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Energy-efficient communication for user-relay aided cellular networks with OFDMA

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Baştürk, İlhan, Chen, Yunfei and Alouini, Mohamed-Slim (2019) Energy-efficient communication for user-relay aided cellular networks with OFDMA. Physical Communication, 33 . pp. 153-164. doi:10.1016/j.phycom.2018.12.021

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Official URL: http://dx.doi.org/10.1016/j.phycom.2018.12.021

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Abstract

The dramatic increase of mobile devices and mobile subscriptions for delay-sensitive high-rate multimedia services has caused rapidly rising energy consumption, which is a big problem for the next generation wireless networks. It is urgent to find solutions that can satisfy the high data rate quality of service (QoS) requirements from users and obtain high energy-efficiency (EE) for the network at the same time. In this paper, energy-efficient communication is investigated for the orthogonal frequency-division multiple-access (OFDMA) based user-relay aided cellular networks that is envisioned as a promising technology to unlock the full potential of 5G networks. The EE maximization problem is formulated for dual-hop user-relay aided downlink cellular networks. Decode-and-forward (DF) relaying strategy is used by considering the QoS constraints. Since the formulated problem is a mixed-integer non-linear programming problem (MINLP) that is difficult to solve for multi-carrier, multi-user, multi-relay networks, a two-stage radio resource management solution is proposed to tackle the problem. The advantages of the proposed scheme, which not only considers the EE but also meets the data rate requirements of the users, are revealed by performing extensive simulations.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Orthogonal frequency division multiplexing
Journal or Publication Title: Physical Communication
Publisher: Elsevier BV
ISSN: 18744907
Official Date: April 2019
Dates:
DateEvent
April 2019Published
7 January 2019Available
28 December 2018Accepted
Volume: 33
Page Range: pp. 153-164
DOI: 10.1016/j.phycom.2018.12.021
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
TÜBİTAK-2219Türkiye Bilimsel ve Teknolojik Araştirma Kurumuhttp://dx.doi.org/10.13039/501100004410

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