Physical layer authentication using controlled inter symbol interference

Spectrum security and enforcement is one of the major challenges that need to be addressed before cognitive radios (CR) can be widely deployed for opportunistic spectrum sharing. One of the mechanisms needed to carry out spectrum enforcement is the authentication or identification of transmitters. We propose a novel scheme for authenticating transmitters at the physical layer called partial response signaling with authentication (PRSA). Our results indicate that PRSA is superior to the prior art in terms of detection performance.