Safe and secure wireless power transfer networks: challenges and opportunities in RF-based systems

Liu, Qingzhi; Yıldırım, Kasım Sinan; Pawełczak, Przemysław; Warnier, Martijn

doi:10.1109/mcom.2016.7565191

Cited by 56 publications

(48 citation statements)

References 14 publications

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“…Security and safety concerns exist in WPT and their possible countermeasures, such as beamforming, jamming, monitoring, safety, charging, spoofing, and software [133]. In this subsection, the security and health issues are discussed.…”

Section: Health and Security Challenges For Wireless Power Transfermentioning

confidence: 99%

“…In this subsection, the security and health issues are discussed. Many solutions in terms of safety and security were presented by Liu et al [133]. WPT-based RF had already become a promising solution to power a wide range of low-power embedded devices wirelessly.…”

Section: Health and Security Challenges For Wireless Power Transfermentioning

confidence: 99%

“…The motivation to address the safety and security problems related to WPT emphasizes their importance in terms of efficient and dependable operation of RF-based WPT. Liu et al [133] provided an overview of new research opportunities in this emerging domain and shown that WPT is weak to attacks. Barman et al [14] explained the human exposure to electromagnetic fields following safety considerations.…”

Section: Health and Security Challenges For Wireless Power Transfermentioning

confidence: 99%

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Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

et al. 2017

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Abstract:Traditional power supply cords have become less important because they prevent large-scale utilization and mobility. In addition, the use of batteries as a substitute for power cords is not an optimal solution because batteries have a short lifetime, thereby increasing the cost, weight, and ecological footprint of the hardware implementation. Their recharging or replacement is impractical and incurs operational costs. Recent progress has allowed electromagnetic wave energy to be transferred from power sources (i.e., transmitters) to destinations (i.e., receivers) wirelessly, the so-called wireless power transfer (WPT) technique. New developments in WPT technique motivate new avenues of research in different applications. Recently, WPT has been used in mobile phones, electric vehicles, medical implants, wireless sensor network, unmanned aerial vehicles, and so on. This review highlights up-to-date studies that are specific to near-field WPT, which include the classification, comparison, and potential applications of these techniques in the real world. In addition, limitations and challenges of these techniques are highlighted at the end of the article.

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Section: Health and Security Challenges For Wireless Power Transfermentioning

confidence: 99%

Section: Health and Security Challenges For Wireless Power Transfermentioning

confidence: 99%

Section: Health and Security Challenges For Wireless Power Transfermentioning

confidence: 99%

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Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

et al. 2017

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“…Harvesting energy in secure wireless networks has also drawn the research community's attention recently [6]- [8]. Obviously, considering wireless security and energy-harvesting is generally more challenging than considering each problem separately [7], [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Security and Energy Harvesting for MIMO-OFDM Networks

Hoang

Shafie

Costa

et al. 2020

IEEE Trans. Commun.

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We consider a multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) network in which a source node, Alice, communicates with an energy-harvesting destination node, Bob, in the presence of a passive eavesdropper. To secure the wireless transmission, Alice generates a hybrid artificial noise (AN) in both frequency and time domains. Moreover, in order to collect more energy, Bob splits the received signal power of the cyclic prefix of each OFDM block. We then propose two non-convex optimization problems to balance both the need for security and the need for harvesting energy at Bob. While one considers maximizing the secrecy rate, the other approach aims at maximizing the harvested energy. Path-following algorithms of low computational complexity are developed and evaluated. Our numerical results show the gain of our proposed scheme and the effectiveness of our proposed algorithms.

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“…The works in [15] and [16] deal with the problem of maximizing the harvested energy and wireless charging tasks scheduling, respectively, when the transmitted signals guarantee a well-defined EMR constraint. The work [17] discusses the security issues in RF-based WPT systems and investigates techniques that ensure confidentiality, security and safety for different types of attacks. The second one is the specific absorption rate (SAR) that measures the absorbed power in a unit mass of human tissue by using units of Watt per kilogram [W/kg].…”

mentioning

confidence: 99%

Specific Absorption Rate-Aware Beamforming in MISO Downlink SWIPT Systems

Zhang

Zheng

Krikidis

et al. 2020

IEEE Trans. Commun.

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This paper investigates the optimal transmit beamforming design of simultaneous wireless information and power transfer (SWIPT) in the multiuser multiple-input-single-output (MISO) downlink with specific absorption rate (SAR) constraints. We consider the power splitting technique for SWIPT, where each receiver divides the received signal into two parts: one for information decoding and the other for energy harvesting with a practical non-linear rectification model. The problem of interest is to maximize as much as possible the received signalto-interference-plus-noise ratio (SINR) and the energy harvested for all receivers, while satisfying the transmit power and the SAR constraints by optimizing the transmit beamforming at the transmitter and the power splitting ratios at different receivers. The optimal beamforming and power splitting solutions are obtained with the aid of semidefinite programming and bisection search. Low-complexity fixed beamforming and hybrid beamforming techniques are also studied. Furthermore, we study the effect of imperfect channel information and radiation matrices, and design robust beamforming to guarantee the worst-case performance. Simulation results demonstrate that our proposed algorithms can effectively deal with the radio exposure constraints and significantly outperform the conventional transmission scheme with power backoff.Index Terms-Wireless power transfer, SWIPT, specific absorption rate, MU MISO, beamforming, optimization. I. INTRODUCTIONSimultaneous wireless information and power transfer (SWIPT) is a new technology where information and energy flows co-exist, co-engineered to simultaneously provide communication connectivity and energy sustainability [1], [2]. It has been considered as a new promising solution to transmit information and energy to low power devices and to extend the battery lifetime of wireless networks, especially in wireless sensor networks and Internet of Things (IoT) applications. Compared to the traditional energy harvesting (EH) and green communication techniques, which collect energy from natural and man-made sources such as solar, wind or mechanical vibration, SWIPT can be fully controlled and optimized by harvesting energy from the radio-frequency (RF) signals. From the seminal work of Varshney [36], who introduced the concept of SWIPT and the fundamental trade-off between information and energy transfer (i.e., information-energy capacity region), substantial works appear in the literature that study SWIPT from different perspectives.

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Safe and secure wireless power transfer networks: challenges and opportunities in RF-based systems

Cited by 56 publications

References 14 publications

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

Security and Energy Harvesting for MIMO-OFDM Networks

Specific Absorption Rate-Aware Beamforming in MISO Downlink SWIPT Systems

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