-9305-8 http://resolver.caltech.edu/CaltechAUTHORS:20110513-093140670
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In this work, we consider the problem of designing adaptive distributed processing algorithms in large sensor networks that are efficient in terms of minimizing the total power spent for gathering the spatially correlated data from the sensor nodes to a sink node. We take into account both the power spent for purposes of communication as well as the power spent for local computation. Our distributed algorithms are also matched to the nature of the correlated field, namely, for piecewise smooth signals, we provide two distributed multiresolution wavelet-based algorithms, while for correlated Gaussian fields, we use distributed prediction based processing. In both cases, we provide distributed algorithms that perform network division into groups of different sizes. The distribution of the group sizes within the network is the result of an optimal trade-off between the local communication inside each group needed to perform decorrelation, the communication needed to bring the processed data (coefficients) to the sink and the local computation cost, which grows as the network becomes larger. Our experimental results show clearly that important gains in power consumption can be obtained with respect to the case of not performing any distributed decorrelating processing.
|Item Type:||Book Section|
|Additional Information:||© 2005 IEEE. Issue Date: 13-16 June 2005. Date of Current Version: 05 December 2005. This work was supported (in part) by the National Competence Center in Research on Mobile Information and Communications Systems (NCCR-MICS). supported buy the Swiss National Science Foundation under Grant Number 5005-67322.|
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|Official Citation:||Acimovic, J.; Beferull-Lozano, B.; Cristescu, R.; , "Adaptive distributed algorithms for power-efficient data gathering in sensor networks," Wireless Networks, Communications and Mobile Computing, 2005 International Conference on , vol.2, no., pp. 946- 951 vol.2, 13-16 June 2005 doi: 10.1109/WIRLES.2005.1549540 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1549540&isnumber=33023|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||17 May 2011 17:04|
|Last Modified:||17 May 2011 17:04|
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