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Tutorial 2


Signal Waveform Design for Underwater Acoustic Communications


Dr. Charalampos C. Tsimenidis 

Prof. Bayan S. Sharif



The tutorial will cover the design of signalling waveforms that are suitable for utilisation in underwater acoustic (UA) modems. These will include PN sequences with low auto and crosscorrelation properties, chirp design, in conjunction with pulse shaping and modulation schemes such as orthogonal frequency division multiple access (OFDM), direct sequence and multicarrier code division multiple access (DS- and MC-CDMA). The tutorial will also address underwater channel modelling and simulation methodologies that are useful in evaluating "dry" performance of UA systems. Furthermore, the design of receiver algorithms will be considered that utilise adaptive receive arrays, carrier-phase and symbol timing recovery, Doppler compensation and multi-user detection methodologies. The tutorial is suitable for modem engineers with limited or no experience in this area to assist them in the design of UA based communication systems.

Presenter Bio


Charalampos C. Tsimenidis is a Senior Lecturer in Signal Processing for Communications in the School of Electrical, Electronic, and Computer Engineering. He received his MSc with distinction and PhD from the University of Newcastle upon Tyne in 1999 and 2002, respectively. His main research interests are in the area adaptive array receivers for wireless communications including demodulation algorithms and protocol design for underwater acoustic channels. He has published over 100 conference and journal papers. During the last ten years he has made contributions in the area of receiver design to several European funded research projects including LOTUS, SWAN, and ACME.

Bayan S. Sharif is Professor of Digital Communications and Head of the School of Electrical, Electronic and Computer Engineering. He received the bachelor and doctorate degrees from Queen's University of Belfast and Ulster University, N. Ireland, in 1984 and 1988, respectively. He then held a Research Fellowship at Queen's University of Belfast before he was appointed as Lecturer at Newcastle University in 1990, and then as Senior Lecturer and Professor in Digital Communications in 1999 and 2000, respectively. Prof. Sharif has research interests in digital communications with a focus on wireless receiver structures and optimisation of wireless networks. He has published over 200 journal and conference papers, and held UK and EU research grants in digital communications, underwater acoustics and signal processing worth over £3M. He is a Chartered Engineer and Fellow of the IET.

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