aalto1 untyped-item.component.html
MCU-Free Backscatter Communication with Light-Enabled Frequency Control for Ambient IoT
Loading...
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A4 Artikkeli konferenssijulkaisussa
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
Series
2025 4th International Conference on 6G Networking (6GNet), pp. 106-110
Abstract
Ambient Internet of Things (A-IoT) adopts energy-neutral devices to conduct communication and sensing tasks, leveraging energy harvesting (EH) from ambient energy resources, such as solar, radio frequency (RF) signals, and vibrations. Using ambient backscatter communication (AmBC), a backscatter device (BD) can modulate and reflect existing RF carrier waves to transmit its local sensing data obtained from the embedded sensors. In this paper, we propose a novel A-IoT scheme, where the BD uses modulated visible light as both energy source and communication frequency controller. Specifically, the alternating current (AC) component of photovoltaic-converted light controls the frequency of communication subcarriers, eliminating the use of a microcontroller unit (MCU) for such purpose. We model the link budget of the proposed system, including the optical link and RF backscatter link. To demonstrate the implementation feasibility of the proposed scheme, we present a proof-of-concept experimental setup using the commercial off-the-shelf (COTS) electronic components. The experimental results show that the intermediate or subcarrier frequency of the backscattered signal can be shifted up to 10 MHz from the carrier, by configuring the modulation frequency of the visible light. The investigation demonstrates the feasibility of using visible light to control the subcarrier frequency of AmBC without MCUs, thereby providing extra flexibility for spectral arrangement and reducing the device cost in A-IoT systems.
Description
EC/HE/10119211/EU//AMBIENT-6G
Other note
Citation
Xie, B, Lietzén, J, Koskinen, K, Mela, L, Ruttik, K & Jäntti, R 2025, MCU-Free Backscatter Communication with Light-Enabled Frequency Control for Ambient IoT. in 2025 4th International Conference on 6G Networking (6GNet)., 11314133, IEEE, pp. 106-110, International Conference on 6G Networking, Paris, France, 17/12/2025. https://doi.org/10.1109/6GNet68413.2025.11314133