Ambuj VARSHNEY
Assistant Professor- Uppsala University, Sweden (PhD, and Postdoctoral Studies) (2012 - 2020)
- University of California, Berkeley, USA (Postdoctoral Scholar) (2020 - 2022)
Ambuj Varshney is a faculty member at the National University of Singapore, with a focus on embedded systems, wireless, and mobile computing. Previously, he was in the University of California, Berkeley's Department of Electrical Engineering and Computer Sciences. His academic journey led him to earn a PhD from Uppsala University, Sweden. Focusing on the challenges within embedded systems, especially the energy asymmetry problem that hinders the growth of the Internet of Things, Varshney has developed low-power wireless transmitters that are long-range and highly efficient. His work has received numerous recognitions, including the 2019 ABB Research Award. His research has been widely appreciated. Under his guidance, students have achieved several awards. Beyond his research, Varshney participates in various scientific events and committees.
RESEARCH AREAS
RESEARCH INTERESTS
Wireless Communication
Internet of Things
Embedded Systems
Mobile Computing
RESEARCH PROJECTS
Tackling Energy-Efficient Reception Challenge for Next Billion IoT Devices
The proposal addresses the energy challenge in IoT by designing energy-efficient receivers with tunnel diodes and LiFi or visible light communication, to enable sustainable, battery-free IoT devices.
RESEARCH GROUPS
TEACHING INNOVATIONS
SELECTED PUBLICATIONS
- Securing Battery-free Backscatter Tags through Fingerprinting. In ACM HOTNETS 2021
- PassiveLiFi: Rethinking LiFi for Low-Power and Long Range RF Backscatter. In ACM MOBICOM 2021
- Tunnel emitter: tunnel diode based low-power carrier emitters for backscatter tags. In ACM MOBICOM 2020
- Two to Tango: Hybrid Light and Backscatter Networks for Next Billion Devices. In ACM MOBISYS 2020
- TunnelScatter: Low Power Communication for Sensor Tags using Tunnel Diodes. In ACM MOBICOM 2019
- Connecting Battery-free IoT Tags Using LED Bulbs. In ACM HOTNETS 2018
- LoRea: A Backscatter Architecture that Achieves a Long Communication Range. In ACM SENSYS 2017
- Judo: addressing the energy asymmetry of wireless embedded systems through tunnel diode based wireless transmitters, ACM MOBISYS 2022
AWARDS & HONOURS
ACM WiSec Best Demonstration Award 2018
Best Paper Award ACM VLCS (co-located with Mobicom) 2017
Part of Jury of ABB Research Award in Honour of Hubertus von Grünberg 2022
Winner ACM Student Research Competition at MOBICOM (Graduate) (Mentor) 2017
Among Top 15 innovative projects of Uppsala University 2019
University of California, Berkeley FORM+FUND Fellow 2021
VINNOVA (Swedish Innovation Agency) Breakthrough Ideas 2019 (with grant of 50k USD)
ABB Research Award in Honour of Honor of Hubertus von Grünberg (For doctoral dissertation) (Included endowment of 300,000 USD) 2019
Best Demonstration Award at ACM MOBISYS 2023
Mentor to Winning Team of Student Research Competition at MobiCom 2023 (Undergraduate)
Mentor to Third Place Winner in the Student Research Competition at MobiCom 2023 (Undergraduate)
MODULES TAUGHT
CS4222
Wireless Networking
CS5272
Embedded Software Design
CS5422
Wireless Networking