Many a Little Makes a Mickle: Probing Backscattering Energy Recycling for Backscatter Communications

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Many a Little Makes a Mickle: Probing Backscattering Energy Recycling for Backscatter Communications
Title:
Many a Little Makes a Mickle: Probing Backscattering Energy Recycling for Backscatter Communications
Journal Title:
IEEE Transactions on Vehicular Technology
Publication Date:
12 September 2022
Citation:
Gu, B., Li, D., Xu, Y., Li, C., & Sun, S. (2022). Many a Little Makes a Mickle: Probing Backscattering Energy Recycling for Backscatter Communications. IEEE Transactions on Vehicular Technology, 1–6. https://doi.org/10.1109/tvt.2022.3205888
Abstract:
In this paper, we investigate and analyze full-duplex-based backscatter communications (BackComs) with multiple backscatter devices (BDs). Different from previous works where only the energy from the energy source is harvested, BDs are also allowed to harvest energy from previous BDs by recycling the backscattering energy. Our objective is to maximize the total energy efficiency (EE) of the system via joint time scheduling, beamforming design, and reflection coefficient (RC) adjustment while satisfying the constraints on the transmission time, the transmit power, the circuit energy consumption (EC) and the achievable throughput for each BD by taking the causality and the non-linearity of energy harvesting (EH) into account. To deal with this intractable non-convex problem, we reformulate the problem by utilizing the Dinkelbach's method. Subsequently, an alternative iterative algorithm is designed to solve it. Simulation results show that the proposed algorithm achieves a much better EE than the benchmark algorithms.
License type:
Publisher Copyright
Funding Info:
This research is supported by core funding from: I2R
Grant Reference no. : NA
Description:
© 2022 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.
ISSN:
0018-9545
1939-9359
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