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A new non-linear joint model for RF energy harvesters in wireless networks
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Al-Qahtani, D., Chen, Yunfei, Feng, W. and Alouini, M-S. (2021) A new non-linear joint model for RF energy harvesters in wireless networks. IEEE Transactions on Green Communications and Networking, 5 (2). pp. 895-907. doi:10.1109/TGCN.2021.3059728 ISSN 2473-2400.
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Official URL: https://doi.org/10.1109/TGCN.2021.3059728
Abstract
Many previous works have treated the conversion efficiency of an energy harvester as a constant or a non-linear function of input power, ignoring the non-linear effect of the operating frequency. Such assumption may lead to erroneous performance analysis or improper resource allocation. In this article, a novel model is proposed to capture the non-linearity of the conversion efficiency as a function of the frequency and power. The paper first exploits the practical harvesters in the literature to model the conversion efficiency as a function of frequency at fixed power. Based on the shape of the efficiency curve, two categories of harvesters are referred to as Type-I and Type-II. The best-fit model for each category is selected based on the adjusted R-square test. Next, these models are extended to jointly consider both power and frequency dependencies. Using these models, the performances of broad-band simultaneous wireless information and power transfer and OFDM hybrid access point are analysed and optimized. Iterative algorithms are used to find low-complexity solutions. Moreover, the impact of the non-linear conversion efficiency on the average battery life in LoRaWAN is analysed. Our results highlight the significant impact of using the joint model of conversion efficiency.
| Item Type: | Journal Article | ||||||||||||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Wireless communication systems , Radio frequency, Energy harvesting | ||||||||||||||||||
| Journal or Publication Title: | IEEE Transactions on Green Communications and Networking | ||||||||||||||||||
| Publisher: | IEEE | ||||||||||||||||||
| ISSN: | 2473-2400 | ||||||||||||||||||
| Official Date: | June 2021 | ||||||||||||||||||
| Dates: |
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| Volume: | 5 | ||||||||||||||||||
| Number: | 2 | ||||||||||||||||||
| Page Range: | pp. 895-907 | ||||||||||||||||||
| DOI: | 10.1109/TGCN.2021.3059728 | ||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||
| Publication Status: | Published | ||||||||||||||||||
| Reuse Statement (publisher, data, author rights): | © 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 | ||||||||||||||||||
| Date of first compliant deposit: | 16 June 2022 | ||||||||||||||||||
| Date of first compliant Open Access: | 16 June 2022 | ||||||||||||||||||
| RIOXX Funder/Project Grant: |
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| Is Part Of: | 1 | ||||||||||||||||||
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