The energy harvesting and energy cooperating two-way channel with finite-sized batteries

Kaya Tutuncuoglu, Aylin Yener

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

    11 Scopus citations

    Abstract

    In this paper, we consider the energy allocation problem for energy harvesting and energy cooperating nodes with finite-sized batteries. In particular, we solve the sum-throughput maximization problem in a two-way channel with energy harvesting nodes that can also transfer energy to one another. To do so, we non-trivially extend a class of policies which originally rely on an infinite-sized battery to be optimal, to the finite battery case. We observe that when we partition transferred energy into immediately used and stored components, an optimal policy has a non-zero stored component only when the battery of the transferring user is full. This enables the decomposition of the sum-throughput maximization problem into separate energy transfer and power allocation problems. Utilizing properties of this optimal class of policies, we solve the power allocation problem using a two dimensional directional water-filling algorithm with restricted transfers, where energy transfers only take place at full battery instances. Numerical results demonstrate that energy cooperation notably improves sum-throughput as one node gets energy deprived.

    Original languageEnglish (US)
    Title of host publication2014 IEEE Global Communications Conference, GLOBECOM 2014
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1424-1429
    Number of pages6
    ISBN (Electronic)9781479935116
    DOIs
    StatePublished - Feb 9 2014
    Event2014 IEEE Global Communications Conference, GLOBECOM 2014 - Austin, United States
    Duration: Dec 8 2014Dec 12 2014

    Publication series

    Name2014 IEEE Global Communications Conference, GLOBECOM 2014

    Other

    Other2014 IEEE Global Communications Conference, GLOBECOM 2014
    CountryUnited States
    CityAustin
    Period12/8/1412/12/14

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    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering
    • Computer Networks and Communications
    • Communication

    Cite this

    Tutuncuoglu, K., & Yener, A. (2014). The energy harvesting and energy cooperating two-way channel with finite-sized batteries. In 2014 IEEE Global Communications Conference, GLOBECOM 2014 (pp. 1424-1429). [7037008] (2014 IEEE Global Communications Conference, GLOBECOM 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GLOCOM.2014.7037008