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Optimal Energy Allocation for Wireless Communications With Energy Harvesting Constraints

Open access
Ho, Chin Keong, Zhang, Rui·2012·IEEE Transactions on Signal Processing

Abstract

We 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.

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Metadata

Authors
Ho, C. K., & Zhang, R.
Venue
IEEE Transactions on Signal Processing
Published
2012-09
Volume
60
Issue
9
Pages
4808-4818
ISSN
  • 1053-587X (ISSN-L)
  • 1941-0476
OpenAlex
W1794490453
Cited by
698
References
12
FWCI
52.70
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Optimal Energy Allocation for Wireless Communications With Energy Harvesting Constraints. https://app.cochat.ai/papers/10.1109/tsp.2012.2199984
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Ho, C. K., & Zhang, R. (2012). Optimal Energy Allocation for Wireless Communications With Energy Harvesting Constraints. IEEE Transactions on Signal Processing. https://doi.org/10.1109/tsp.2012.2199984

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