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Email and discussion:

Canvas: https://canvas.uw.edu/courses/1372009
Zoom: https://zoom.us/meeting/722086109

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Topics:

• Signal processing fundamentals
• Acoustic device and device-free tracking
• Physiological sensing using phones and speakers
• IMU tracking and GPS localization
• Wi-Fi localization and sensing
• Designing and building IoT device hardware
• Backscatter systems
• Mobile privacy and security
• Robotics mobile systems

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Course schedule:

Date	Topic	Resources
03/31/2020 and 04/02/2020	Introduction and Signal Processing Basics:	Slide 1 Additional Readings: Signal and Systems course Video on Aliasing and Nyquist Video on negative frequencies
04/07/2020	Wave propagation + Acoustic ranging	Slide 2 Papers: BeepBeep: a high accuracy acoustic ranging system using COTS mobile devices
04/09/2020	Device-free tracking and Doppler effect	Slide 3 Papers: SoundWave: using the doppler effect to sense gestures FingerIO: Using Active Sonar for Fine-Grained Finger Tracking Device-free gesture tracking using acoustic signals
04/14/2020	Phase-based tracking Presentations: SoundTrak: Continuous 3D Tracking of a Finger Using Active Acoustics (15 minutes) Sonoloc: Scalable positioning of commodity mobile devices (15 minutes)	Papers: ApneaApp: Contactless Sleep Apnea Detection on Smartphones
04/16/2020	FMCW-based tracking	Papers: ApneaApp: Contactless Sleep Apnea Detection on Smartphones Opioid overdose detection using smartphones
04/21/2020	Sensor arrays Presentations: MilliSonic: Pushing the Limits of Acoustic Motion Tracking (15 minutes) Detecting middle ear fluid using smartphones (15 minutes)
04/23/2020	Angle of Arrival algorithms	Sensor array slides Additional Readings: Bartlett Beamformer and MVDR Beamformer in the Browser Capon and Bartlett Beamforming Two decades of array signal processing research
04/28/2020	IMU systems Presentations: AIM: Acoustic Imaging on a Mobile (15 minutes) BackDoor: Making Microphones Hear Inaudible Sounds (15 minutes) DolphinAttack: Inaudible Voice Commands (15 minutes)	Readings: Motion sensors
04/30/2020	GPS systems
05/05/2020	Wi-Fi Sensing Presentations: Hummingbird: Energy Efficient GPS Receiver for Small Satellites (15 minutes)	Papers: Whole-Home Gesture Recognition Using Wireless Signals Bringing Gesture Recognition To All Devices
05/07/2020	Radar Sensing Presentations: Feasibility and Limits of Wi-Fi Imaging (15 minutes) Capturing the human figure through a wall (15 minutes)	Papers: 3D Tracking via Body Radio Reflections
05/12/2020	PHY layer for Wi-Fi
05/14/2020	Cancelled
05/19/2020	MAC layer for Wi-Fi
05/21/2020	WiFi-based device localization Presentations: ArrayTrack: A Fine-Grained Indoor Location System (15 minutes) Decimeter-Level Localization with a Single WiFi Access Point (15 minutes) Position Tracking for Virtual Reality Using Commodity WiFi (15 minutes)
05/26/2020	Light based sensing and communication Presentations: The DarkLight Rises:Visible Light Communication in the Dark (15 minutes) Practical Human Sensing in the Light (15 minutes) AmphiLight: Direct Air-Water Communication with Laser Light (15 minutes)
05/28/2020	Backscatter communication	Papers: Ambient Backscatter: Wireless Communication Out of Thin Air Wi-Fi Backscatter: Internet Connectivity for RF-Powered Devices Passive Wi-Fi: Bringing Low Power to Wi-Fi Transmissions
06/02/2020	Backscatter communication Presentations: FM Backscatter: Enabling Connected Cities and Smart Fabrics (15 minutes)	Papers: Passive Wi-Fi: Bringing Low Power to Wi-Fi Transmissions Inter-Technology Backscatter: Towards Internet Connectivity for Implanted Devices (15 minutes)
06/04/2020	Low-Power systems Presentations: Battery-Free Cellphone (15 minutes) Towards Battery-Free HD Video Streaming (15 minutes) LoRa Backscatter: Enabling The Vision of Ubiquitous Connectivity (15 minutes) Underwater Backscatter Networking (15 minutes)

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Assignments:

Design an acoustic gesture recognition system on an Android or Apple phone: Assignment 1 (Due 4/24/2020)
Measure tilt using accelerometer and gyroscope on the phone: Assignment 2 (Due 5/12/2020)
Real-time screen-camera communication using the alpha channel: Assignment 3 (Due 6/1/2020)

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Project:

• Wednesday (6th May): Email Shyam to set up meeting to discuss project proposals
• Friday (8th May): Submit the proposal
• Project delivery (June 12th): Written report, 20 min Zoom presentation to Shyam
• 1-2 people per group
• Expectation: Target doing something that can lead to high impact publication (e.g. Mobicom, Ubicomp, CHI, etc.)

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Grading:

3 hands-on assignments:

• Every 2 weeks
• Requires programming phones, microcontrollers and etc. (20+20+20% in all)

Class presentation of one paper (10%)
Final research project (30%)

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