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“...good performance codes with low complexity.”
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It provides a nice mathematical structure to be used in
many different systems.
Does it describe a new discovery or a new methodology
that's useful to others?
Yes, it provides a new method to design codes for
multiple-input multiple-output (MIMO) channels. It has
applications in wireless communication systems and networks.
Could you summarize the significance of your paper in
layman's terms?
It provides high-rate and good performance codes with low
complexity.
How did you become involved in this research, and were
there successes or failures along the way?
I was one of the inventors of space-time block coding. Our
first invention in this area, orthogonal space-time block
coding, provided a framework to design low complexity codes
with very good performance. The deficiency of the orthogonal
design was that high rate codes were not possible for more
than two antennas. The quasi-orthogonal structure proposed in
this paper solves this problem.
If applicable, what are the social or political
implications of your research?
The codes are good candidates for different wireless
communication systems and networks. As such, they improve the
performance of cell phones, wireless networks, laptop
connectivity, and so on. This improved connectivity and
performance, hopefully, will have positive social impacts.
Hamid Jafarkhani
Associate Professor and Associate Chair for Graduate Affairs
Department of Electrical Engineering and Computer Science
Deputy Director
Center for Pervasive Communications and Computing
University of California
Irvine, CA, USA
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