[CCoE Notice] Cognitive spectrum sharing through ARQ: June 21st 11:00am E323-D3

[Lewis, Lindsay R]

Title:

Cognitive spectrum sharing through ARQ

June 21st 11:00am E323-D3

 

 

Speaker:

Wei Zhang

The University of New South Wales

 

Abstract:

In this talk, an opportunistic sharing scheme, referred to as Spectrum
sHaring with ARQ Retransmissions and Probing (SHARP), is introduced for
cognitive radio networks. We consider a pair of cognitive radio users
co-existing with a pair of ARQ-based primary users. The cognitive user
overhears the ARQ feedback sent from the receiver of the primary system,
and then selects an appropriate transmission mode to access the primary
channel. The proposed SHARP approach aims to exploit various spectrum
sharing opportunities based on the ACK/NACK of primary users only.
Analytical achievable throughput is derived and it is demonstrated that
the performance of cognitive radio system increases dramatically by
employing SHARP.

 

Wei Zhang received the B.S and M.S degrees from Jilin University, China,
in 1998 and 2002, respectively, and Ph.D. degree in Electronic
Engineering from The Chinese University of Hong Kong in 2005. He was a
Research Fellow at the Department of Electronic and Computer
Engineering, Hong Kong University of Science and Technology in
2006-2007. Since 2008, he has been with the School of Electrical
Engineering and Telecommunications, The University of New South Wales,
Sydney, Australia, where he is a Senior Lecturer. His current research
interests include cognitive radio, cooperative communications,
space-time coding, and multiuser MIMO. He received the best paper award
at the 50th IEEE Global Communications Conference (GLOBECOM'07),
Washington DC in 2007 and the IEEE Communications Society Asia-Pacific
Outstanding Young Researcher Award in 2009. He serves co-chair of
Communications Theory Symposium of ICC 2011.

 

E-mail: wzhang at ee.unsw.edu.au

Web: www.ee.unsw.edu.au/~wzhang/

 

 

 

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