Sum-Rate Optimal Power Policies for Energy Harvesting Transmitters in an Interference Channel

Kaya Tutuncuoglu, Aylin Yener

    Research output: Contribution to journalArticlepeer-review

    168 Scopus citations

    Abstract

    This paper considers a two-user Gaussian interference channel with energy harvesting transmitters. Different than conventional battery powered wireless nodes, energy harvesting transmitters have to adapt transmission to availability of energy at a particular instant. In this setting, the optimal power allocation problem to maximize the sum throughput with a given deadline is formulated. The convergence of the proposed iterative coordinate descent method for the problem is proved and the short-term throughput maximizing offline power allocation policy is found. Examples for interference regions with known sum capacities are given with directional water-filling interpretations. Next, stochastic data arrivals are addressed. Finally, online and/or distributed near-optimal policies are proposed. Performance of the proposed algorithms are demonstrated through simulations.

    Original languageEnglish (US)
    Pages (from-to)151-161
    Number of pages11
    JournalJournal of Communications and Networks
    Volume14
    Issue number2
    DOIs
    StatePublished - Apr 12 2012

    All Science Journal Classification (ASJC) codes

    • Information Systems
    • Computer Networks and Communications

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