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Abstract
The main factor
to deteriorate the quality of the
desired signal in the wireless communications
is a frequency selective fading
due to multipath propagation and
co-channel interference. Therefore,
the spatial signal processing technology
using the array antenna has been
one of the important approaches
for improving the communication
quality. In addition, this technology
plays an effective role in the MIMO
system. Therefore, this short course
expresses the optimization of the
array antenna for its high performance
by explaining the significance of
eigenvalues and the eigenvectors
of various matrices used in the
array antenna. Particularly, we
pay fundamental attention to a gain
of the array antenna, optimum weights
of adaptive arrays, and the estimation
methods of direction of arrival
(DOA) of the incident waves as some
typical examples of the eigenvalues
and the eigenvectors in the array
antenna. Through these demonstrations,
the optimization of array antennas
is discussed.
About the speaker
Nobuyoshi
Kikuma was born in Ishikawa,
Japan, on January 7, 1960. He received
the B.S. degree in electronic engineering
from Nagoya Institute of Technology,
Japan, in 1982, and the M.S. and
Ph.D. degrees in electrical engineering
from Kyoto University, Japan, in
1984 and 1987, respectively. From
1987 to 1988, he was a Research
Associate at Kyoto University. In
1988 he joined Nagoya Institute
of Technology, where he has been
a Professor since 2001. His research
interests include adaptive and signal
processing array, multipath propagation
analysis, mobile and indoor wireless
communication, wireless power transmission,
and electromagnetic field theory.
He received the 4th Telecommunications
Advancement Foundation Award in
1989 and Paper Award from the IEICE
of Japan in 2006. Dr. Kikuma is
a senior member of the IEEE and
a regular member of the IEICE of
Japan.
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