Yue, Qingdong and Hu, Jie and Yang, Kun and Yu, Qin (2023) Joint Transceiving and Reflecting Design for Intelligent Reflecting Surface Aided Wireless Power Transfer. IEEE Transactions on Wireless Communications, 22 (11). pp. 7478-7491. DOI https://doi.org/10.1109/twc.2023.3251743
Yue, Qingdong and Hu, Jie and Yang, Kun and Yu, Qin (2023) Joint Transceiving and Reflecting Design for Intelligent Reflecting Surface Aided Wireless Power Transfer. IEEE Transactions on Wireless Communications, 22 (11). pp. 7478-7491. DOI https://doi.org/10.1109/twc.2023.3251743
Yue, Qingdong and Hu, Jie and Yang, Kun and Yu, Qin (2023) Joint Transceiving and Reflecting Design for Intelligent Reflecting Surface Aided Wireless Power Transfer. IEEE Transactions on Wireless Communications, 22 (11). pp. 7478-7491. DOI https://doi.org/10.1109/twc.2023.3251743
Abstract
In an intelligent reflecting surface (IRS) aided wireless power transfer (WPT) system, a practical architecture of an energy receiver (ER) is proposed, which includes multiple receive antennas, an analog energy combiner, a power splitter and multiple energy harvesters. In order to maximise the output direct-current (DC) power, the transmit beamformer of the transmitter, the passive beamformer of the IRS, the energy combiner, and the power splitter of the ER are jointly optimised. The optimisation problem is equivalently divided into two sub-problems, which independently maximises the input RF power and the output DC power of the energy harvesters, respectively. A successive linear approximation (SLA) based algorithm with a low complexity is proposed to maximise the input RF power to the energy harvesters, which converges to a Karush-Kuhn-Tucker (KKT) point. We also propose an improved greedy randomized adaptive search procedure (I-GRASP) based algorithm having better performance to maximise the input RF power. Furthermore, the optimal power splitter for maximising the output DC power of the energy harvesters is derived in closed-form. The numerical results are provided to verify the performance advantage of the IRS-aided WPT and to demonstrate that conceiving the optimised energy combiner achieves better WPT performance than the deterministic counterpart.
Item Type: | Article |
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Uncontrolled Keywords: | Wireless power transfer (WPT); Intelligent reflecting surface (IRS); Power splitter; MIMO; Energy harvester architecture; Multiple non-linear rectifers |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 04 May 2023 11:40 |
Last Modified: | 11 Nov 2023 21:57 |
URI: | http://repository.essex.ac.uk/id/eprint/35503 |
Available files
Filename: Joint_Transceiving_and_Reflecting_Design_for_Intelligent_Reflecting_Surface_Aided_Wireless_Power_Transfer.pdf