Prof. Jianghui Li, University of Southampton, UK (Invitation talk)
Presentation title: Efficient Use of Space-time Clustering for Underwater Acoustic Communications
Abstract: Underwater acoustic communication channels are characterized by the spreading of received signals in space and time. The spread is often limited to a small number of space-time clusters. In the study, the space-time clustering is exploited in a proposed receiver designed for guard-free orthogonal frequency-division multiplexing (OFDM) with superimposed data and pilot signals. For separation of space clusters, the receiver utilizes a vertical linear array (VLA) of hydrophones, whereas for combining delay-spread signals within a space cluster, a time-domain equalizer is used. We show that techniques exploiting the space-time clustering demonstrate an improved detection performance. The comparison is done using signals transmitted by a moving transducer, and recorded on a 14-element non-uniform VLA in sea trials at distances of 46 km and 105 km.
Personal profile: Prof. Jianghui Li received the B.S. degree in communications engineering from Huazhong University of Science and Technology, Wuhan, China in 2011, the M.Sc. degree in communications engineering, and the Ph.D. degree with receiving the K. M. Stott Prize for excellent research in electronics engineering from the University of York, U.K., in 2013 and 2017, respectively. He has been the first researcher receiving the IEEE OES scholarship in U.K.
From 2011 to 2012, he served as a Research Assistant with the Chinese Academy of Sciences, Beijing, China. From 2017 to 2021, he served as a Research Fellow with the University of Southampton, U.K. Since 2021, he has been a Full Professor in Marine Science. His current research interests include global warming, ocean engineering, and underwater acoustics. |
