João Alves (UComms 2021 General Chair), OES AdCom member
The UComms conference series, Organised by the NATO Centre for Maritime Research and Experimentation (CMRE), is focused on working towards a deep understanding of the propagation of communication signals underwater and the performance of necessary higher-level protocols with the objective of supporting the intelligent choice of underwater communications standards, as a foundation for interoperability.
This highly regarded, academic conference has been held every other year since 2012 and was set to have its fifth edition in early September 2020.
With the new world context imposed by the COVID-19 pandemic, on May 2020, the UComms organising team issued a survey targeted at UComms’ authors and community of interest (including the technical committee members and UComms 2018 attendees). The intention of the survey was to collect the feedback of such interested parties with the ultimate goal of educating a decision for the 2020 edition of UComms.
The answers collected showed a clear preference for postponing the conference. This came with little surprise as UComms has always been highly regarded for its ability to remain specialised, attract the best researchers and promote face-to-face discussions that move the field forward.
Following such clear indication, and after close consultation with the conference sponsors, a decision was taken to postpone the conference until September 2021.
UComms Webinar 2020
In order to maintain community engagement, CMRE, the IEEE OES and the NATO Allied Command Transformation organised the first UComms Webinar series. The Webinar series, which was held between the 1st and 4th of December, 2020, consisted of four invited talks broadcast live though CMRE’s social media channels. The line-up of the talks was as follows:
Milica Stojanovic, Northeastern University (USA): “Underwater Acoustic Communications: Is Transmit Beamforming a Possibility?”
Ian Akyildiz, Technology Innovation Institute (Abu Dhabi): “Next Decade Challenges for Underwater Wireless Communication Networks”
Mandar Chitre, National University of Singapore (Singapore): “Underwater Acoustics in the Age of Differentiable and Probabilistic Programming”
João Alves, NATO STO CMRE (Italy): “JANUS: Why It Matters and the Critical Path into the Future”

Thanks to the sponsoring organizations and the speakers who generously agreed to take part in this event, the webinar was free and open to all. This format proved to be very effective at engaging wide participation and promoting open discussion.
All materials from the webinar (abstracts, bios and the lectures) remain available through the UComms website (www.ucomms.net), navigating to “UComms Webinar 2020”.
UComms 2021
Given the prolonged effects of the pandemic and the restrictions still in place at the time, there was no possibility to organise an in-person conference in Italy in September 2021. The conference still had a commitment to the authors to publish their manuscripts (originally submitted for the conference in 2020) and for that reason it was decided to hold a remote conference on the dates of the planned in-person event: from August 31st to September 2nd.
Just like with all UComms editions, this conference was organised in a series of structured sessions that were coordinated by key researchers in the field, aiming at gathering top quality contributions that could lead to a vibrant exchange of knowledge and increase common understanding of the state-of-the-art. The multiple sessions were handled in a single track, giving the opportunity to all participants to follow all the talks and take part in all discussions.
The session organisers took the role of inviting papers, managed the reviews, ranked and selected the final presentations in coordination with the general chairs and conducted their session at the conference.
For UComms 2021 a total of eight sessions were set up:
- “Machine Learning for Adaptive Underwater Communications” (this session was eventually dropped and papers absorbed in other sessions);
- “The Roles of Deterministic and Statistical Methods in Acoustic Propagation Modelling for Underwater Acoustic Communications Simulation and Performance Prediction”;
- “Networking, Localisation and Scheduling”;
- “Next-generation Adaptive Modem Architectures and Cognitive Networking Strategies”;
- “Interoperability and Standards”;
- “Non-Acoustic Underwater Communications”;
- “New Applications Enabled by Next-generation Underwater Acoustic Comms”;
- “Channel-aware Security and Protocol Design.”
A total of 30 short papers (strictly four pages plus references) were accepted for presentation and publication after the usual peer review process of UComms. The program was then arranged to fit a daily time window of approximately four hours to accommodate as much as possible the different time zones taking part in the remote presence conference (14:00-18:00 CEST).
The conference was open by CMRE’s director, Dr. Catherine Warner, and proceeded with live presentations of all accepted manuscripts with Q&A sessions moderated by the respective session organisers.

Thanks to the sponsorship structure of the conference and the reduced organizational costs when compared to in-person editions, CMRE was able to conduct UComms free-of-charge for participants and authors, contributing to a significant knowledge sharing opportunity for those interested in the field. A total of 195 delegates registered from around the globe to join the UComms technical presentations.
The book of abstracts of the conference is available in the UComms website (https://www.ucomms.net/docs/UComms21_BookOfAbstracts.pdf) and the video presentations are available in CMRE’s YouTube channel (www.youtube.com/user/PAOCMRE) for the scientific community for a-posteriori viewing.
A Special edition of the JOE will be setup with a selection of articles to be expanded and published in full article form.
Future UComms Conferences
UComms is now a well-established international biennial conference series, bringing together participants from around the globe to share their latest developments in the ever-evolving topic of underwater communications. UComms success was achieved through the recurring participation of the top scholars in the field, the strict peer review process, the focused topic, and the opportunities created for networking and discussions.
The current plan is to hold the next edition of UComms in 2022, returning to a full in-presence format for what will be its 10th anniversary. The call for papers is expected to be issued before the end of 2021.


Dr. James V. Candy is the Chief Scientist for Engineering and former Director of the Center for Advanced Signal & Image Sciences at the University of California, Lawrence Livermore National Laboratory. Dr. Candy received a commission in the USAF in 1967 and was a Systems Engineer/Test Director from 1967 to 1971. He has been a Researcher at the Lawrence Livermore National Laboratory since 1976 holding various positions including that of Project Engineer for Signal Processing and Thrust Area Leader for Signal and Control Engineering. Educationally, he received his B.S.E.E. degree from the University of Cincinnati and his M.S.E. and Ph.D. degrees in Electrical Engineering from the University of Florida, Gainesville. He is a registered Control System Engineer in the state of California. He has been an Adjunct Professor at San Francisco State University, University of Santa Clara, and UC Berkeley, Extension teaching graduate courses in signal and image processing. He is an Adjunct Full-Professor at the University of California, Santa Barbara. Dr. Candy is a Fellow of the IEEE and a Fellow of the Acoustical Society of America (ASA) and elected as a Life Member (Fellow) at the University of Cambridge (Clare Hall College). He is a member of Eta Kappa Nu and Phi Kappa Phi honorary societies. He was elected as a Distinguished Alumnus by the University of Cincinnati. Dr. Candy received the IEEE Distinguished Technical Achievement Award for the “development of model-based signal processing in ocean acoustics.” Dr. Candy was selected as a IEEE Distinguished Lecturer for oceanic signal processing as well as presenting an IEEE tutorial on advanced signal processing available through their video website courses. He was nominated for the prestigious Edward Teller Fellowship at Lawrence Livermore National Laboratory. Dr. Candy was awarded the Interdisciplinary Helmholtz-Rayleigh Silver Medal in Signal Processing/Underwater Acoustics by the Acoustical Society of America for his technical contributions. He has published over 225 journal articles, book chapters, and technical reports as well as written three texts in signal processing, “Signal Processing: the Model-Based Approach,” (McGraw-Hill, 1986), “Signal Processing: the Modern Approach,” (McGraw-Hill, 1988), “Model-Based Signal Processing,” (Wiley/IEEE Press, 2006) and “Bayesian Signal Processing: Classical, Modern and Particle Filtering” (Wiley/IEEE Press, 2009). He was the General Chairman of the inaugural 2006 IEEE Nonlinear Statistical Signal Processing Workshop held at the Corpus Christi College, University of Cambridge. He has presented a variety of short courses and tutorials sponsored by the IEEE and ASA in Applied Signal Processing, Spectral Estimation, Advanced Digital Signal Processing, Applied Model-Based Signal Processing, Applied Acoustical Signal Processing, Model-Based Ocean Acoustic Signal Processing and Bayesian Signal Processing for IEEE Oceanic Engineering Society/ASA. He has also presented short courses in Applied Model-Based Signal Processing for the SPIE Optical Society. He is currently the IEEE Chair of the Technical Committee on “Sonar Signal and Image Processing” and was the Chair of the ASA Technical Committee on “Signal Processing in Acoustics” as well as being an Associate Editor for Signal Processing of ASA (on-line JASAXL). He was recently nominated for the Vice Presidency of the ASA and elected as a member of the Administrative Committee of IEEE OES. His research interests include Bayesian estimation, identification, spatial estimation, signal and image processing, array signal processing, nonlinear signal processing, tomography, sonar/radar processing and biomedical applications.
Kenneth Foote is a Senior Scientist at the Woods Hole Oceanographic Institution. He received a B.S. in Electrical Engineering from The George Washington University in 1968, and a Ph.D. in Physics from Brown University in 1973. He was an engineer at Raytheon Company, 1968-1974; postdoctoral scholar at Loughborough University of Technology, 1974-1975; research fellow and substitute lecturer at the University of Bergen, 1975-1981. He began working at the Institute of Marine Research, Bergen, in 1979; joined the Woods Hole Oceanographic Institution in 1999. His general area of expertise is in underwater sound scattering, with applications to the quantification of fish, other aquatic organisms, and physical scatterers in the water column and on the seafloor. In developing and transitioning acoustic methods and instruments to operations at sea, he has worked from 77°N to 55°S.
René Garello, professor at Télécom Bretagne, Fellow IEEE, co-leader of the TOMS (Traitements, Observations et Méthodes Statistiques) research team, in Pôle CID of the UMR CNRS 3192 Lab-STICC.
Professor Mal Heron is Adjunct Professor in the Marine Geophysical Laboratory at James Cook University in Townsville, Australia, and is CEO of Portmap Remote Ocean Sensing Pty Ltd. His PhD work in Auckland, New Zealand, was on radio-wave probing of the ionosphere, and that is reflected in his early ionospheric papers. He changed research fields to the scattering of HF radio waves from the ocean surface during the 1980s. Through the 1990s his research has broadened into oceanographic phenomena which can be studied by remote sensing, including HF radar and salinity mapping from airborne microwave radiometers . Throughout, there have been one-off papers where he has been involved in solving a problem in a cognate area like medical physics, and paleobiogeography. Occasionally, he has diverted into side-tracks like a burst of papers on the effect of bushfires on radio communications. His present project of the Australian Coastal Ocean Radar Network (ACORN) is about the development of new processing methods and applications of HF radar data to address oceanography problems. He is currently promoting the use of high resolution VHF ocean radars, based on the PortMap high resolution radar.
Hanu Singh graduated B.S. ECE and Computer Science (1989) from George Mason University and Ph.D. (1995) from MIT/Woods Hole.He led the development and commercialization of the Seabed AUV, nine of which are in operation at other universities and government laboratories around the world. He was technical lead for development and operations for Polar AUVs (Jaguar and Puma) and towed vehicles(Camper and Seasled), and the development and commercialization of the Jetyak ASVs, 18 of which are currently in use. He was involved in the development of UAS for polar and oceanographic applications, and high resolution multi-sensor acoustic and optical mapping with underwater vehicles on over 55 oceanographic cruises in support of physical oceanography, marine archaeology, biology, fisheries, coral reef studies, geology and geophysics and sea-ice studies. He is an accomplished Research Student advisor and has made strong collaborations across the US (including at MIT, SIO, Stanford, Columbia LDEO) and internationally including in the UK, Australia, Canada, Korea, Taiwan, China, Japan, India, Sweden and Norway. Hanu Singh is currently Chair of the IEEE Ocean Engineering Technology Committee on Autonomous Marine Systems with responsibilities that include organizing the biennial IEEE AUV Conference, 2008 onwards. Associate Editor, IEEE Journal of Oceanic Engineering, 2007-2011. Associate editor, Journal of Field Robotics 2012 onwards.
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. 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. Milica’s research interests include digital communications theory, statistical signal processing and wireless networks, and their applications to underwater acoustic systems. She has made pioneering contributions to underwater acoustic communications, and her work has been widely cited. She is a Fellow of the IEEE, and serves as an Associate Editor for its Journal of Oceanic Engineering (and in the past for Transactions on Signal Processing and Transactions on Vehicular Technology). She also serves on the Advisory Board of the IEEE Communication Letters, and chairs the IEEE Ocean Engineering Society’s Technical Committee for Underwater Communication, Navigation and Positioning. Milica is the recipient of the 2015 IEEE/OES Distinguished Technical Achievement Award.
Dr. Paul C. Hines was born and raised in Glace Bay, Cape Breton. From 1977-1981 he attended Dalhousie University, Halifax, Nova Scotia, graduating with a B.Sc. (Hon) in Engineering-Physics.