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|Title:||Transmission schemes for lifetime maximization in wireless sensor networks: Uncorrelated source observations||Authors:||Xiaolu, Z.
|Issue Date:||2007||Citation:||Xiaolu, Z.,Meixia, T.,Chun, S.N. (2007). Transmission schemes for lifetime maximization in wireless sensor networks: Uncorrelated source observations. GLOBECOM - IEEE Global Telecommunications Conference : 3694-3698. ScholarBank@NUS Repository. https://doi.org/10.1109/GLOCOM.2007.701||Abstract:||We study transmission schemes for lifetime maximization in wireless sensor networks. Specifically we consider the network where all the sensors observe uncorrelated signals and forward the quantized observations to a common fusion center. We demonstrate how the minimum node lifetime is maximized under individual estimation accuracy constraints through adapting transmission times and powers assigned to different sensor nodes. A partially distributed algorithm is proposed to implement joint time sharing and power control, for which each sensor node only needs local information and little common information. In addition, we obtain a necessary and sufficient condition for convergence of the algorithm. Simulation results show a significant lifetime gain over existing schemes, especially when the sensing environment becomes more heterogeneous and the number of nodes increases. © 2007 IEEE.||Source Title:||GLOBECOM - IEEE Global Telecommunications Conference||URI:||http://scholarbank.nus.edu.sg/handle/10635/72081||ISBN:||1424410436||DOI:||10.1109/GLOCOM.2007.701|
|Appears in Collections:||Staff Publications|
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