Monday 23 October 2017 at 13.00-17.00
5G Circuits and Systems: Theory, Practice, and Implementation Efficiency
Lecturer: Liang Liu, Henrik Sjöland, and Ove Edfors, Lund University

Abstract & Outline

The coming 5G communication aims for the connection of tens of billion devices with some reaching several gigabit-per-second data rates and milliseconds service latency. While the band-width is a scare resource, revolution in wireless technology is demanded, such as mmWave communication, Massive MIMO (multiple-input multiple output) technology, and new modula-tion techniques. mmWave communication provides opportunity to explore new spectrums. Mas-sive MIMO, a new type of multi-user multi-antenna system and perhaps the ultimate embodiment of Multiple-Input Multiple-Output communications, is another enabling technique for 5G wire-less network in the sub-6GHz range.

Deploying an excessive large number of antennas at the base-station, Massive MIMO has the potential to provide orders of magnitude improvement in spectrum efficiency (bits/second/Hertz). Area spectral efficiency (bits/second/Hertz/square-kilometer) improvements over 4G technolo-gies may range from ten to one-thousand, depending on the mobility of the terminals. Other bene-fits include energy efficiency (bits/Joule) gains in excess of one-thousand, the possibility to use low-cost analog components, and much simplified user equipment.

This tutorial will cover from theory, systems, to integrated circuits design (both digital and analog) for key 5G technologies, especially for Massive MIMO. The outline of the tutorial will be:

  1. Professor Ove Edfors will start with theory and system, covering fundamentals of MIMO and Massive MIMO, channel measurement and modelling, and potential applications.
  2. Associate Professor Liang Liu will then introduce signal processing, real-time testbed design and real-life measurement results, including world record on spectrum efficiency, and digital processing processor design for Massive MIMO.
  3. Professor Henrik Sjöland will discuss implementation of the analog and radio frequency part of 5G transceivers in CMOS technology, including the world’s first fully integrated remote antenna unit with optical interface, digitally assisted front-ends with spectrum sensing, and millimeter wave frequency generation.

Short Biographies of the Instructors

Ove Edfors was born in Örnsköldsvik, Sweden in 1966. He received the M.Sc. degree in comput-er science and electrical engineering in 1990 and the Ph.D. degree in signal processing in 1996, both from Luleå University of Technology, Sweden. In 1997 he joined the staff at the Department of Electrical and Information Technology, Lund University, Sweden, where he since 2002 is pro-fessor of Radio Systems. His research interests include statistical signal processing and low-complexity algorithms with applications in wireless communications. He has a long experience with multi-carrier systems and has in this context contributed to the standardization of both wire-less LAN and cellular systems. In the context of Massive MIMO, his research focus is on how realistic propagation characteristics influence system performance and base-band processing re-quirements.

Liang Liu is Associate Professor and Docent at Electrical and Information Technology Department, Lund University, Sweden. He received his Ph.D. in 2010 from Fudan University in China. In 2010, he was with Electrical, Computer and Systems Engineering Department, Rensselaer Polytechnic Institute, USA as a visiting researcher. He joined Lund University as a Post-doc re-searcher in 2010 and is now associate professor there. His research interest includes signal pro-cessing for wireless communication and digital integrated circuits design. Liang is active in several EU and Swedish national projects, including FP7 MAMMOET, VINNOVA SoS, and SSF HiPEC, DARE. He is a board member of the IEEE Swedish Solid-State Circuits/Circuits and Systems chapter. He is also a member of the technical committees of VLSI systems and applications and CAS for communications of the IEEE Circuit and Systems society.

Henrik Sjöland received the M.Sc. degree in electrical engineering from Lund University, Sweden, in 1994, and the PhD degree from the same university in 1997. In 1999 he was a postdoc at UCLA on a Fulbright scholarship. He has been an associate professor at Lund University since year 2000, and a full professor since 2008. Since 2002 he is also part time employed at Ericsson Research, where he is currently a Research Fellow. He is heading the research group in Radio Frequency Integrated Circuit Design at Lund University, and he has authored or co-authored more than 170 international peer reviewed journal and conference papers and holds patents on more than 20 different inventions. Henrik Sjöland is currently an associate editor of IEEE Transactions on Circuits and Systems – I, and he has been an associate editor of IEEE Transactions on Circuits and Systems – II and a member of the Technical Program Committee of the European Solid-State Circuits Conference (ESSCIRC). He is a Senior Member of IEEE. He has successfully been the main supervisor of 13 PhD students to receive their degrees. His research interests include design of radio frequency, microwave, and mm wave integrated circuits, primarily in CMOS technology.