ECE Research Seminar March 31, Friday, 12:00 – 1:00 pm, Simrall 104
March 23, 2023
Please join us in Simrall 104 or virtually, Friday, March 31 at 12:00 noon central time for our March ECE Faculty Research Seminar.
Radio Frequency-Powered Internet of Things: From Principle to Practice
Yu Luo | yu.luo@ece.msstate.edu
Abstract: In this seminar, Dr. Luo will introduce the ultra-low-power Internet of Things (IoT) technology to be powered through radio frequency (RF) energy. Using in situ soil sensing as an example, it will be demonstrated that how underground IoT (UIoT) nodes can effectively harvest RF energy from unmanned aerial vehicles (UAVs) for sensing and communication. The talk will cover the development of UIoT nodes from a system-level perspective, detailing the startup circuit, driver, and power management strategy required to receive weak RF energy in the soil. Furthermore, a passive communication method will be introduced, which utilizes RF energy as the carrier signal and modulates the amplitude of the backscattering signal to convey data. The passive communication method greatly reduces the power consumption of UIoT nodes to several microwatts. To overcome the high propagation attenuation in the soil and successfully detect weak backscattering signals, the UIoT node spreads the baseband spectrum through a square chirp. This enables reliable data decoding even in negative signal-to-noise ratio (SNR) conditions. Overall, the energy harvesting and passive communication technology presented offer a battery-free solution for long-term, automated, and non-disruptive parameter measurement, revolutionizing the field of environmental science.
Dr. Yu Luo is an Assistant Professor in the Department of Electrical and Computer Engineering at Mississippi State University. He received his Ph.D. degree from the University of Connecticut in 2015, and his M.S. and B.S. degrees in electrical engineering from the Northwestern Polytechnical University, China, in 2012 and 2009, respectively. Prior to joining MSU, he was a postdoctoral researcher and research scientist at South Dakota School of Mines and Technology (SDSMT). Dr. Luo was a co-recipient of the Best Paper Award in IFIP Networking 2013. His current research mainly focuses on sustainable wireless networks, Cyber-Physical Systems (CPS), Internet of Things (IoT), and underwater cognitive acoustic communications. Dr. Luo has been serving as Technical Program Committee (TPC) members and technical reviewer for dozens of flagship IEEE journals and conferences as well.
* For further information contact: Dr. Jenny Du | du@ece.msstate.edu | 5-2035
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The Department of Electrical and Computer Engineering at Mississippi State University consists of 27 faculty members (including seven endowed professors), seven professional staff, and over 700 undergraduate and graduate students, with approximately 100 being at the Ph.D. level. With a research expenditure of over $14.24 million, the department houses the largest High Voltage Laboratory among North American universities.