Professor Costas N. Georghiades

1

Erik Jonsson School of Engineering and Computer
Science and the Dallas Chapter of IEEE Signal
Processing Society
Distinguished Lecturer Series 2007
Professor Costas N. Georghiades Texas AM
University
P r e s e n t
On the Estimator-Correlator and the Search for
the Optimum Transmit Point
Abstract Mapping a received noisy signal into
the information symbols that produced it with
minimum average probability of error is a
fundamental problem in digital communications.
The search for the optimum point is complex due
to the discrete and multidimensional nature of
the search space for many current practical
systems and it is made even more difficult by the
need for the search to be done in real-time. The
real-time computation constraint means that the
search must be done efficiently if practical
rates are to be achieved, but also near optimally
for reasonable performance. We look at the
problem of optimum detection in the context of
the estimator-correlator (EC) structure and some
of its implications. In particular, we show how
the EC can motivate near optimal and efficient
decoding for the multi-input multi-output (MIMO)
non-coherent channel and survey briefly some of
the existing general search techniques.
Costas N. Georghiades received the B.E. degree
with distinction from the American University of
Beirut and the M.S. and D.Sc. degrees from
Washington University in 1983 and 1985,
respectively. Since 1985 he has been with the
Electrical Computer Engineering Department at
Texas AM University, where he is currently
Department Head and holder of the Delbert A.
Whitaker Endowed Chair. His general interests are
in the application of information, communication
and estimation theories to the study of
communication systems. He is an IEEE Fellow and
has served in editorial positions with various
IEEE journals, including the Transactions on
Communications, the Transactions on Information
Theory, the JSAC and Communications Letters.
Recent conference service includes his being
General co-Chair of the 2004 Information Theory
Workshop and Technical Program co-Chair for the
2005 Communication Theory Workshop. He was until
recently chair of the Communication Theory
Technical Committee and chair of the Fellows
Evaluation Committee of the Information Theory
Society. He currently serves as Editor-in-Chief
of IEEE Communications Letters.
Date Friday, Mar. 30, 2007 Time
1100 a.m. Place Engineering and Computer
Science Complex UTD Campus TI Auditorium 2.102
Erik Jonsson School of Engineering and Computer
Science The University of Texas at Dallas 2601 N.
Floyd Road Richardson, TX 75083
For more information Phone [phone] www.utd
allas.edu