Please use this identifier to cite or link to this item: https://doi.org/10.1109/TSP.2012.2199984
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dc.titleOptimal energy allocation for wireless communications with energy harvesting constraints
dc.contributor.authorHo, C.K.
dc.contributor.authorZhang, R.
dc.date.accessioned2014-06-19T03:21:56Z
dc.date.available2014-06-19T03:21:56Z
dc.date.issued2012
dc.identifier.citationHo, C.K., Zhang, R. (2012). Optimal energy allocation for wireless communications with energy harvesting constraints. IEEE Transactions on Signal Processing 60 (9) : 4808-4818. ScholarBank@NUS Repository. https://doi.org/10.1109/TSP.2012.2199984
dc.identifier.issn1053587X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/71282
dc.description.abstractWe consider the use of energy harvesters, in place of conventional batteries with fixed energy storage, for point-to-point wireless communications. In addition to the challenge of transmitting in a channel with time selective fading, energy harvesters provide a perpetual but unreliable energy source. In this paper, we consider the problem of energy allocation over a finite horizon, taking into account channel conditions and energy sources that are time varying, so as to maximize the throughput. Two types of side information (SI) on the channel conditions and harvested energy are assumed to be available: causal SI (of the past and present slots) or full SI (of the past, present and future slots). We obtain structural results for the optimal energy allocation, via the use of dynamic programming and convex optimization techniques. In particular, if unlimited energy can be stored in the battery with harvested energy and the full SI is available, we prove the optimality of a water-filling energy allocation solution where the so-called water levels follow a staircase function. © 1991-2012 IEEE.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/TSP.2012.2199984
dc.sourceScopus
dc.subjectConvex optimization
dc.subjectdynamic programming
dc.subjectenergy harvesting
dc.subjectoptimal policy
dc.subjectwireless communications
dc.typeConference Paper
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1109/TSP.2012.2199984
dc.description.sourcetitleIEEE Transactions on Signal Processing
dc.description.volume60
dc.description.issue9
dc.description.page4808-4818
dc.description.codenITPRE
dc.identifier.isiut000307790800023
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