Enabling Massive IoT in Ambient Backscatter Communication Systems

Timoudas, Thomas Ohlson; Du, Rong; Fischione, Carlo

doi:10.1109/icc40277.2020.9149022

Cited by 9 publications

(9 citation statements)

References 15 publications

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“…This power constraint was chosen only to serve this illustrative purpose, and the primary case of interest in the simulations is the multiple antenna case. For a more in-depth numerical study of the single antenna case using the power constraint P = 20 Watts, see [13].…”

Section: Numerical Study and Resultsmentioning

confidence: 99%

“…Since it is possible to obtain a simple closedform solution in this special case, it is of particular interest. The material in this subsection is an extension of our earlier conference paper [13], with the major addition that here we consider the case of multiple primary users.…”

Section: B Closed-form Solution In the Backscatter Communication Case With A Single-antenna Base Stationmentioning

confidence: 99%

“…The algorithm for obtaining the optimal solution for BC in the single-antenna case has appeared in our earlier conference paper [13], for the case of a single primary user. Here, we greatly extend the results in that paper to the cases of multiple primary users, and provide the full proof of these extended results in the Appendix.…”

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confidence: 99%

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Comparing Backscatter Communication and Energy Harvesting in Massive IoT Networks

Timoudas

Fischione

2022

IEEE Trans. Wireless Commun.

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Backscatter communication (BC) and radiofrequency energy harvesting (RF-EH) are two promising technologies for extending the battery lifetime of wireless devices. Although there have been some qualitative comparisons between these two technologies, quantitative comparisons are still lacking, especially for massive IoT networks. In this paper, we address this gap in the research literature, and perform a quantitative comparison between BC and RF-EH in massive IoT networks with multiple primary users and multiple low-power devices acting as secondary users. An essential feature of our model is that it includes the interferences caused by the secondary users to the primary users, and we show that these intereferences significantly impact the system performance of massive IoT networks. For the RF-EH model, the power requirements of digital-to-analog and signal amplification are taken into account. We pose and solve a power minimization problem for BC, and we show analytically when BC is better than RF-EH. The results of the numerical simulations illustrate the significant benefits of using BC in terms of saving power and supporting massive IoT, compared to using RF-EH. The results also show that the backscatter coefficients of the BC devices must be individually tunable, in order to guarantee good performance of BC.

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Section: Numerical Study and Resultsmentioning

confidence: 99%

Section: B Closed-form Solution In the Backscatter Communication Case With A Single-antenna Base Stationmentioning

confidence: 99%

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Comparing Backscatter Communication and Energy Harvesting in Massive IoT Networks

Timoudas

Fischione

2022

IEEE Trans. Wireless Commun.

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“…Discussions on potential of Back-Com in MTC for current and future generations of wireless networks are presented by authors in [154] [155]. Further, the first theoretical model and a feasibility study of deploying large scale BackCom tags for massive IoT operation in an urban area are presented by authors in [156].…”

Section: B Transportationmentioning

confidence: 99%

Backscatter Wireless Communications and Sensing in Green Internet of Things

Toro

Leung

2022

IEEE Trans. on Green Commun. Netw.

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Internet of Things (IoT) is a key technology for enabling ubiquitous applications that interconnect with cyberphysical systems in various environments. However, its large scale adoption is strongly impeded by the limited energy available for most IoT devices that are battery-powered, and further challenged by the growing demands to pack increasing functionalities into IoT devices while shrinking their sizes. To address these problems, researchers have developed techniques for energy harvesting, wireless power transfer, and minimizing power consumption in the sensing, communication and computation components of IoT nodes, as found in many surveys. In contrast, this paper surveys Backscatter Communication (BackCom), a recently emerged technique that enables green IoT through joint wireless communication and sensing and potentially allows IoT devices to operate without batteries. The operating principle of BackCom-based green IoT, its architecture and evolution are presented. Also state-of-the-art applications such as healthcare, agriculture, human activity recognition, transportation and mobile IoT are reviewed together with the operational and security challenges faced by these applications and potential solution techniques to address these challenges while ensuring a high energy efficiency. Lastly, some future applications of BackCombased green IoT are discussed.

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Section: B Transportationmentioning

confidence: 99%