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- name: "About" | ||
link: "index" | ||
- name: "Background" | ||
link: "index" | ||
- name: "Teaching" | ||
link: "cs6204" |
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layout: default | ||
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## About Me | ||
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<img class="profile-picture" src="http://ambuj.se/ambuj_files/photo3.jpg"> | ||
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I am an Assistant Professor at the School of Computing of the [National University of Singapore](http://nus.edu.sg). I am bootstrapping WEISER group. | ||
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WEISER group consists of a curiosity driven group of students, engineers and researchers interested in **W**ireless, **E**mbedded systems and **I**ntelligence, **S**ensing and **E**me**r**ging Technologies (WEISER). We build real systems. We commonly work at the intersection of the area of electronics, communication and computer science. | ||
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### Contact details | ||
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I am located at the new [computer science building Computing 3(COM3)](https://com3.comp.nus.edu.sg/). My office address is: #02-25, Computing 3, School of Computing, 11 Research Link, Singapore 119391. For scheduling and other general queries, you may email my personal assistant: [Joy](mailto:[email protected]) | ||
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Contact details: [[email protected]](mailto:[email protected]), Phone: +65 - 86706948 | ||
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## Research Interest | ||
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Over the past decade, My research interests have centered around **wireless**, **networking**, and **embedded systems**, and the intersection of these areas with other domains. Often my research efforts involves combining elements from electronics, communications and computer science. My research effort also often involves working with domain expterts and researchers from Industry. | ||
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## Recent News | ||
* [Q2 2022] Organisational role and committee member for various scientific events: Jury member 2022 ABB Research Award, ACM MobiCom 2023 (Web chair), IEEE Infocom 2023 (TPC member), IEEE Infocom 2022 (Session chair), CPS-IoTBench 2022 (Session chair), ACM LP-IoT 2022 (with Mobicom)(TPC Member), [Perfail 2023 (TPC Member)](https://perfail-workshop.github.io/2023/) | ||
* [Q1 2022] Joint work with Wenqing Yan (Uppsala University) and Prof. Prabal Dutta (University of California, Berkeley) was accepted/presented at ACM MobiSys 2022. | ||
* [Q1 2022] Served on the jury of the [ABB Research Award in Honor of Hubertus von Grünberg](https://global.abb/group/en/technology/hvg-award) in 2022. This awards research endowment (approximately 300k USD) is the highest offered by any commercial organization to support academic research. | ||
* [Q1 2022] Invited talk at [ACM LP-IoT Workshop (co-located with MobiCom)](https://www.witechlab.com/lpiot2021/#) | ||
* [Q1 2022] Started as an Assistant Professor at School of Computing of the National University of Singapore. Bootstrapping the WEISER research group. | ||
* [Q4 2021] Presented joint work with IMDEA Networks, Spain at ACM MobiCom 2021. This research work was also covered in popular media. | ||
* [Q3 2021] Became a UC Berkeley [Form+Fund Fellow (Spring 2021 cohort)](https://www.law.berkeley.edu/experiential/startupberkeleylaw/entrepreneurs/form-fund/) | ||
* [Q4 2019] Uppsala University Innovation appreciated our battery-free sensing work with Attractive Innovation Award and selected it among Top 15 projects from the University! Find the [press release here](https://www.uuinnovation.uu.se/about/attractive-innovation-project-awards-2019/) | ||
* [Q4 2019] For my doctoral dissertation work, I received the prestigious ABB Research Award 2019. The award includes endowment valued at 300,000 USD. I received this award from CEO of ABB - Peter Voser, and CTO of ABB Bazmi Husain, and the former chair of board of directors of ABB - Hubertus von Grünberg. | ||
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### Get to know about some of my research (2019 ABB Research Award Video): | ||
<div class="analytis"> | ||
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-83574323-1"></script> | ||
<script> | ||
window.dataLayer = window.dataLayer || []; | ||
function gtag(){dataLayer.push(arguments);} | ||
gtag('js', new Date()); | ||
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gtag('config', 'UA-83574323-1'); | ||
</script> | ||
</div> | ||
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<div class="video-container"> | ||
<iframe width="560" height="315" src="https://www.youtube.com/embed/hRp3xAtnIuU" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> | ||
</div> | ||
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## Research Themes | ||
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> “Applications are of course the whole point of ubiquitous computing” - Mark Weiser | ||
I am an engineer and an experimental computer scientist. Most of my research projects are application driven. They can be broadly classfied under one of the following research themes. | ||
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* **Bridging digital world with physical world:** | ||
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* **Factories of the future:** | ||
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## Individual Projects | ||
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* **Wireless Transmitters:** | ||
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* **Low-power Sensing:** | ||
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* **Visible Light Communication (LiFI):** | ||
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## Teaching and Mentorship | ||
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Mentored the following students (formally): | ||
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* [Qiao Yukai (2022 -)]() **(Ongoing)** [MComp student/Masters thesis, National University of Singapore] | ||
* [Andreas Soleiman (2016-2019)](http://ansol.se/academic) [RA, Master thesis] → MIT EECS PhD (withdrew to stay in industry) → Senior Data Scientist, H&M Group, Stockholm | ||
* [Elena di Lascio (2015-2016)](https://www.inf.usi.ch/phd/dilascio/) [Master thesis] → USI PhD (completed) → Novartis Institutes for BioMedical Research (NIBR) | ||
* [Oliver Harms (2016-2017)](https://www.chalmers.se/en/staff/Pages/harms.aspx)[Master thesis] → Chalmers PhD | ||
* Gustav Eriksson (2018)[Masters Thesis] → Project Engineer | ||
* [Sam Hylamia (2017-2018)](https://katalog.uu.se/profile/?id=N15-1362)[Masters Thesis and Research Assistant] → Uppsala University PhD | ||
* [Simon Olofsson (2015)](https://www.doc.ic.ac.uk/~so2015/)[Project assistant] → Imperial College London PhD → Facebook/Meta | ||
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Collaborated with the following students: | ||
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* [Lorenzo Corneo (Uppsala University)](https://lorenzocorneo.github.io/) → Aalto University → Ericsson Research | ||
* [Wenqing Yan (Uppsala University)](https://wenqingyan.github.io/)**(Ongoing)** | ||
* [Ander Galisteo (UC3M/IMDEA Networks)](https://andergalisteo.com/) → DoJo Five | ||
* Bo Wei (Unniversity of New South Wales) → Lancaster University (Lecturer) | ||
* [Muhammad Sarmad (IMDEA Networks)](https://networks.imdea.org/team/imdea-networks-team/people/muhammad-sarmad-shahab-mir/)**(Ongoing)** | ||
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## Academic Service | ||
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Served as a member of jury or other significant roles in the following events: | ||
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Part of jury for 2022 ABB Research Award in Honour of HvG. Other members were: | ||
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* Prof. Ambuj Varshney (National University of Singapore) | ||
* [Prof. Roland Siegwart (ETH Zurich)](https://en.wikipedia.org/wiki/Roland_Siegwart) | ||
* [Dr. Bernhard Eschermann (CTO, Process Automation, ABB)](https://opcfoundation.org/about/opc-foundation/organization/bernhard-eschermann/) | ||
* [Prof. Nina Thornhill (Imperial College London)](https://en.wikipedia.org/wiki/Nina_Thornhill) | ||
* [Prof. Manfred Morari (University of Pennsylvania)](https://en.wikipedia.org/wiki/Manfred_Morari) | ||
* [Dr. Hubertus von Gruenberg (chair of the ABB Board of Directors from 2007 to 2015)](https://resources.news.e.abb.com/attachments/published/13235/en-US/BFFBBA58C8EF/CV-ABB-HvG.pdf) | ||
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Involved in the organizational role of the following events: | ||
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* CPS-IoTBench 2022 (Part of 2022 CPS-IoT Week) (Organizing Committee and Session chair) | ||
* ACM/IEEE IPSN 2019 (Posters, co-chair with Prof. Nirupama Bulusu (Portaland State University)) | ||
* ACM/IEEE IPSN 2019 (PhD forum panelist with Prof. Anthony Rowe (Carnegie Mellon University) and Prof. Olga Saukh (TU Graz)) | ||
* IEEE SECON 2020 (Publicity chair) | ||
* IEEE INFOCOM 2022: Session chair | ||
* ACM MOBICOM 2023: Web Chair | ||
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Part of the technical program committee (TPC) of the following scientific conferences: | ||
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* IEEE INFOCOM: 2020 (e), 2021, 2022, 2023 | ||
* IEEE DCOSS: 2021, 2022 (Main conference), 2022 (Posters and Demonstrations) | ||
* IEEE ICDCS: 2019, 2021 | ||
* ACM/IEEE IoTDI: 2019, 2021 (Posters and demonstration) | ||
* ACM LP-IoT (MobiCom workshop): 2021, 2022 | ||
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Involved in reviewing of articles for the following journals: | ||
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* IEEE Wireless Communication Letters: 2019 | ||
* IEEE Transactions on Vehicular Networking: 2018, 2019, 2020 | ||
* IEEE Transactions of Mobile computing: 2014, 2015, 2018 , 2019 | ||
* IEEE Communication Magazine: 2015, 2017, 2019, 2020, 2021 | ||
* IEEE Sensors Letters: 2020 | ||
* ACM Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT): 2019, 2020 | ||
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## Publications | ||
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> Publication numbers are for reference only and not for the purpose of bean counting. | ||
### Year 2022 | ||
1. [POSTER: Enabling L3: Low Cost, Low Complexity and Low Power Radio Frequency Sensing using Tunnel Diodes]() | ||
Authors: Wenqing Yan, *Ambuj Varshney* | ||
The Twenty Eight Annual International Conference On Mobile Computing And Networking (ACM MobiCom 2022) | ||
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1. [Making Low-power and Long-range Wireless Backscatter Transmitters](https://dl.acm.org/doi/abs/10.1145/3551670.3551672) | ||
Author: *Ambuj Varshney* | ||
ACM GetMobile: Mobile Computing and Communications (Maker Edition) 2022 | ||
(This article was featured in the editoral by [Landon Cox (Microsoft Research)](microsoft.com/en-us/research/people/lacox/)) [Read the editorial here](https://dl.acm.org/action/showFmPdf?doi=10.1145%2F3551670) | ||
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2. [Judo: Addressing the Energy Asymmetry of Wireless Embedded Systems through Tunnel Diode based Wireless Transmitters](https://dl.acm.org/doi/abs/10.1145/3498361.3538923) | ||
Authors: *Ambuj Varshney* , [Wenqing Yan](https://wenqingyan.github.io/), [Prabal Dutta](https://web.eecs.umich.edu/~prabal/) | ||
The Twentieth ACM International Conference on Mobile Systems, Applications, and Services (ACM MobiSys 2022) | ||
* <span style="color:blue"> Teaser video: [Youtube](https://www.youtube.com/watch?v=X1H6UIdfKWQ)</span> | ||
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3. [PassiveLiFi: Rethinking LiFi for Low-Power and Long Range RF Backscatter](https://dl.acm.org/doi/10.1145/3447993.3483262) | ||
Authors: Muhammad Sarmad, Borja Genoves, *Ambuj Varshney*, [Domenico Giustiniano](https://networks.imdea.org/team/imdea-networks-team/people/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) | ||
* Research was covered by popular media: Hackster, El Mundo (Largest newspaper in Spain), Stacey on IoT, TechXplore, AzoSensors, ElectronicsForu | ||
* <span style="color:blue"> Teaser video: [Youtube](https://www.youtube.com/watch?v=rraZKUzcOMU) </span> | ||
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### Year 2021 | ||
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1. [Securing Battery-free Backscatter Tags through Fingerprinting](https://dl.acm.org/doi/10.1145/3484266.3487388) | ||
Authors: [Revathy Narayanan](https://sites.google.com/view/revathy-narayanan/home), *Ambuj Varshney*, Panos Papadimitratos | ||
The Twentieth ACM Workshop on Hot Topics in Networks (ACM HotNets 2021) | ||
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2. [Radio frequency communication device for low power communication](https://patents.google.com/patent/WO2021040594A1/en?inventor=Ambuj+Varshney&oq=Ambuj+Varshney) | ||
Ambuj Varshney (Only inventor) | ||
[PCT/Patent Application] [WO2021040594A1] | ||
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### Year 2020 | ||
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1. [TunnelEmitter:Tunnel Diode based Low-Power Carrier Emitters for Backscatter Tags](https://dl.acm.org/doi/10.1145/3372224.3419199) | ||
Authors: *Ambuj Varshney*, Lorenzo Corneo | ||
The Twenty Sixth Annual International Conference On Mobile Computing And Networking (ACM MobiCom 2020) | ||
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2. [Two to Tango: Hybrid Light and Backscatter Networks for Next Billion Devices](https://dl.acm.org/doi/10.1145/3386901.3388918) | ||
Authors: Ambuj Varshney, [Ander Galiesto](https://andergalisteo.com/), 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) | ||
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### Year 2019 | ||
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1. [TunnelScatter: Low Power Communication for Sensor Tags using Tunnel Diodes](https://dl.acm.org/doi/10.1145/3300061.3345451) | ||
Authors: *Ambuj Varshney*, [Andreas Soleiman](http://ansol.se/academic), Thiemo Voigt | ||
The Twenty Fifth Annual International Conference On Mobile Computing And Networking (ACM MobiCom 2019) | ||
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### Year 2018 | ||
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1. [Connecting Battery-free IoT Tags Using LED Bulbs](https://dl.acm.org/doi/10.1145/3286062.3286077) | ||
Authors: Domenico Giustiniano ,*Ambuj Varshney*, Thiemo Voigt | ||
The Eighteenth ACM Workshop on Hot Topics in Networks (ACM HotNets 2019) | ||
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2. [Demonstration: Towards Battery-free Radio Tomographic Imaging](https://dl.acm.org/doi/10.1145/3212480.3226107) | ||
Authors: Abdullah Hylamia,*Ambuj Varshney*, Andreas Soleiman, Panos Papadimitratos, Christian Rohner, Thiemo Voigt | ||
The Eleventh ACM Conference on Security and Privacy in Wireless and Mobile Networks (ACM WiSec-2018) | ||
**Best demonstration award** | ||
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3. [Battery-free 802.15.4 Receiver](https://dl.acm.org/doi/10.1109/IPSN.2018.00045) | ||
Authors: Carlos Perez Penichet, Claro Noda,*Ambuj Varshney*, Thiemo Voigt | ||
The Seventeenth ACM/IEEE Conference on Information Processing in Sensor Networks.(ACM/IEEE IPSN 2018) | ||
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4. [Enabling Sustainable Networked Embedded Systems](http://uu.diva-portal.org/smash/record.jsf?pid=diva2%3A1190906&dswid=5386) | ||
*Ambuj Varshney*, Doctoral dissertation | ||
**Awarded the 2019 ABB Research Award in Honour of HvG (with grant of 300k USD)** | ||
[Press release from Uppsala University](https://uu.se/en/news/article/?id=13666&typ=artikel) | ||
[Press release from ABB](https://new.abb.com/news/detail/46277/abb-research-award-2019-goes-to-battery-free-sensor-project) | ||
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### Year 2017 | ||
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1. [LoRea: A Backscatter Architecture that Achieves a Long Communication Range](https://dl.acm.org/doi/10.1145/3131672.3131691) | ||
Authors: *Ambuj Varshney*, Oliver Harms, Carlos Penichet, Christian Rohner , Frederik Hermans, Thiemo Voigt | ||
Fifteenth ACM Conference on Embedded Networked Sensor Systems (ACM SENSYS 2017) | ||
**2019 ABB Research Award Winner** | ||
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2. [Battery-free Visible Light Sensing](https://dl.acm.org/doi/abs/10.1145/3129881.3129890) | ||
Authors: *Ambuj Varshney*, Andreas Soleiman, Luca Mottola, Thiemo Voigt | ||
ACM VLCS (Co-located with ACM MobiCom) 2017 | ||
**Best Paper Award** | ||
**ACM Student Research Competition Winner (Graduate, MobiCom) (Mentored student)** | ||
**Google Faculty Research Award 2018 (PhD advisor)** | ||
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3. [Towards wide-area backscatter networks](https://dl.acm.org/doi/10.1145/3127882.3127888) | ||
Authors: *Ambuj Varshney*, Carlos Perez Penichet, Christian Rohner, Thiemo Voigt | ||
ACM HotWireless (Co-located with ACM MobiCom) 2017 | ||
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### Year 2016 | ||
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1. [modBulb: A Modular Light Bulb for Visible Light Communication](https://dl.acm.org/doi/10.1145/2981548.2981559) | ||
Authors: Kasun Hewage, *Ambuj Varshney*, Abdalah Hilamia, Thiemo Voigt | ||
ACM VLCS (Co-located with ACM MobiCom) 2016 | ||
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2. [Augmenting IoT Networks with Backscatter-Enabled Passive Sensor Tags](https://dl.acm.org/doi/10.1145/2980115.2980132) | ||
Authors: Carlos Perez Penichet, Frederik Hermans, *Ambuj Varshney*, Thiemo Voigt | ||
ACM HotWireless (Co-located with ACM MobiCom) 2016 | ||
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### Year 2015 | ||
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1. [Directional Transmissions and Receptions for High-throughput Bulk Forwarding in Wireless Sensor Networks](https://dl.acm.org/doi/10.1145/2809695.2809720) | ||
Authors: *Ambuj Varshney*, Luca Mottola, Mats Carlsson , Thiemo Voigt | ||
Thirteenth ACM Conference on Embedded Networked Sensor Systems (ACM SENSYS 2015) | ||
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2. [dRTI: Directional Radio Tomographic Imaging](https://dl.acm.org/doi/10.1145/2737095.2737118) | ||
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) | ||
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