In-Band Full-Duplex Array Architectures and Performance Survey

Emerging wireless systems demand the ability to simultaneously host multiple applications on common hardware and spectral resources. Both of these challenges can be mitigated through the incorporation of in-band full-duplex (IBFD) technology, which allows devices to break traditional time-and frequency-division paradigms by concurrently transmitting and receiving within the same frequency band. While research has focused on omnidirectional IBFD systems, directional alternatives offer the ability the extend the range capabilities. This paper discusses the architectural options for IBFD arrays and presents a performance survey of state-of-the-art prototypes.