Transferring the Full-Duplex Radio Technology from Wireless Networking to Defense and Security

Abstract

Classically, the in-band full-duplex (IBFD) radio technology that has recently been revolutionizing modern wireless communications was used in the form of same-frequency simultaneous transmit and receive (SF-STAR) operation in continuous-wave radars. Thus far, the main motivation for IBFD operation in commercial wireless communication systems has been to improve their spectral efficiency. In this invited paper, we suggest that IBFD/SF-STAR radios could bring about a paradigm shift in defense applications in the form of a multifunction military full-duplex radio (MFDR) by integrating tactical communications, signals intelligence, and electronic warfare as well as investigate the prospects of transferring the concept to civilian/commercial security and privacy applications in the form of a radio shield.