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Mobile Fog Computing-Assisted Resource Allocation for Two-Hop SWIPT OFDM Networks
Joint Authors
Kang, Shaoli
Di, Xiaofei
Zhang, Yu
Liu, Tong
Zhao, Yue
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-09-27
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Information Technology and Computer Science
Abstract EN
The mobile fog computing-assisted resource allocation (RA) is studied for simultaneous wireless information and power transfer (SWIPT) two-hop orthogonal frequency division multiplexing (OFDM) networks, where a decode-and-forward (DF) relay first harvests energy from signals emitted by a source and then helps the source to forward information to its destination by using the harvested energy.
Power splitting (PS) strategy is adopted at the relay and a different PS (DPS) receiver architecture is proposed, where the PS factors of all subcarriers are different.
A RA problem is formulated to maximize the system’s achievable rate by jointly optimizing subcarrier pairing, power allocation, and PS factors.
Since the RA problem is a nonconvex problem and is difficult to solve, an efficient RA algorithm is designed.
As the wireless channels are fast time-varying, the computation is performed in mobile fog node close to end nodes, instead of remote clouds.
Results demonstrate that the achievable rate is significantly increased by using the proposed RA algorithm.
It is also found that the computation complexity of RA algorithm of DPS receiver architecture is much lower than the existing identical PS (IPS) receiver architecture, and thus the proposed DPS architecture is more suitable for computation-constrained fog system.
American Psychological Association (APA)
Di, Xiaofei& Zhang, Yu& Liu, Tong& Kang, Shaoli& Zhao, Yue. 2018. Mobile Fog Computing-Assisted Resource Allocation for Two-Hop SWIPT OFDM Networks. Wireless Communications and Mobile Computing،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1216245
Modern Language Association (MLA)
Di, Xiaofei…[et al.]. Mobile Fog Computing-Assisted Resource Allocation for Two-Hop SWIPT OFDM Networks. Wireless Communications and Mobile Computing No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1216245
American Medical Association (AMA)
Di, Xiaofei& Zhang, Yu& Liu, Tong& Kang, Shaoli& Zhao, Yue. Mobile Fog Computing-Assisted Resource Allocation for Two-Hop SWIPT OFDM Networks. Wireless Communications and Mobile Computing. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1216245
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1216245