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Energy-Aware Wireless Relay Selection in Load-Coupled OFDMA Cellular Networks
Linkoping Univ, Dept Sci & Technol, S-60174 Linkoping, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computing Science. Linkoping Univ, Dept Sci & Technol, S-60174 Linkoping, Sweden..
Linkoping Univ, Dept Sci & Technol, S-60174 Linkoping, Sweden..ORCID iD: 0000-0003-4416-7702
Linkoping Univ, Dept Sci & Technol, S-60174 Linkoping, Sweden..
2017 (English)In: IEEE Communications Letters, ISSN 1089-7798, E-ISSN 1558-2558, Vol. 21, no 1, 144-147 p.Article in journal (Refereed) Published
Abstract [en]

We investigate transmission energy minimization via optimizing wireless relay selection in orthogonal-frequency-division multiple access networks. We take into account the impact of the load of cells on transmission energy. We prove the NP-hardness of the energy-aware wireless relay selection problem. To tackle computational complexity, a partial optimality condition is derived for providing insights in respect of designing an effective and efficient algorithm. Numerical results show the resulting algorithm achieves high energy performance.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2017. Vol. 21, no 1, 144-147 p.
Keyword [en]
Heterogeneous network, wireless relay, OFDMA, energy efficiency
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:uu:diva-319321DOI: 10.1109/LCOMM.2016.2615604ISI: 000393788000036OAI: oai:DiVA.org:uu-319321DiVA: diva2:1087969
Available from: 2017-04-10 Created: 2017-04-10 Last updated: 2017-04-10Bibliographically approved

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