This tutorial has moved to virtual only.

T6: In-Band-Full-Duplex Radio for Integrated Access/Backhaul and Integrated Sensing/Communications in 6G Networks

Co-Organizer: Tharm Ratnarajah, University of Edinburgh, UK

Abstract: In-band-full-duplexing (IBFD) is an emerging paradigm for wireless communication in 6G wireless networks wherein the two communication directions can simultaneously utilize the same frequency band. By using the antenna, analog and digital interference cancellation techniques to mitigate the ensuing self-interference, the feasibility of IBFD links for standalone wireless links has been recently demonstrated. Furthermore, they allow simultaneous transmission and sensing, opening up avenues for new random-access schemes. The objective of this tutorial is to provide an overview of the following ingredients:
1) To provide a recent advance on IBFD radio design in the frequency range 2 (FR2) band (≥25.250GHz); specifically, we review the antenna domain cancellation, wideband optical domain analog cancellation and digital domain cancellations. We will provide wideband hardware impairment models and hardware nonlinear effect models; 2) To describe the design and analysis of IBFD transmission in the recently proposed 3GPP integrated access and backhaul (IAB) networks. Here we provide a 3GPP-inspired design for the IBFD-IAB networks in the FR2 band, which can enhance the spectral efficiency and coverage while reducing the latency; 3) To lay out the basics concepts of IBFD integrated sensing and communications (ISAC) and summarize the key advantages. We considered the multi-vehicle scenario and performed tracking and prediction using an extended Kalman filter at the IBFD-ISAC nodes; 4) To give a vision for IBFD for IAB and ISAC research towards in 6G Networks. We also describe the implementation constraints, research challenges, opportunities and potential solutions.

 

Tharm Ratnarajah

Bio: Prof. Tharm Ratnarajah is currently with the Institute for Digital Communications, the University of Edinburgh, Edinburgh, UK, as a Professor in Digital Communications and Signal Processing. He was the Head of the Institute for Digital Communications during 2016-2018. Prior to this, he held various positions at McMaster University, Hamilton, Canada, (1997-1998), Nortel Networks (1998-2002), Ottawa, Canada, University of Ottawa, Canada, (2002-2004), Queen’s University of Belfast, UK, (2004-2012). His research interests include signal processing and information-theoretic aspects of beyond 5G wireless networks, full-duplex radio, mmWave communications, random matrices theory, interference alignment, statistical and array signal processing and quantum information theory. He has published over 400 peer-review publications in these areas and holds four U.S. patents. He has supervised 16 PhD students and 21 post-doctoral research fellows and raised $11+ million USD of research funding. He was the coordinator of the EU projects ADEL (3.7M €) in the area of licensed shared access for 5G wireless networks, HARP (4.6M €) in the area of highly distributed MIMO, as well as EU Future and Emerging Technologies projects HIATUS (3.6M €) in the area of interference alignment and CROWN (3.4M €) in the area of cognitive radio networks. Dr Ratnarajah was an associate editor of IEEE Transactions on Signal Processing, 2015-2017 and Technical co-chair, The 17th IEEE International Workshop on Signal Processing advances in Wireless Communications, Edinburgh, UK, 3-6, July 2016. Prof. Ratnarajah is a member of the American Mathematical Society and Information Theory Society and a Fellow of Higher Education Academy (FHEA).