Search Results - "Varshney, Ambuj"
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1
LiFi for Low-Power and Long-Range RF Backscatter
Published in IEEE/ACM transactions on networking (01-06-2024)“…Light bulbs have been recently explored to design Light Fidelity (LiFi) communication to battery-free tags, thus complementing Radiofrequency (RF) backscatter…”
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Journal Article -
2
VoCopilot: Voice-Activated Tracking of Everyday Interactions
Published 15-12-2023“…Voice plays an important role in our lives by facilitating communication, conveying emotions, and indicating health. Therefore, tracking vocal interactions can…”
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3
TunnelSense: Low-Power, Non-Contact Sensing Using Tunnel Diodes
Published in 2024 IEEE International Conference on RFID (RFID) (04-06-2024)“…Sensing the motion of physical objects in an environment enables numerous applications, from tracking occupancy in buildings and monitoring vital signs to…”
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Conference Proceeding -
4
TunnelSense: Low-power, Non-Contact Sensing using Tunnel Diodes
Published 15-05-2024“…Sensing the motion of physical objects in an environment enables numerous applications, from tracking occupancy in buildings and monitoring vital signs to…”
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Demo Abstract: PixelGen: Rethinking Embedded Camera Systems for Mixed-Reality
Published in 2024 23rd ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) (13-05-2024)“…A confluence of advances in several fields has led to the emergence of mixed-reality headsets. They can enable us to interact with and visualize our…”
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Conference Proceeding -
6
PixelGen: Rethinking Embedded Camera Systems
Published 04-02-2024“…Embedded camera systems are ubiquitous, representing the most widely deployed example of a wireless embedded system. They capture a representation of the world…”
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7
TunnelScatter: Low Power Communication for Sensor Tags using Tunnel Diodes
Published 13-01-2020“…Due to extremely low power consumption, backscatter has become the transmission mechanism of choice for battery-free devices that operate on harvested energy…”
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Poster Abstract: Enabling Non-contact, Low-Power Sensing using Tunnel Diodes
Published in 2024 23rd ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) (13-05-2024)“…Tracking movements in the environment of macroscopic objects enables numerous applications, from monitoring vital signs through body movements to inferring…”
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Conference Proceeding -
9
Visible Light Communication for Wearable Computing
Published 22-03-2018“…Visible Light Communication (VLC) is emerging as a means to network computing devices that ameliorates many hurdles of radio-frequency (RF) communications, for…”
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Journal Article -
10
Battery-free 802.15.4 receiver
Published in 2018 17th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) (11-04-2018)“…We present the architecture of an 802.15.4 receiver that, for the first time, operates at a few hundred microwatts, enabling new battery-free applications. To…”
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Conference Proceeding -
11
Battery-free 802.15.4 receiver: demo abstract
Published in Proceedings of the 17th ACM/IEEE International Conference on Information Processing in Sensor Networks (11-04-2018)“…We present the architecture for an 802.15.4 receiver that enables battery-free operation. To reach micro-power consumption, the architecture diverges from that…”
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Conference Proceeding -
12
Poster Abstract: LocaLight - A Battery-Free Passive Localization System Using Visible Light
Published in 2016 15th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) (01-04-2016)“…Most existing indoor localization systems are battery-powered and use the changes in Radio Frequency (RF) signals to localize objects. In this paper, we…”
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Conference Proceeding -
13
Battery-free 802.15. 4 Receiver
Published in 17th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) (2018)“…We present the architecture of an 802.15.4 receiver that, for the first time, operates at a few hundred microwatts, enabling new battery-free applications. To…”
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Conference Proceeding -
14
Demo Abstract: Battery-Free 802.15.4 Receiver
Published in 17th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) (01-04-2018)“…We present the architecture for an 802.15.4 receiver that enables battery-free operation. To reach micro-power consumption, the architecture diverges from that…”
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Conference Proceeding -
15
Poster Abstract: BouKey: Location-Based Key Sharing Using Visible Light Communication
Published in 2016 15th ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) (01-04-2016)“…Visible Light Communication (VLC) is an emerging communication channel serving as a complement to traditional wireless communication. Visible light has many…”
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Conference Proceeding -
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Poster Abstract : Directional transmissions and receptions for burst forwarding using disjoint paths
Published in IPSN-14 Proceedings of the 13th International Symposium on Information Processing in Sensor Networks (01-04-2014)“…Bulk data transmission is an important traffic pattern of many sensor network applications. These applications deliver large amounts of sensed data to a sink…”
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Conference Proceeding -
17
Bounds on the Lifetime of WSNs
Published in 2013 IEEE International Conference on Distributed Computing in Sensor Systems (01-05-2013)“…Energy is one of the most important resources in wireless sensor networks (WSN). Energy directly translates to lifetime which is an important ingredient of…”
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Conference Proceeding -
18
LoRea: A Backscatter Architecture that Achieves a Long Communication Range
Published 31-10-2016“…There is the long-standing assumption that radio communication in the range of hundreds of meters needs to consume mWs of power at the transmitting device. In…”
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Journal Article -
19
dRTI: Directional Radio Tomographic Imaging
Published 12-02-2014“…Radio tomographic imaging (RTI) enables device free localisation of people and objects in many challenging environments and situations. Its basic principle is…”
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Journal Article