In this talk we will explore the effect of delayed or no channel state information (CSI) on physical layer security in various wireless channel models. The assumption of perfect eavesdropper CSI being available at the transmitters, though commonly used in the literature as an idealization, is often impractical as it involves feedback of channel state measurements by the passive eavesdropper to the transmitters. Further, delay and network conditions in the feedback link may also impact the CSI quality available at the transmitters. We will discuss how such imperfections in the CSI available at the transmitters affect physical layer security in various channel models, including the wiretap channel with helpers, multiple access wiretap channels, interference channels with an eavesdropper and broadcast channels with confidential messages, determining, in most cases, the optimal secure degrees of freedom of the networks under imperfect CSI conditions.
Pritam Mukherjee is a postdoctoral researcher at Stanford University hosted by Prof. Tsachy Weissman and Prof. Ayfer Ozgur. He received his B. Tech (Hons) with a major in Electronics and Electrical Communication Engineering and a minor in Computer Science and Engineering from Indian Institute of Technology (IIT), Kharagpur in 2010. He completed his Ph.D. in Electrical and Computer Engineering at the University of Maryland, College Park in Fall 2016.
He received the Kulkarni Summer Research Fellowship at University of Maryland, College Park, in 2016. His research interests include information theoretic physical layer security and network information theory.