Prof. Dr. Ambuj Varshney

Beyond Radio Frequency for Internet of Things

Project PI: Prof. Dr. Ambuj Varshney

Visible Light Communication (LiFi)

  1. modBulb: A Modular Light Bulb for Visible Light Communication
    Authors: Kasun Hewage, Ambuj Varshney, Abdalah Hilamia, Thiemo Voigt
    ACM VLCS (Co-located with ACM MobiCom) 2016

  2. Battery-free Visible Light Sensing
    Authors: Ambuj Varshney, Andreas Soleiman, Luca Mottola, Thiemo Voigt
    ACM VLCS (Co-located with ACM MobiCom) 2017

  3. Connecting Battery-free IoT Tags Using LED Bulbs
    Authors: Domenico Giustiniano ,Ambuj Varshney, Thiemo Voigt
    The Eighteenth ACM Workshop on Hot Topics in Networks (ACM HotNets 2019)

  4. Two to Tango: Hybrid Light and Backscatter Networks for Next Billion Devices
    Authors: Ambuj Varshney, Ander Galiesto, Domenico Giustiniano
    Co-primary author that contributed equally to the work
    The Eighteenth ACM International Conference on Mobile Systems, Applications, and Services (ACM MobiSys 2020)

  5. PassiveLiFi: Rethinking LiFi for Low-Power and Long Range RF Backscatter
    Authors: Muhammad Sarmad, Borja Genoves, Ambuj Varshney, Domenico Giustiniano
    The Twenty Seventh Annual International Conference On Mobile Computing And Networking (ACM MobiCom 2021/2022)
    (Due to the pandemic, conference was held in 2022)

Tunnel Diodes for Low-Power Communication

  1. Judo: Addressing the Energy Asymmetry of Wireless Embedded Systems through Tunnel Diode based Wireless Transmitters
    Authors: Ambuj Varshney , Wenqing Yan, Prabal Dutta
    The Twentieth ACM International Conference on Mobile Systems, Applications, and Services (ACM MobiSys 2022)

  2. TunnelEmitter:Tunnel Diode based Low-Power Carrier Emitters for Backscatter Tags
    Authors: Ambuj Varshney, Lorenzo Corneo
    The Twenty Sixth Annual International Conference On Mobile Computing And Networking (ACM MobiCom 2020)

  3. TunnelScatter: Low Power Communication for Sensor Tags using Tunnel Diodes
    Authors: Ambuj Varshney, Andreas Soleiman, Thiemo Voigt
    The Twenty Fifth Annual International Conference On Mobile Computing And Networking (ACM MobiCom 2019)

Electronically Steerable Directional Antennas

  1. Directional Transmissions and Receptions for High-throughput Bulk Forwarding in Wireless Sensor Networks
    Authors: Ambuj Varshney, Luca Mottola, Mats Carlsson , Thiemo Voigt
    Thirteenth ACM Conference on Embedded Networked Sensor Systems (ACM SENSYS 2015)

  2. dRTI: Directional Radio Tomographic Imaging
    Authors: Bo Wei , Ambuj Varshney, Wen Hu, Neal Patwari, Thiemo Voigt , Chun Tung Chou
    The Fourteenth ACM/IEEE Conference on Information Processing in Sensor Networks(ACM/IEEE IPSN 2015)