ECE Distinguished Speaker Seminar
System-on-Chip ICs in the New Age of "Edge" Computing:
From LiFi Networks to "Smart" Wearables and Beyond
Dr. Valencia Joyner Koomson
Dr. Martin Luther King Jr. Visiting Professor, Massachusetts Institute of Technology
Assistant Professor, Department of Electrical and Computer Engineering, Tufts University
November 5, 2021
ENGR 1101 (Jajodia Auditorium)
To RSVP, please email [log in to unmask] to include your name, G# and GMU email. All attendees must complete Mason COVID Health✓™ and receive a "green light" status on the day of the event.
The talk will also be streamed live via zoom:
It is projected that the number of IoT devices will reach 100 billion within the next decade. This exponential growth in demand for connected sensors and wearable computing has accelerated system-on-chip development. Optoelectronic systems will play a major
role in this paradigm shift for both sensing and optical wireless networking due to the RF spectrum crunch. In this talk we will present key breakthroughs in the development of optoelectronic system-on-chip systems for indoor LiFi networking, funded by the
NSF Engineering Research Center on Light Enabled Systems & Applications. A digitally-tuned CMOS LED driver circuit architecture, integrating dimming control and advanced multi-carrier data modulation schemes (e.g. orthogonal frequency division multiplexing),
is presented. We will present the first demonstration of a 3D heterogeneously integrated optical multi-input/multi-output (MIMO) receiver combining tessellated InGaAs photodetector arrays with silicon CMOS readout circuitry operating at bit rates > 50Gb/s.
Optical MIMO systems combined with space-time coding yield an increase channel capacity and efficiency, as well as, combat scintillation and alignment requirements for free-space optical (FSO) links. To realize millimeter-wave transceivers for high-speed wireless
applications, this talk will present a novel hexagonal ferrite thin film deposition system applicable to Si and GaN and substrates for next generation self-bias ferrite devices operating in millimeter wave frequency range. We will present disruptive technology
at the intersection of electrical engineering and biomedical sciences, including a non-invasive device implementing frequency-domain near-infrared imaging techniques to study biological tissue, including functional brain studies, cerebral oximetry, stroke
assessment, and optical mammography. The device implements NIR spectroscopy methods in a compact form factor using a patented system-on-chip (SoC) platform. We will conclude the presentation with an overview of the promise of mobile technology for health care
delivery in resource-constrained setting using machine learning methods, and wearable devices for chronic disease management.