In-band full-duplex (IBFD) operation has emerged as an attractive solution for increasing the throughput of wireless communication systems and networks. With IBFD, a wireless terminal is allowed to transmit and receive simultaneously in the same frequency band. This tutorial paper reviews the main concepts of IBFD wireless. One of the biggest practical impediments to IBFD operation is the presence of self-interference, i.e., the interference that the modem's transmitter causes to its own receiver. This tutorial surveys a wide range of IBFD self-interference mitigation techniques. Also discussed are numerous other research challenges and opportunities in the design and analysis of IBFD wireless systems. Index Terms-Full-duplex, simultaneous transmit and receive, wireless communications. T HE wireless revolution has resulted in ever-increasing demands on our limited wireless spectrum, driving the quest for systems with higher spectral efficiency. Among the various ways to increase spectral efficiency, in-band full-duplex (IBFD) operation has recently gained attention. (See Section II-B for a rapidly growing list of publications.) The main idea behind inband full-duplex is as follows. Most contemporary communication systems contain terminals (e.g., base stations, relays, or mobiles) that function as both transmitters and receivers. Conventionally, these terminals operate in half-duplex or out-ofband full-duplex, meaning that they transmit and receive either at different times, or over different frequency bands. Enabling wireless terminals to transmit and receive simultaneously over the same frequency band (i.e., IBFD operation) offers the potential to double their spectral efficiency, as measured by the Manuscript
In one of the earliest works on in-band full-duplex for wireless networks, the authors in REF surveyed a range of SIC techniques and touched on the main challenges facing full-duplex wireless networks.
In-Band Full-Duplex Wireless: Challenges and Opportunities
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Mathematics Computer Science