Cloud based wireless networks named also as Cloud Radio Access Networks (C-RANs) emerge as appealing architectures for next-generation wireless/cellular systems whereby the processing/encoding/decoding is migrated from the local base-stations/radio units (RUs) to a control/central units (CU) in the “cloud”. The network operates via fronthaul digital links connecting the CU and the RUs (operating as relays).
The uplink and downlink are examined from a network information theoretic perspective, with emphasis of simple oblivious processing at the RUs, which is attractive also from the practical point of view.
The analytic approach, applied to simple wireless/cellular models illustrates the considerable performance gains associated with advanced network information theoretically inspired techniques, carrying also practical implications.
An outlook, pointing out interesting theoretical directions, referring also to Fog radio access networks (F-RAN), concludes the presentation.
Note: The overview is based on joint studies with I.E. Augerri, G. Caire, S.H. Park, O. Sahin, O. Simeone and A. Zaidi. The research of S. Shamai has been supported by the European Union’s Horizon 2020, Research And Innovation – Program: 694630.
About the speaker: Shlomo Shamai (Shitz) received the BSc., MSc., and PhD degrees in electrical engineering from the Technion—Israel Institute of Technology, in 1975, 1981 and 1986 respectively.
During 1975-1985, he was with the Communications Research Labs, in the capacity of a Senior Research Engineer. Since 1986 he is with the Department of Electrical Engineering, Technion—Israel Institute of Technology, where he is now a Technion Distinguished Professor, and holds the William Fondiller Chair of Telecommunications. His research interests encompass a wide spectrum of topics in information theory and statistical communications.
Dr. Shamai (Shitz) is an IEEE Life Fellow, an URSI Fellow, a Member of the Israeli Academy of Sciences and Humanities and a Foreign Member of the US National Academy of Engineering. He is the recipient of the 2011 Claude E. Shannon Award, the 2014 Rothschild Prize in Mathematics/Computer Sciences and Engineering and the 2017 IEEE Richard W. Hamming Medal. He is a co-recipient of the 2018 Third Bell Labs Prize for Shaping the Future of Information and Communications Technology.
He has been awarded the 1999 van der Pol Gold Medal of the Union Radio Scientifique Internationale (URSI), and is a co-recipient of the 2000 IEEE Donald G. Fink Prize Paper Award, the 2003, and the 2004 Joint IT/COM Societies Paper Award, the 2007 IEEE Information Theory Society Paper Award, the 2009 and 2015 European Commission FP7, Network of Excellence in Wireless COMmunications (NEWCOM++, NEWCOM#) Best Paper Awards, the 2010 Thomson Reuters Award for International Excellence in Scientific Research, the 2014 EURASIP Best Paper Award (for the EURASIP Journal on Wireless Communications and Networking), the 2015 IEEE Communications Society Best Tutorial Paper Award and the 2018 IEEE Signal Processing Best Paper Award.
Dr. Shamai (Shitz) is listed as a Highly Cited Researcher (Computer Science) for the years 2013/4/5/6/7/8. He is also the recipient of 1985 Alon Grant for Distinguished Young Scientists and the 2000 Technion Henry Taub Prize for Excellence in Research. He has served as Associate Editor for the Shannon Theory of the IEEE Transactions on Information Theory, and has also served twice on the Board of Governors of the Information Theory Society. He has also served on the Executive Editorial Board of the IEEE Transactions on Information Theory and on the IEEE Information Theory Society Nominations and Appointments Committee, and serves on the IEEE Information Theory Society, Shannon Award Committee.