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dc.titleTransmission schemes for lifetime maximization in wireless sensor networks: Uncorrelated source observations
dc.contributor.authorXiaolu, Z.
dc.contributor.authorMeixia, T.
dc.contributor.authorChun, S.N.
dc.identifier.citationXiaolu, 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. <a href="" target="_blank"></a>
dc.description.abstractWe 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.
dc.typeConference Paper
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.sourcetitleGLOBECOM - IEEE Global Telecommunications Conference
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