Full Name: Prof. Milica Stojanovic
Affiliation: Northeastern University
Presentation title: Multicarrier Acoustic Communication in Interference–limited Regimes
Summary of the presentation: Interference-limited regimes occur in underwater acoustic communication scenarios for a variety of reasons: ambient noise levels can be elevated in certain environments, intentional interference can be present in adversarial situations, the signal level can be reduced deliberately so as to achieve security, and multi-user interference can be present in networked systems. In this lecture, we focus on signal detection in such situations, employing a structured coding technique alongside multi-carrier modulation in the form of orthogonal frequency division multiplexing (OFDM). We outline methods for coherent detection, where custom-tailored channel estimation is employed, and for differentially coherent detection, where no channel estimation is needed. Doppler compensation accompanies either method to account for the motion-induced frequency shifting. Upon presenting theoretical considerations that inspire the system design, we discuss the system performance using real data obtained during a mobile acoustic communications experiment.
Personal profile: Milica Stojanovic graduated from the University of Belgrade, Serbia, in 1988, and received the M.S. and Ph.D. degrees in electrical engineering from Northeastern University in Boston, in 1991 and 1993, respectively. She was a Principal Scientist at the Massachusetts Institute of Technology, and in 2008 joined Northeastern University, where she is currently a Professor of Electrical and Computer Engineering. She is also a Guest Investigator at the Woods Hole Oceanographic Institution. Her research interests include digital communications theory, statistical signal processing and wireless networks, and their applications to underwater acoustic systems. Milica is a Fellow of the IEEE, an Associate Editor for the IEEE Journal of Oceanic Engineering, and the Chair of the IEEE Ocean Engineering Society’s Technical Committee for Underwater Communication, Navigation and Positioning. She also serves on the Editorial Board of the IEEE Signal Processing Magazine and has in past served on the Advisory Board of the IEEE Communication Letters, as an Associate Editor for the IEEE Transactions on Signal Processing, and Associate Editor for the IEEE Transactions on Vehicular Technology. Milica is the recipient of the 2015 IEEE/OES Distinguished Technical Achievement Award, 2018 IEEE/OES Distinguished Lectureship, and the 2019 IEEE WICE Outstanding Achievement Award.
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