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Wireless Networks
Erschienen in: Wireless Networks 5/2018

13.01.2017

Energy efficient resource allocation in two-tier OFDMA networks with QoS guarantees

verfasst von: Meysam Masoudi, Hamidreza Zaefarani, Abbas Mohammadi, Cicek Cavdar

Erschienen in: Wireless Networks | Ausgabe 5/2018

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Abstract

In this paper, we introduce the joint power and subchannel allocations techniques for OFDMA based femtocell networks with focus on uplink direction. These techniques minimize the aggregate power of all Femto user equipment and maximize the total system energy efficiency while satisfying the minimum required rate of all users. An interference limit constraint is also considered to protect the QoS of macrocells . The original problem is a mixed-integer non-convex optimization problem which is converted to a convex problem using the time-sharing concept. Furthermore, Three algorithms are proposed to provide a scheme to optimize the goal function while meeting the constraints. The complexity order of all algorithms was investigated and was compared to other alternative solutions. The analytic and simulation results have demonstrated that the proposed algorithms could achieve significant power saving and better energy efficiency compared to existing algorithms.
Vorheriger Artikel A distributed spectrum handoff MSRV protocol for the cognitive radio ad hoc networks

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Metadaten
Titel
Energy efficient resource allocation in two-tier OFDMA networks with QoS guarantees
verfasst von
Meysam Masoudi
Hamidreza Zaefarani
Abbas Mohammadi
Cicek Cavdar
Publikationsdatum
13.01.2017
Verlag
Springer US
Erschienen in
Wireless Networks / Ausgabe 5/2018
Print ISSN: 1022-0038
Elektronische ISSN: 1572-8196
DOI
https://doi.org/10.1007/s11276-016-1442-5

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