Prof. Yonina Eldar, IVS-Webinar | "PACE Tech: Physics and Algorithms Coupled to Enhance Technology"
IVS Webinar Series
https://www.ivs.org.il/IVS2016/Templa...
January 19, 2022, 15:00 (Israel time)
"PACE Tech: Physics and Algorithms Coupled to Enhance Technology"
Yonina Eldar
Professor of Electrical Engineering
Faculty of Mathematics and Computer Science
The Weizmann Institute of Science
Abstract
We live in a digital world where data processing and storage is performed using computers. The digital revolution affects all aspects of our life from communications through radar, and medical imaging systems. This revolution is based on sensing the physical signals around us, and representing the acquired signals by digital bits that can be processed by a computer. However, clearly information is lost in this process: digitization rates are limited by the mathematical bounds of Nyquist and Shannon, and acquisition devices are limited by physical bounds such as the diffraction limit. Therefore, we cannot obtain infinite precision in time, space and frequency. In this talk we consider how the interplay between science, physics and algorithms can pave the way to enhanced technology that is not limited by the bounds above. We suggest treating sensing and processing in an end-to-end fashion, and exploiting physical principles to allow interesting new ways to transmit data in a coded fashion, which cannot be viewed, processed or heard directly. Instead the information is embedded indirectly in ways that are more efficient on the one hand, but can be properly decoded by appropriate mathematical algorithms on the other. This coupling of physics and algorithms paves the way to devices that can transmit, sample and process at rates and resolutions exceeding known bounds. We will illustrate applications of these ideas to a variety of problems in ultrasound and optical imaging, radar systems, communication channels and more, and show several demos of real-time prototypes overcoming standard bounds including a wireless ultrasound probe, super resolution ultrasound, and sub-Nyquist automotive radar.