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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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WRAP-energy-efficient-communication-user-relay-aided-cellular-networks-OFDMA-Chen-2019.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only until 7 January 2020. Contact author directly, specifying your specific needs. - Requires a PDF viewer. Download (1884Kb) |
Official URL: http://dx.doi.org/10.1016/j.phycom.2018.12.021
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 | ||||||||
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| 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 | ||||||||
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| Date of first compliant deposit: | 14 February 2019 | ||||||||
| 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: |
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