Hu, Jie and Xu, Ke and Xiang, Luping and Yang, Kun (2023) Orthogonal-Time-Frequency-Space Signal Design for Integrated Data and Energy Transfer: Benefits from Doppler Offsets. IEEE Wireless Communications Letters, 12 (4). pp. 689-693. DOI https://doi.org/10.1109/lwc.2023.3239742
Hu, Jie and Xu, Ke and Xiang, Luping and Yang, Kun (2023) Orthogonal-Time-Frequency-Space Signal Design for Integrated Data and Energy Transfer: Benefits from Doppler Offsets. IEEE Wireless Communications Letters, 12 (4). pp. 689-693. DOI https://doi.org/10.1109/lwc.2023.3239742
Hu, Jie and Xu, Ke and Xiang, Luping and Yang, Kun (2023) Orthogonal-Time-Frequency-Space Signal Design for Integrated Data and Energy Transfer: Benefits from Doppler Offsets. IEEE Wireless Communications Letters, 12 (4). pp. 689-693. DOI https://doi.org/10.1109/lwc.2023.3239742
Abstract
Integrated data and energy transfer (IDET) is an advanced technology for enabling energy sustainability for massively deployed low-power electronic consumption components. However, the existing work of IDET using the orthogonal-frequency-division-multiplexing (OFDM) waveforms is designed for static scenarios, which would be severely affected by the destructive Doppler offset in high-mobility scenarios. Therefore, we proposed an IDET system based on orthogonal-time-frequency-space (OTFS) waveforms with the imperfect channel assumption, which is capable of counteracting the Doppler offset in high-mobility scenarios. At the transmitter, the OTFS-IDET system superimposes the random data signals and deterministic energy signals in the delay-Doppler (DD) domain with optimally designed amplitudes. The receiver optimally splits the received signal in the power domain for achieving the best IDET performance. After formulating a non-convex optimisation problem, it is transformed into a geometric programming (GP) problem through inequality relaxations to obtain the optimal solution. The simulation demonstrates that a higher amount of energy can be harvested when employing our proposed OTFS-IDET waveforms than the conventional OFDM-IDET ones in high mobility scenarios.
Item Type: | Article |
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Uncontrolled Keywords: | Integrated data and energy transfer (IDET); orthogonal-time-frequency-space (OTFS); delay-Doppler channel; simultaneous wireless information and power transfer (SWIPT); wireless power transfer (WPT); energy sustainability |
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: | 22 Mar 2023 13:25 |
Last Modified: | 30 Oct 2024 20:59 |
URI: | http://repository.essex.ac.uk/id/eprint/35241 |
Available files
Filename: 2302.01697.pdf