The IEEE ComSoc New York Chapter is launching a series of technical seminars for the New York area IEEE members and the general public. We will invite researchers and professionals to share their latest work on a variety of topics in communications and related areas. This is the second seminar of the series.
Date: Monday, December 28, 2020
Time: 7:00 PM to 8:00 PM Eastern Time (US & Canada)
Application of Simple DSP Techniques in Practical Underwater Acoustic OFDM systems
Prof. Lei Wan, Xiamen University
OFDM has been a popular modulation scheme for underwater acoustic communications. Considering the practical situations in both the channel condition and the computational complexity in the receiver, two efficient approaches based on simple DSP techniques are proposed for underwater acoustic OFDM systems, to deal with the multipath channel estimation and the Doppler scale factor estimation problems respectively. It is found out that both the path delay estimation and the Doppler scale factor estimation problems can be solved by similar techniques adopted for the classical single tone frequency estimation problem, i.e., by interpolation between neighboring samples. Details about the problem formulation, derivation, simulation and field test data decoding results will be provided in the presentation. It is shown that the proposed approaches improve significantly in both performance and computational complexity.
Lei Wan (Member, IEEE) received the B.S. degree in electronic information engineering from Tianjin University (TJU), Tianjin, China, in 2006, the M.S. degree in signal and information processing from the Beijing University of Posts and Telecommunications (BUPT), Beijing, China, in 2009, and the Ph.D. degree in electrical engineering from the University of Connecticut (UCONN), Mansfield, CT, USA, in 2014. He is currently an Associate Professor with the School of Informatics, Xiamen University (XMU), Xiamen, China. His research interests include algorithm design, system development, and performance analysis for underwater acoustic communication systems. Dr. Wan received the IEEE Communications Society’s Exemplary Reviewer Award for the IEEE Communications Letters in 2013. He served as a Technical Reviewer for many journals and conferences, and is now an Associate Editor for the IEEE Open Journal of Communications Society.