Backscatter Communications

Torres, Ricardo; Correia, Ricardo; Carvalho, Nuno Borges; Daskalakis, Spyridon Nektarios; Goussetis, George; Ding, Yuan; Georgiadis, Apostolos; Eid, Aline; Hester, Jimmy; Tentzeris, Manos M.

doi:10.1109/jmw.2021.3110058

Cited by 19 publications

(12 citation statements)

References 63 publications

(60 reference statements)

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“…Convenient wireless powering techniques for directly powering systems or recharging batteries are highly desirable as are developments towards flexible and textile-based batteries that remove the reliance on conventional rigid batteries [7], [37], [38]. Longterm monitoring applications should also consider required data rates, the quantity of data and security requirements when wirelessly communicating [35], potentially enabling the use of passive communication [8].…”

Section: Table 1 Related Reviews and Their Main Focusmentioning

confidence: 99%

“…Passive communication using backscattering transponders has enabled a plethora of applications ranging from sensing [8], [10] to high data-rate communication [83]. The ultra-low power consumption of backscattering modulators, due to the lack of carrier generation or amplification leads to wide-scale adoption of backscattering in energy harvesting and energyconstrained systems [84].…”

Section: ) Low-power Communication Backscattering and Software-define...mentioning

confidence: 99%

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Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap

et al. 2023

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This paper presents a holistic and authoritative review of the role of microwave technologies in enabling a new generation of wearable devices. A human-centric Internet of Things (IoT) covering remote healthcare, distributed sensing, and consumer electronics, calls for high-performance wearable devices integrated into clothing, which require interdisciplinary research efforts to emerge. Microwaves, the "interconnect" of wireless networks, can enable, rather than solely connect, the next generation of autonomous, sustainable, and wearable-friendly electronics. First, enabling technologies including wireless power transmission and RF energy harvesting, backscattering and passive communication, RFID, and electromagnetic sensing are reviewed. We then discuss the key integration platforms, covering smart fabrics and electronic textiles, additive manufacturing, printed electronics, natively-flexible and organic RF semiconductors, and fully-integrated CMOS systems, where opportunities for hybrid integration are highlighted. The emerging This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination.

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Section: Table 1 Related Reviews and Their Main Focusmentioning

confidence: 99%

Section: ) Low-power Communication Backscattering and Software-define...mentioning

confidence: 99%

Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap

et al. 2023

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“…Besides the data aggregation, the convenient energy supply is another bottleneck for massive low-power IoT devices. Ambient backscatter communication is recognized as a candidate solution for realizing sustainable IoT networks [8]- [10]. On the one hand, backscatter devices can reduce their power consumption by modulating and reflecting wireless signals to carry their own information to intended receivers, instead of generating radio-frequency signals independently.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Reflecting Surface-Assisted Over-the-Air Computation for Backscatter Sensor Networks

Mao

Zhang

et al. 2023

IEEE Trans. Veh. Technol.

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For achieving efficient data aggregation and energy supply in internet of things, this paper investigates the optimal design for an intelligent reflecting surface (IRS)-aided backscatter sensor network with over-the-air computation (AirComp).To ensure the accuracy of data aggregation, this paper presents a mean-squared error (MSE) minimization problem via jointly optimizing the normalization factor, power splitting ratios of backscatter devices (BDs), and phase shifts of IRS. Inspired by the block coordinate descent technique, we propose an alternating optimization method to solve the formulated non-convex problem. Specifically, we derive the optimal normalization factor and power splitting ratios in closed-form expressions, and exploit the variable substitution technique and semi-definite relaxation method to address the phase shift optimization subproblem. Simulation results demonstrate the significant MSE reduction achieved by the proposed method, in comparison with other benchmark methods.

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“…This issue can be less severe when operation frequency is high, for example, millimetre wave backscatter communications studied in Refs. [20,21]. When operation frequency is low, this does limit its applications in some low-profile IoT sensors.…”

Section: Introductionmentioning

confidence: 99%

Synthesis‐free backscatter directional modulation communication using Van‐Atta arrays

Huang

Purushothama

Ding

et al. 2022

IET Microwaves Antenna & Prop

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Backscatter communication, an emerging ultra-low-power wireless communication paradigm, has been studied as a promising solution for wireless communications in some Internet-of-Things (IoT) applications. The required ubiquitous data transmission in the IoT world is demanding information security. Different from mathematical encryption at higher protocol layers, the directional modulation (DM) technology can provide physicallayer wireless security, which does not require digital and computation resources that are otherwise scarce in low-power IoT devices. In this paper, a synthesis-free Van-Atta backscatter array is constructed and studied. The authors show that a Van-Atta array can be made to project orthogonal interference upon the backscattered signals in the radio frequency domain. The design details of the Van-Atta DM array are elaborated, and its efficacy is validated via bit error rate simulations.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Backscatter Communications

Cited by 19 publications

References 63 publications

Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap

Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap

Intelligent Reflecting Surface-Assisted Over-the-Air Computation for Backscatter Sensor Networks

Synthesis‐free backscatter directional modulation communication using Van‐Atta arrays

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