Journal of Communications and Networks

  • 제14권2호
  • /
  • Pages.151-161
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  • 2012
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  • 1229-2370(pISSN)
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  • 1976-5541(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

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

  • Tutuncuoglu, Kaya (Wireless Communications and Networking Laboratory (WCAN), Electrical Engineering Department, Pennsylvania State University) ;
  • Yener, Aylin (Wireless Communications and Networking Laboratory (WCAN), Electrical Engineering Department, Pennsylvania State University)
  • 투고 : 2011.10.11
  • 발행 : 2012.04.30
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초록

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.

키워드

참고문헌

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