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

Kaya Tutuncuoglu; Aylin Yener

doi:10.1109/JCN.2012.6253063

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

Kaya Tutuncuoglu, Aylin Yener

Research output: Contribution to journal › Article › peer-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 language	English (US)
Pages (from-to)	151-161
Number of pages	11
Journal	Journal of Communications and Networks
Volume	14
Issue number	2
DOIs	https://doi.org/10.1109/JCN.2012.6253063
State	Published - Apr 12 2012

All Science Journal Classification (ASJC) codes

Information Systems
Computer Networks and Communications

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