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Energy-efficiency for MISO-OFDMA based user-relay assisted cellular networks
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Baştürk, İlhan and Chen, Yunfei (2020) Energy-efficiency for MISO-OFDMA based user-relay assisted cellular networks. IEEE Systems Journal, 14 (4). pp. 5274-5283. doi:10.1109/JSYST.2020.2971022
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WRAP-energy-efficiency-miso-ofdma-based-user-relay-assisted-cellular-networks-Chen-2020.pdf - Accepted Version - Requires a PDF viewer. Download (2691Kb) | Preview |
Official URL: https://doi.org/10.1109/JSYST.2020.2971022
Abstract
The concept of improving energy-efficiency (EE) without sacrificing the service quality has become important nowadays. The combination of orthogonal frequency-division multiple-access (OFDMA) multi-antenna transmission technology and relaying is one of the key technologies to deliver the promise of reliable and high-data-rate coverage in the most cost-effective manner. In this paper, EE is studied for the downlink multiple-input single-output (MISO)-OFDMA based user-relay assisted cellular networks. EE maximization is formulated for decode and forward (DF) relaying scheme with the consideration of both transmit and circuit power consumption as well as the data rate requirements for the mobile users. The quality of-service (QoS)-constrained EE maximization, which is defined for multi-carrier, multi-user, multi-relay and multi-antenna networks, is a non-convex and combinatorial problem so it is hard to tackle. To solve this difficult problem, a radio resource management (RRM) algorithm that solves the subcarrier allocation, mode selection and power allocation separately is proposed. The efficiency of the proposed algorithm is demonstrated by numerical results for different system parameters
| 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): | Wireless communication systems -- Energy consumption, Energy conservation, Energy consumption, Radio -- Transmitters and transmission, Orthogonal frequency division multiplexing | ||||||||
| Journal or Publication Title: | IEEE Systems Journal | ||||||||
| Publisher: | Institute of Electrical and Electronics Engineers | ||||||||
| ISSN: | 1932-8184 | ||||||||
| Official Date: | December 2020 | ||||||||
| Dates: |
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| Volume: | 14 | ||||||||
| Number: | 4 | ||||||||
| Page Range: | pp. 5274-5283 | ||||||||
| DOI: | 10.1109/JSYST.2020.2971022 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Publisher Statement: | © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| RIOXX Funder/Project Grant: |
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