Wireless Information Transfer with Opportunistic Energy Harvesting
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In this paper, the authors considered a point-to-point wireless link over the narrowband flat-fading channel subject to time-varying co-channel interference and derived the optimal mode switching rule at the receiver to achieve various trade-offs between wireless information transfer and energy harvesting.Abstract:
Energy harvesting is a promising solution to prolong the operation of energy-constrained wireless networks. In particular, scavenging energy from ambient radio signals, namely wireless energy harvesting (WEH), has recently drawn significant attention. In this paper, we consider a point-to-point wireless link over the narrowband flat-fading channel subject to time-varying co-channel interference. It is assumed that the receiver has no fixed power supplies and thus needs to replenish energy opportunistically via WEH from the unintended interference and/or the intended signal sent by the transmitter. We further assume a single-antenna receiver that can only decode information or harvest energy at any time due to the practical circuit limitation. Therefore, it is important to investigate when the receiver should switch between the two modes of information decoding (ID) and energy harvesting (EH), based on the instantaneous channel and interference condition. In this paper, we derive the optimal mode switching rule at the receiver to achieve various trade-offs between wireless information transfer and energy harvesting. Specifically, we determine the minimum transmission outage probability for delay-limited information transfer and the maximum ergodic capacity for no-delay-limited information transfer versus the maximum average energy harvested at the receiver, which are characterized by the boundary of so-called "outage-energy" region and "rate-energy" region, respectively. Moreover, for the case when the channel state information (CSI) is known at the transmitter, we investigate the joint optimization of transmit power control, information and energy transfer scheduling, and the receiver's mode switching. The effects of circuit energy consumption at the receiver on the achievable rate-energy trade-offs are also characterized. Our results provide useful guidelines for the efficient design of emerging wireless communication systems powered by opportunistic WEH.read more
Citations
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Book ChapterDOI
Research on Interference Energy Harvesting Based on SWIPT Relay System
TL;DR: In this paper, the authors proposed interference energy harvesting (IEH) which can compensate for the loss of the SWIPT relay system rate caused by the interference, where the interference energy is divided among subsequent transmission blocks, which can reduce the duration of EH slots.
Journal ArticleDOI
Secure Analog Network Coding With Wireless Energy Harvesting Under Multiple Eavesdroppers
Kisong Lee,Hyun-Ho Choi +1 more
TL;DR: The comparison of these two protocols in various network environments exhibits that PS-ANC has a better performance than TS-ANC when the network conditions are unfavorable for wiretapping by the eavesdroppers.
Proceedings ArticleDOI
Role Selection for Energy Harvesting Cooperative Systems
TL;DR: In the high SNR regime, in the conventional EH relay system with fixed role configuration, the results show that the energy conversion efficiency and the power-splitting factor at the relay have negligible effect on the outage behavior of ROSE cooperation.
Journal ArticleDOI
Optimal Probabilistic Robust Beamforming for MISO SWIPT Systems with Gaussian Channel Uncertainties
Quanzhong Li,Qi Zhang,Jiayin Qin +2 more
TL;DR: For simultaneous wireless information and power transfer in the multi-input single-output broadcast channel, a probabilistic robust beamforming scheme which minimizes the outage probability of the information receiver subject to the probabilistically energy harvesting constraint is proposed.
Journal ArticleDOI
Design of an Intrinsically Safe Series-Series Compensation WPT System for Automotive LiDAR
Luiz Alberto Lisboa Silva Cardoso,Vitor Monteiro,J. G. Pinto,Miguel Nogueira,Aderito Abreu,José A. Afonso,João L. Afonso +6 more
TL;DR: A simple design procedure for a series-series compensation circuit, which uses capacitors in series with both primary and secondary coils of an air-gapped transformer, is consolidated, exemplifying its use in the prototype of a WPT system for automotive light detection and ranging (LiDAR) equipment.
References
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