Learning Optimal Kernels for Gaussian Process Regression
Pre-print, Feb 2024.
Sample-Constrained Black Box Optimization for Audio Personalization
AAAI, Feb 2024.
Audio Personalization through Human-in-the-loop Optimization
NeurIPS Workshop on ML for Audio, Dec 2023.
Self-Supervised Speech Denoising with Multi-Modal Data
NeurIPS Workshop on ML for Audio, Dec 2023.
Generating Indoor Maps with Guidance from Signal Propagation Models
Preprint, Oct 2023.
RoSS: Rotation-induced Aliasing for Audio Source Separation
demo
ICRA, Jan 2023.
Learning to Separate Voices by Spatial Regions
demo
ICML, Jul 2022.
PoseKernelLifter: Metric Lifting of 3D Human Pose Using Sound
IEEE/CVF CVPR, Jun 2022.
Enabling IoT Self-Localization Using Ambient 5G Signals
NSDI, Apr 2022.
Estimating Angle of Arrival (AoA) of multiple Echoes in a Steering Vector Space
arXiv, Sep 2021.
Inferring Facing Direction from Voice Signals
arXiv, Sep 2021.
Personalizing Head Related Transfer Functions for Earables
ACM SIGCOMM, Aug 2021.
Angle-of-arrival (AOA) Factorization in Multipath Channels
IEEE ICASSP, June 2021.
Practical Null Steering in Millimeter Wave Networks
NSDI, April 2021.
One Protocol to Rule Them All: Deep Reinforcement Learning Aided MAC for Wireless Network-on-Chips
NSDI, April 2021.
Efficient Wideband Spectrum Sensing Using MEMS Acoustic Resonators
NSDI, April 2021.
Earable Computing: A New Area to Think About
ACM HotMobile, Feb 2021.
3D Imaging Using Millimeter Wave 5G Signal Reflections
IEEE TMTT, Jun 2021.
Voice Localization Using Nearby Wall Reflections
ACM MobiCom, September 2020.
Ear-AR: Indoor Acoustic Augmented Reality on Earphones
ACM MobiCom, September 2020.
EarSense: Earphones as a Teeth Activity Sensor
ACM MobiCom, September 2020.
Understanding and Embracing the Complexities of the Molecular Communication Channel in Liquids
ACM MobiCom, September 2020.
Through Fog High Resolution Imaging Using Millimeter Wave Radar
IEEE/CVF CVPR, June 2020.
3D Imaging using mmWave 5G Signals
RFIC, June 2020.
Many-to-Many Beam Alignment in Millimeter Wave Networks
NSDI, February 2019.
TrackIO: Tracking First Responders Inside-Out
NSDI, February 2019.
Online Millimeter Wave Phased Array Calibration Based on Channel State Information
IEEE VLSI Testing Symposium, April 2019.
STEAR: Robust Step Counting from Earables
Earcomp (Workshop with Ubicomp), September 2019.
Wireless Sensing: Material Identification and Localization
Actively Exploiting Propagation Delay for Acoustic Systems
Ghostbuster: Detecting the Presence of Hidden Eavesdroppers
ACM MobiCom, October 2018.
Closing the Gaps in Inertial Motion Tracking
ACM MobiCom, October 2018.
MUTE: Bringing IoT to Noise Cancellation
ACM SIGCOMM, August 2018.
Fast Millimeter Wave Beam Alignment
ACM SIGCOMM, August 2018.
LiquID: A Wireless Liquid IDentifier
ACM MobiSys, June 2018.
Inaudible Voice Commands: The Long-Range Attack and Defense
NSDI, April 2018.
If WiFi APs Could Move: A Measurement Study
IEEE Transactions on Mobile Computing, 2018.
RF Filters with Periodic Passbands for Sparse Fourier Transform-Based Spectrum Sensing
Journal of Microelectromechanical Systems, 2018.
Technical perspective: Is your WiFi a sensor?
Communications of the ACM, 2018.
Enabling Dense Spatial Reuse in mmWave Networks
Poster, ACM SIGCOMM 2018
Winner of ACM SIGCOMM 2018 Student Research Competition (SRC)
Networked Acoustics Around Human Ears
Poster, ACM MobiCom 2018
P2PLoc: Peer-to-Peer Localization of Fast-Moving Entities
IEEE Computer, October 2018.
Inaudible Acoustics: Techniques and Applications
BackDoor: Making Microphones Hear Inaudible Sounds
ACM MobiSys, June 2017.
Best Paper Award
Bringing IoT to Sports Analytics
NSDI, March 2017.
Extending Cell Tower Coverage through Drones
ACM HotMobile, February 2017.
Riding the Non-linearities to Record Ultrasound with Smartphones
Demo, ACM MobiSys 2017
IoT Platform for Sports Analytics
ACM GetMobile, December 2017.
Motion Tracking Problems in
Internet of Things (IOT) and Wireless Networking
Millimeter Wave Communications: from Point-to-Point Links to Agile Network Connections
ACM HotNets, November 2016.
Tracking Drone Orientation with Multiple GPS Receivers
ACM MobiCom, October 2016.
I am a Smartwatch and I can Track my User’s Arm
ACM MobiSys, June 2016.
Listening through a Vibration Motor
ACM MobiSys, June 2016.
Ripple II: Faster Communications through Physical Vibrations
NSDI, March 2016.
Low Bandwidth Offload for Mobile AR
ACM CoNEXT, December 2016.
The Case for Robotic Wireless Networks
WWW, April 2016.
Compressing Backoff in CSMA Networks
IEEE ICNP, November 2016.
AutoLabel: Labeling Places from Pictures and Websites
ACM UbiComp, September 2016.
A Millimeter Wave Software Defined Radio Platform with Phased Arrays
Poster, ACM MobiCom 2016
Winner of ACM MobiCom 2016 Student Research Competition (SRC)
Cell Tower Extension through Drones
Poster, ACM MobiCom 2016
Runners Up at ACM MobiCom 2016 Student Research Competition (SRC)
Arm Posture Tracking Using a Smartwatch
Extended Abstract, ACM MobiSys 2016 PhD Forum
Applying Multimodal Sensing to Human Location Estimation
MoLe: Motion Leaks through Smartwatch Sensors
ACM MobiCom, September 2015.
Experiences with eNav: A Low-power Vehicular Navigation System
ACM UbiComp, September 2015.
Ripple: Communicating through Physical Vibrations
NSDI, May 2015.
Securing RFIDs by Randomizing the Modulation and Channel
NSDI, May 2015.
OverLay: Practical Mobile Augmented Reality
ACM MobiSys, May 2015.
Visually Fingerprinting Humans without Face Recognition
ACM MobiSys, May 2015.
Indoor Localization: Experiences and Lessons Learnt
ACM/IEEE IPSN, April 2015.
ActivPass: Your Daily Activity is Your Password
ACM CHI, April 2015.
Matching Physical Sites with Web Sites for Semantic Localization
Workshop on Physical Analytics, May 2015.
SemanticSLAM: Using Environment Landmarks for Unsupervised Indoor Localization
IEEE Transactions on Mobile Computing, 2015.
Fast Multi-dimensional NMR Acquisition and Processing Using the Sparse FFT
Journal of Biomolecular NMR, Springer, 2015.
User Location Fingerprinting at Scale
Poster, ACM MobiCom 2015
Runners Up at ACM MobiCom 2015 Student Research Competition (SRC)
OverLay: Practical Mobile Augmented Reality
Demo, ACM HotMobile 2015
Awarded Best Demo
Practical Architectures for Fused Visual and Inertial Mobile Sensing
Light Field Reconstruction Using Sparsity in the Continuous Fourier Domain
ACM SIGGRAPH, November 2014.
High-Throughput Implementation of a Million-Point Sparse Fourier Transform
IEEE FPL, September 2014.
Scalable Social Analytics for Live Viral Event Prediction
ICWSM, June 2014.
I am a Smartphone and I can Tell my User’s Walking Direction
ACM MobiSys, June 2014.
GHz-Wide Sensing and Decoding Using the Sparse Fourier Transform
IEEE Infocom, April 2014.
Correlation Chemical Shift Imaging with Sparse-FFT and Real-time Motion and Shim Correction
ENC, March 2014.
AccelPrint: Imperfections of Accelerometers Make Smartphones Trackable
NDSS, February 2014.
A 0.75 Million-Point Fourier Transform Chip for Frequency-Sparse Signals
ISSCC, February 2014.
I am a Smartphone and I Know My User is Driving
COMSNETS, January 2014. (Invited Paper)
Injecting Life into Toys
ACM HotMobile, February 2014.
Infrastructure Mobility: A What-if Analysis
ACM HotNets, October 2014.
Backing out of Linear Backoff in Wireless Networks
ACM HotWireless, September 2014.
D-BigBand: Sensing GHz-Wide Non-Sparse Spectrum on Commodity Radios
ACM S3 Workshop, September 2014.
Unsupervised Indoor Localization (UnLoc): Beyond the Prototype
Video, ACM MobiSys 2014
Real-time Object Tagging and Retrieval
Demo, ACM MobiSys 2014
I am a Smartphone and I can Tell my Users Walking Direction
Demo, ACM MobiSys 2014
Recognizing Humans without Face Recognition
Demo, ACM MobiSys 2014
FOCUS: Clustering Crowdsourced Videos by Line-of-Sight
ACM SenSys, November 2013.
Sample-Optimal Average-Case Sparse Fourier Transform in Two Dimensions
Allerton, October 2013.
If You See Something, Swipe towards It: Crowdsourced Event Localization
ACM UbiComp, September 2013.
Your Reactions Suggest You Like the Movie: Automatic Content Rating using Reaction Sensing
ACM UbiComp, September 2013.
Best Paper Honorable Mention
Cooperative Packet Recovery in Enterprise WLANs
IEEE Infocom, April 2013.
QuickSense: Fast and Energy Efficient Channel Sensing for Dynamic Spectrum Access
IEEE Infocom, April 2013.
Predicting Length of Stay at WiFi Hotspots
IEEE Infocom, April 2013.
DataSpotting: Exploiting Naturally Clustered Mobile Devices to Offload Cellular Traffic
IEEE Infocom, (Mini Conference), April 2013.
MRS Sparse-FFT: Reducing Acquisition Time and Artifacts for In Vivo 2D Correlation Spectroscopy
ISMRM, April 2013.
Shift Finding in Sublinear Time
SODA, January 2013.
The Case for Psychological Computing
ACM HotMobile, February 2013.
Recognizing Humans without Face Recognition
ACM HotMobile, February 2013.
TagSense: Automatically Captioning Pictures using Smartphones
IEEE Transactions on Mobile Computing, 2013.
A Novel Solution to the Energy Hole Problem in Sensor Networks
Journal of Network and Computer Applications, 2013.
FOCUS: Clustering Crowdsourced Videos by Line-of-Sight
Demo, ACM SenSys 2013
Enabling Context-Awareness in Mobile Systems via Multi-Modal Sensing
Helping Mobile Apps Bootstrap with Fewer Users
ACM UbiComp, Sep 2012.
Faster GPS Via the Sparse Fourier Transform
ACM MobiCom, August 2012.
Efficient and Reliable Low-Power Backscatter Networks
ACM SIGCOMM, August 2012.
Spot Localization using PHY Layer Information
ACM MobiSys, June 2012.
No Need to War-Drive: Unsupervised Indoor Localization
ACM MobiSys, June 2012.
Satellites in Our Pockets: An Object Positioning System using Smartphones
ACM MobiSys, June 2012.
TapPrints: Your Finger Taps have Fingerprints
ACM MobiSys, June 2012.
Nearly Optimal Sparse Fourier Transform
STOC, May 2012.
RxIP: Monitoring the Health of Home Wireless Networks
IEEE Infocom, March 2012.
Simple and Practical Algorithm for Sparse Fourier Transform
SODA, January 2012.
SpinLoc: Spin Once to Know Your Location
ACM HotMobile, February 2012.
CSMA/CN: Carrier Sense Multiple Access with Collision Notificatio
IEEE/ACM Transactions on Networking, 2012.
Successive Interference Cancellation: Carving Out MAC Layer Opportunities
IEEE Transactions on Mobile Computing, 2012.
Avoiding the Rush Hours: WiFi Energy Management via Traffic Isolation
IEEE Transactions on Mobile Computing, 2012.
Saving Power for Mobile Phones via Partial Wi-Fi Scanning
Poster, ACM MobiSys 2012
Distributed Content Storage for Just-in-Time Streaming
Poster, ACM SIGCOMM 2012
No Need to War-Drive: Unsupervised Indoor Localization
Demo, ACM MobiSys 2012
Satellites in Our Pockets: An Object Positioning System using Smartphones
Demo, ACM MobiSys 2012
Lower the bar for app developers: Supporting Collaborative Sensing Applications
Poster, ACM MobiSys 2012
Building Blocks for Tomorrow's Mobile App Store
No Time to CountDown: Migrating Backoff to the Frequency Domain
ACM MobiCom, September 2011.
They Can Hear Your Heartbeats: Non-Invasive Security for Implanted Medical Devices
ACM SIGCOMM, August 2011.
Best Paper Award
Avoiding the Rush Hours: WiFi Energy Management for Mobile Devices
ACM MobiSys, June 2011.
Best Paper Nominee, Invited to IEEE TMC Journal
TagSense: A Smartphone based Approach to Automatic Image Tagging
ACM MobiSys, June 2011.
Using Mobile Phones to Write in Air
ACM MobiSys, June 2011.
SwitchBoard: A Matchmaking System for Multiplayer Mobile Games
ACM MobiSys, June 2011.
PeerCast: Improving Link Layer Multicast through Cooperative Relaying
IEEE Infocom, April 2011.
The Case for Context-Aware Compression
ACM Hotmobile, February 2011.
Precise Indoor Localization using PHY Information
ACM Hotnets, November 2011.
LinkSense: Beyond Wireless Carrier Sensing
IEEE Communication Letters, February 2011.
Shuffle: Transmission Reordering in Wireless Networks
IEEE/ACM Transactions on Networking, 2011.
Smart Association Control In Wireless Mobile Environment Using Max-Flow
IEEE/ACM Transactions on Network and Service Management, 2011.
Multi-Hop Wireless Energy Transfer in WSNs
IEEE Communication Letters, 2011.
Avoiding the Rush Hours, WiFi Energy Management via Traffic Isolation
Demo, ACM MobiSys 2011
Awarded Demo Runner Up
Precise Indoor Localization with PHY Layer Information
Poster, ACM MobiSys 2011
You Driving? Talk to You Later
Poster, ACM MobiSys 2011
Awarded Best Poster
TagSense - Smartphone-based Approach to Automatic Image Tagging
Demo, ACM MobiSys 2011
Sniffing Traffic to Measure User Attention in a Conference
HotPlanet Workshop Data Contest (held with ACM MobiSys 2011)
Awarded Third Prize
How to Convince Your Dean that You are a Good Researcher
ACM Sigmobile Computer Communications Review (MC2R), Aug 2011.
"Did You See Bob?": Human Localization using Mobile Phones
ACM MobiCom, September 2010.
CSMA/CN: Carrier Sense Multiple Access with Collision Notification
ACM MobiCom, September 2010.
SourceSync: A Distributed Wireless Architecture for Exploiting Sender Diversity
ACM SIGCOMM, September 2010.
MoVi: Mobile Phone based Video Highlights via Collaborative Sensing
ACM MobiSys, June 2010.
Sensor Assisted Wireless Communication
IEEE LANMAN (Invited Paper), May 2010.
AccuRate: Constellation Based Rate Estimation in Wireless Networks
NSDI, April 2010.
Towards Mobile Phone Localization without War-Driving
IEEE Infocom, March 2010.
Listen (on the Frequency Domain) Before You Tal
ACM Hotnets, October 2010.
Successive Interference Cancellation: A Back-of-the-Envelope Perspective
ACM Hotnets, October 2010.
Modeling Broadcasting using Directional Antennas in DTNs as an Epidemic Dynamics
IEEE JSAC (Journal on Sel. Areas of Comm.), 2010.
P2DAP: Detecting Sybil Attacks in Vehicular Ad Hoc Networks
IEEE JSAC (Journal on Sel. Areas of Comm.), 2010.
Listen Before You Talk, But on the Frequency Domain
Poster, ACM MobiCom 2010
Fair Bandwidth Allocation in Wireless Network Using Max-Flow
Poster, ACM Sigcomm 2010
Sensor Assisted Wireless Communications
Poster, ACM MobiSys 2010
PHY Assisted Energy Management in Wireless Networks
Poster, ACM MobiSys 2010
DataSpots: Offloading Cellular Traffic via Managed P2P Transfers
Poster, ACM MobiCom 2010
Order Matters: Transmission Reordering in Wireless Networks
ACM MobiCom, September 2009.
SurroundSense: Mobile Phone Localization Via Ambience Fingerprinting
ACM MobiCom, September 2009.
Hiding Stars with Fireworks: Location Privacy through Camouflage
ACM MobiCom, September 2009.
VUPoints: Collaborative Sensing and Video Recording through Mobile Phones
ACM MobiHeld (with ACM Sigcomm) August, 2009
PhonePoint Pen: Using Mobile Phones to Write in Air
ACM MobiHeld (with ACM Sigcomm) August, 2009
Winner of Hoffmann Krippner Award
Stereosight: A Package for Viewing and Creating Stereogram Images
misc
FEASC, May, 2009.
Best Undergraduate Paper Award
EnLoc: Energy Efficient Localization for Mobile Phones
IEEE Infocom mini-conference, April, 2009.
Energy-efficient Localization Via Personal Mobility Profiling
MobiCase, (Invited paper), October 2009.
Realtime Location Privacy Via Mobility Prediction: Creating Confusion at Crossroads
ACM Hotmobile, February, 2009.
Breaking Away from Collision Avoidance: Towards Collision Detection in Wireless Networks
ACM Hotnets, October 2009.
The Wired Internet as a Control Channel for Residential Wireless LANs
Poster, ACM MobiCom 2009 SRC
Rethinking Collisions in Wireless Networks
Poster, ACM MobiCom 2009
SurroundSense: Mobile Phone Localization Using Ambient Sound and Light
Ext. Abstract, ACM MC2R
Winner of ACM Mobicom 2008 Student Research Competition (SRC)
>Highlights: Event Coverage in Mobile Social Networks
Poster, ACM MobiCom 2009 SRC
Runners Up at ACM MobiCom 2009 Student Research Competition (SRC)
Link Layer Multicast using Smart Antennas: No Client Left Behind
IEEE ICNP, October, 2008.
AAMPL: Accelerometer Augmented Mobile Phone Localization
ACM MELT, (with MobiCom 08), September, 2008.
Micro-Blog: Sharing and Querying Content through Mobile Phones and Social Participation
ACM MobiSys, June 2008.
Message in Message (MIM): A Case for Reordering Transmissions in Wireless Networks
ACM Hotnets, October, 2008.
Aggregation in Sensor Networks: Optimally Trading Information for Energy
Technical Report, January 2008
BeamCast: Harnessing Beamforming Capabilities for Link Layer Multicast
Poster, ACM MobiCom 2008.
CacheCloak: Enabling Realtime Location Privacy for Mobile Users
Poster, ACM MobiCom 2008.
Energy-Aware Localization Using Mobile Phones
Poster, ACM MobiSys.
Designing a Rate-Based Transport Protocol for Wired-Wireless Networks
IEEE Broadnets, Sep 2007.
Privacy-Preserving Detection of Sybil Attacks in Vehicular Ad Hoc Networks
Mobiquitous, Aug 2007.
MAC-Layer Capture: A Problem in Wireless Mesh Networks Using Beamforming Antennas
IEEE SECON, June 2007.
Capture-Aware Staggering for Concurrent Transmissions
Poster, ACM CoNext 2007.
Micro-Blog: Mapcasting from Mobile Phones to Virtual Sensor Maps
Poster + Demo, Mobicom and Sensys, 2007.
MobiPING: Pinging in Mobile Social Networks
Poster, HotMobile 2007.