In-Band Full-Duplex Wireless Systems Overview

Detailed systems engineering is required to integrate multiple self-interference cancellation (SIC) techniques for in-band full-duplex (IBFD) wireless designs enabling novel applications. These SIC methods span the propagation, analog and digital domains of a typical transceiver, and must be individually analyzed before combining them to create an IBFD system. This paper discusses the various techniques within these domains as well as presents a survey of measured IBFD systems that have successfully demonstrated SIC across multiple domains. Additionally, several key research areas are outlined, and highlight the need for a resource that details both the fundamentals and state-of-the-art performance of IBFD techniques, systems and applications in order to accelerate the adoption of this technology within networking standards.