Events Calendar

Security in Large Wireless Networks

Speaker: Dennis Goeckel,
Electrical and Computer Engineering,
University of Massachusetts - AmherstAbstract: Recently, there has been significant interest in providing secure communication in wireless networks. Here we consider the challenge of providing information theoretic secrecy in the presence of eavesdroppers, and, in contrast to prior work, focus in particular on the difficulty that arises due to a lack of knowledge of the eavesdropper location. To combat the resulting "near eavesdropper" problem, we employ cooperative jamming to confuse the eavesdropper and multi-user diversity to find relays that receive the packet in the presence of such jamming. For an environment with a single source and destination, along with N system nodes, we consider the number of eavesdroppers that can be tolerated for both the case when eavesdroppers do potentially have a significant geographical advantage over the receiver, and when they do not. Next, we consider multipair unicast transmission in large networks with n source-destination pairs and demonstrate an achievable tradeoff between the per-session througput of the system and the tolerable intensity of eavesdroppers.Biography: Dennis Goeckel split time between Purdue University and Sundstrand Corporation from 1987-1992, receiving his BSEE from Purdue in 1992. From 1992-1996, he was at the University of Michigan, where he received his MSEE in 1993 and his Ph.D. in 1996, both in Electrical Engineering with a specialty in Communication Systems. In September 1996, he joined the Electrical and Computer Engineering department at the University of Massachusetts, where he is currently a Professor. His current research interests are in the areas of communication systems and wireless network theory.Host: Keith Chugg, chugg@usc.edu, EEB 500A, 213-740-7294.

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Gerrielyn Ramos