[CCoE Notice] W205 April 30th Friday 11:00am-12:00am: An Information-Theoretic View of MIMO Secret Communication

[Lewis, Lindsay R]

An Information-Theoretic View of MIMO Secret Communication

Tie Liu, Texas A&M University

W205 April 30th Friday 11:00am-12:00am

Host: Zhu Han and Wei-Chuan Shih

Abstract: Physical layer security has been an active area of research in
recent years. An important physical layer security technology is via
MIMO communications to establish statistical advantage for the
legitimate receiver in certain spatial directions. In this talk, we take
a fundamental view of MIMO secret communication, and present two precise
characterizations of the secrecy capacity of the MIMO Gaussian wiretap
channel. Key to these characterizations is a channel enhancement
argument, which was first used by Weingartein et al. in establishing the
private message capacity region of the MIMO Gaussian broadcast channel.
Two important implications of the secrecy capacity results will be
discussed: one on simultaneously communicating two confidential
messages, the other on simultaneously communicating private and
confidential messages.

Bio: Tie Liu received his B.S. (1998) and M.S. (2000) degrees, both in
Electrical Engineering, from the Tsinghua University, Beijing, China and
M.S. degree in Mathematics (2004) and Ph.D. degree in Electrical and
Computer Engineering (2006) from the University of Illinois at
Urbana-Champaign. Since August 2006 he has been with the Texas A&M
University, where he is currently an Assistant Professor in Electrical
and Computer Engineering. His research interests are in the field of
information theory, wireless communication, and statistical signal
processing. Prof. Liu is a recipient of the M. E. Van Valkenburg
Graduate Research Award (2006) from the University of Illinois at
Urbana-Champaign and the Faculty Early Career Development (CAREER) Award
(2009) from the National Science Foundation.

 

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