Securing Wireless Transmissions at the Air Interface

In this talk, we discuss how properties of the wireless medium and wireless devices can be utilized to enhance wireless security. We start with a short review of so-called physical-layer security techniques and then study intrusion detection at the physical layer in detail. We give examples for features that can be utilized, we discuss necessary conditions for a reliable detection performance and their impact on system parameters, and we analyze how packet filtering at the physical layer impacts the delay performance of the system.