Online throughput maximization in an energy harvesting multiple access channel with fading

Jing Yang, Jingxian Wu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

In this paper, we consider an energy harvesting multiple access channel (MAC) where the transmitters are powered by energy harvested from the ambient environment. We assume that the energy harvesting processes at the transmitters can be modeled as independent Bernoulli processes with parameters λis, and the channel states between the transmitters and the receiver are independent Bernoulli processes with parameter μis. An active transmitter always transmits with a fixed power and consumes one unit amount of energy in a time slot. Under the assumption that μi ≥ λi, Ai, our objective is to schedule the transmissions adaptively according to the instantaneous channel and battery states of transmitters, so that the long-term average sum-throughput of the MAC is maximized in expectation. We first show that for a general asymmetric scenario where λis and μis are not identical across the transmitters, the expected long-term average sum-throughput has an upper bound for any transmission scheduling policy satisfying the energy causality constraints. We then consider a special symmetric scenario where λis and μis are uniform among transmitters. We propose a randomized longest-connected-queue transmission scheduling policy and show that it achieves the upper bound almost surely as time T approaches infinity, thus it is optimal.

Original languageEnglish (US)
Title of host publicationProceedings - 2015 IEEE International Symposium on Information Theory, ISIT 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2727-2731
Number of pages5
ISBN (Electronic)9781467377041
DOIs
Publication statusPublished - Sep 28 2015
EventIEEE International Symposium on Information Theory, ISIT 2015 - Hong Kong, Hong Kong
Duration: Jun 14 2015Jun 19 2015

Publication series

NameIEEE International Symposium on Information Theory - Proceedings
Volume2015-June
ISSN (Print)2157-8095

Other

OtherIEEE International Symposium on Information Theory, ISIT 2015
CountryHong Kong
CityHong Kong
Period6/14/156/19/15

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All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Information Systems
  • Modeling and Simulation
  • Applied Mathematics

Cite this

Yang, J., & Wu, J. (2015). Online throughput maximization in an energy harvesting multiple access channel with fading. In Proceedings - 2015 IEEE International Symposium on Information Theory, ISIT 2015 (pp. 2727-2731). [7282952] (IEEE International Symposium on Information Theory - Proceedings; Vol. 2015-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISIT.2015.7282952