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Ritayan Biswas: Harnessing ambient signals for battery-free sensor operation makes maintenance of IoT easier

Tampereen yliopisto
SijaintiKorkeakoulunkatu 3, Tampere
Sähkötalon sali S2, Hervannan kampus
Ajankohta1.12.2023 10.00–14.00
PääsymaksuMaksuton tapahtuma
In his doctoral dissertation M.Sc. Ritayan Biswas explores Ambient Backscattering Communication (AmBC), a technology that could power Internet of Things (IoT) sensors using ambient RF signals. This could eliminate the need for batteries and make the maintenance of sensors and devices easier.

In an era where the Internet of Things (IoT) is transforming our world, a multitude of devices and sensors are becoming an integral part of our environment. These “things” are capable of measuring and monitoring a variety of parameters, such as temperature and humidity, to name a few. Often the sensors require external power sources, such as batteries and wires, which might make the regular maintenance of these devices cumbersome and extremely tedious, depending on their location.

Ambient Backscattering Communication (AmBC) is a wireless communication paradigm where sensors have the capability to utilize the energy from ambient RF signals. The ambient signals can originate from a variety of sources such as FM radio, TV broadcasts, WLAN or cellular network signals. The ability to utilize the energy from the ambient signals enables the wireless and battery free operation of the sensors utilized for IoT.

In his doctoral dissertation Ritayan Biswas evaluates the performance of Ambient Backscattering Communications utilizing ambient radio frequency (RF) signals, such as FM radio and cellular network signals, and examines its applicability in different outdoor environments. He summarizes the research carried out to evaluate the performance and applicability of Ambient Backscattering Communications in different outdoor environments such as dense urban, sub-urban and rural environments utilizing different ambient signals.

“The results of the study have shown that ambient signals can indeed be utilized to provide power for these sensors in certain situations”, says Ritayan Biswas. The findings have resulted in seven publications, one journal and six conferences.

Public defence on Friday 1 December

The doctoral dissertation of MSc. Ritayan Biswas in the field of electrical engineering titled Performance Evaluation of Ambient Backscatter Communications (AmBC) in Outdoor Environments will be publicly examined at the Faculty of Information Technology and Communication Sciences of Tampere University in room S2 in the Sähkötalo building (address: Korkeakoulunkatu 3, Tampere) at 12:00 on Friday, 1 December 2023.

The opponents will be Professor Ari Pouttu from the University of Oulu, Finland and Professor Michele Segata from the University of Trento, Italy. The Custos will be Professor Jukka Lempiäinen from Tampere University.

The doctoral dissertation is available online.

The public defence can be followed via remote connection.