CSE562: Mobile Systems & Applications

CSE562: Mobile Systems & Applications (offered as CSE 599y - 21sp)

Spring 2021

MW 1:30-2:50, online meetings via Zoom.

Instructor:

Shyam Gollakota
Office hours: by appointment (Email anytime)

Teaching Assistants:

Anran Wang
Office hours: by appointment (Email anytime)

Email and discussion:

Canvas: https://canvas.uw.edu/courses/1453463
Zoom: https://washington.zoom.us/j/97952699516

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

Course schedule:

Date	Topic	Resources
03/29/2021	Introduction and Signal Processing Basics	Slide 1 Additional Readings: Signal and Systems course Video on Aliasing and Nyquist Video on negative frequencies
03/31/2021	Wave propagation + Acoustic ranging	Slide 2 Papers: BeepBeep: a high accuracy acoustic ranging system using COTS mobile devices
04/05/2021	Android and iOS development tutorial	Slides - Android Sample codes - Android Doc and sample codes - iOS
04/07/2021	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
04/12/2021	Phase-based tracking	Papers: ApneaApp: Contactless Sleep Apnea Detection on Smartphones
04/14/2021	FMCW-based tracking	Papers: ApneaApp: Contactless Sleep Apnea Detection on Smartphones Opioid overdose detection using smartphones
04/19/2021	Sensor arrays
04/21/2021	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
04/26/2021	IMU systems Presentations: Detecting Middle Ear Fluid Using Smartphones (15 minutes) DolphinAttack: Inaudible Voice Commands (15 minutes)	Readings: Motion sensors
04/28/2021	GPS systems
05/03/2021	Wi-Fi Sensing	Papers: Whole-Home Gesture Recognition Using Wireless Signals Bringing Gesture Recognition To All Devices
05/05/2021	Radar Sensing Presentations: Acoustruments: Passive, Acoustically-Driven, Interactive Controls for Devices (15 minutes) viband: High-Fidelity Bio-Acoustic Sensing Using Commodity Smartwatch Accelerometers (15 minutes) MilliSonic: Pushing the Limits of Acoustic Motion Tracking (15 minutes) Hummingbird: Energy Efficient GPS Receiver for Small Satellites (15 minutes)	Papers: 3D Tracking via Body Radio Reflections
05/10/2021	PHY layer for Wi-Fi	Slides
05/12/2021	MAC Layer for WiFi
05/17/2021	WiFi-based device localization
05/19/2021	Presentations: Real-Time Screen-Camera Communication Behind Any Scene (15 minutes) Practical human sensing using light (15 minutes) Touché: Enhancing Touch Interaction onHumans, Screens, Liquids, and Everyday Objects (15 minutes) Sniffing visible light communication through walls (15 minutes)
05/24/2021	(Cancelled)
05/26/2021	Light based sensing and communication Presentations: Whole-Home Gesture Recognition Using Wireless Signals Soli: ubiquitous gesture sensing with millimeter wave radar 3D Tracking via Body Radio Reflections ArrayTrack: A Fine-Grained Indoor Location System
05/31/2021	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) 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
06/02/2021	Low-Power systems

Assignments:

Design an acoustic gesture recognition system on an Android or Apple phone: Assignment 1 (Due 4/26/2021)
Measure tilt using accelerometer and gyroscope on the phone: Assignment 2 (Due 5/17/2021)
Real-time screen-camera communication using the alpha channel: Assignment 3 (Due 6/2/2021)

Project:

Wednesday (3th May): Discuss project ideas with Shyam and Anran
Project delivery (June 9th): 20 min Zoom presentation to Shyam and Anran
1-2 people per group

Grading:

Late policy: Assignments may be handed in up to ten days late, at a penalty of 10% of the maximum grade per day.

Every 2 weeks
Requires programming phones (20+20+20% in all).

Class participation (10%)
Class presentation of one paper (10%)
Final research project (20%)