"Secure Wireless Communications with Untrusted Relays: A Physical Layer Perspective"

Dr. Farshad Lahouti, Associate Professor, ECE, University of Tehran

November 14th (Thursday), 2:00pm
Harold Frank Hall (HFH), Room 4164

Wireless communications inherently suffers the ease of eavesdropping because of its broadcasting nature. And as the eavesdroppers are passive, the act of eavesdropping remains unnoticeable to the legitimate parties. This issue is particularly amplified in relay networks, where potentially untrusted relays are meant to facilitate the communications. In this talk we explore techniques that can be used to secure the communications from a physical layer perspective. We begin with secure communications over the fading wiretap channels and then present a framework for link adaptation and untrusted relay assignment (LAURA) for secure cooperative communications. Different settings of the availability of channel state information and the associated performance bounds are investigated. This provides insights to devise simplified yet effective solutions in practical scenarios of interest.

About Dr. Farshad Lahouti:

photo of farshad lahouti Farshad Lahouti is currently a visiting professor at California Institute of Technology (Caltech). He received his B.Sc. from the University of Tehran, Iran and his Ph.D. from the University of Waterloo, Canada both in Electrical Engineering in 1997 and 2002, respectively. Between 2002 and 2004, he worked first as a post doctoral fellow and subsequently as a research assistant professor at the University of Waterloo. He then joined the School of Electrical and Computer Engineering, University of Tehran, where he is currently an associate professor. He is also the founder and director of the Center for Wireless Multimedia Communications. His current research interests are cross-layer design for wireless communications, network information and coding theory, communications security and the theoretical interactions of communication networks with other networks in molecular, power and neural systems. Dr Lahouti is the recipient of a number of awards. He was a member of the founding board at the University of Tehran Technology Incubator from 2005 to 2008, and served as the head of the Communications Engineering Department from 2008 to 2012.

Hosted by: Professor Kenneth Rose, Signal Compression Lab