The Throughput Cost of Physical Layer Security in Decentralized Wireless Networks

Xiangyun (Sean) Zhou (ANU)

APPLIED SIGNAL PROCESSING SERIES

DATE: 2011-08-04
TIME: 11:00:00 - 12:00:00
LOCATION: RSISE Seminar Room, ground floor, building 115, cnr. North and Daley Roads, ANU
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ABSTRACT:
Security is a pervasive concern in wireless networks since the messages transmitted towards the intended receiver can also be overheard by malicious users. In this talk, the problem of achieving secrecy without using secret keys is considered, which is commonly referred to as the physical layer security. Physical layer security is particularly important in large-scale decentralized networks where key distribution is very expensive and difficult. We look at some interesting results for wireless networks where the nodes are randomly located and discuss the impact of physical layer security constraints on the network throughput.
BIO:
Sean received the B.E. (hons.) degree in electronics and telecommunications engineering and the Ph.D. degree in telecommunications engineering from the Australian National University (ANU), Australia, in 2007 and 2010, respectively. Upon completing his Ph.D. he worked as a postdoctoral fellow at UNIK - University Graduate Center, University of Oslo, Norway. Since June 2011, he is a research fellow within the Research School of Engineering at the ANU. His research interests are in the fields of wireless communications and signal processing, including MIMO systems, ad hoc networks, relay and cooperative communications, and physical layer security. He is a recipient of the Best Paper Award at the 2011 IEEE International Conference on Communications.