Please use this identifier to cite or link to this item: https://doi.org/10.1109/WCL.2014.012914.130840
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dc.titleOptimal power allocation for wireless sensor networks with outage constraint
dc.contributor.authorHuang, C.
dc.contributor.authorZhang, R.
dc.contributor.authorCui, S.
dc.date.accessioned2014-10-07T04:34:07Z
dc.date.available2014-10-07T04:34:07Z
dc.date.issued2014
dc.identifier.citationHuang, C., Zhang, R., Cui, S. (2014). Optimal power allocation for wireless sensor networks with outage constraint. IEEE Wireless Communications Letters 3 (2) : 209-212. ScholarBank@NUS Repository. https://doi.org/10.1109/WCL.2014.012914.130840
dc.identifier.issn21622345
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/82840
dc.description.abstractThis letter considers the power allocation problem for a wireless sensor network, where N distributed sensors transmit delay-limited high rate traffic to a fusion center (FC) via orthogonal channels. The system-level outage event is defined as that the FC can decode none of the messages from the N sensors. We formulate the outage probability minimization problem with a sum power constraint, and show that this problem, albeit being non-convex, possesses an interesting «concave-convex» property in the reformulated form. By exploiting this property, the problem is shown to be solvable optimally via a one-dimension search. Its counterpart problem, i.e., minimizing the sum power consumption with a targeted outage probability, is also solved. Finally, numerical results show that the proposed power allocation can significantly improve the system performance compared to the conventional uniform power allocation. © 2012 IEEE.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/WCL.2014.012914.130840
dc.sourceScopus
dc.subjectnon-convex optimization
dc.subjectoutage probability
dc.subjectpower allocation
dc.subjectWireless sensor networks
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1109/WCL.2014.012914.130840
dc.description.sourcetitleIEEE Wireless Communications Letters
dc.description.volume3
dc.description.issue2
dc.description.page209-212
dc.identifier.isiut000209681200023
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