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- W3010244985 abstract "RF Energy harvesting technology has been proved one of the effective approaches for powering battery-free wearable devices in wireless body area networks. However, excessive electromagnetic radiation is harmful to human body. In this paper, we consider real-time healthcare scenario where wearable devices worn by mobile users collect their physiological data in real time and multiple wireless chargers are deployed for energy provision. Our goal is to minimize the maximal radiation degree among mobile users while maintaining normal work of wearable devices via adaptive power control of wireless chargers. We first discrete the users' moving trajectories and transform the stubborn problem into a docile one. Then we propose a distributed algorithm with interaction of wireless chargers, wearable devices and base station to solve it. Our proposed real-time power control scheme achieves an approximation ratio of (1+e) in general case. Furthermore, one special case is discussed. Simulation results reveal that our scheme is efficient and the maximal radiation degree among users can be reduced by almost 20% as compared to the baseline scheme." @default.
- W3010244985 created "2020-03-13" @default.
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- W3010244985 date "2019-12-01" @default.
- W3010244985 modified "2023-09-24" @default.
- W3010244985 title "Real-Time Power Control of Wireless Chargers in Battery-Free Body Area Networks" @default.
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- W3010244985 doi "https://doi.org/10.1109/globecom38437.2019.9013993" @default.
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