Transitioning to 6G Part 1: Radio Technologies. - Sharad Sambhwani; Zdravko Boos; Sidharth Dalmia; Arman Fazeli; Bertram Gunzelmann; Anatoliy Ioffe; Murali Narasimha; Francesco Negro; Laxminarayana S. Pillutla; John Zhou (IEEE Wirel. Commun., 2022)