From 1996 to 2005, he held various research and specialist positions with the telecom industry, e.g., Ericsson Research, Telia Research, and TeliaSonera, Stockholm, Sweden. From 2001 to 2005, he was the Swedish Delegate with the European Cost Action 273, and from 2018 to 2020, he was the Dutch Delegate with the European Cost Action IRACON. He has been one of the pioneers in producing the first standardized OTA measurement techniques for 3GPP, and devising novel OTA techniques, e.g., the random-LOS and the hybrid antenna characterization setups. He has contributed to, or initiated various European research projects, e.g., more recently, is3DMIMO, WAVECOMBE, 5VC, and Build-Wise projects under the auspices of the H2020 European Research and Innovation Program. He also contributed to the international 3GPP and the ITU standardization bodies. From 2009 to 2010, he held a Marie Curie Senior Research Fellowship with the Centre for Wireless Network Design, University of Bedfordshire, Luton, U.K. From 2010 to 2014, he held a postdoctoral position with the Electromagnetic Engineering Laboratory, KTH-Royal Institute of Technology, Stockholm. From 2014 to 2018, he was an Assistant Professor with the Chalmers University of Technology. From 2018 to 2023, he was an Associate Professor with the Department of Electrical Engineering, University of Twente, Enschede, The Netherlands.
He is the author, or co-author, of more than 175 scientific and technical journal publications, conference papers and abstracts, book chapters as well as standardization contributions and other scientific manuscripts. He is the coauthor and the coeditor of the textbook LTE-Advanced and Next Generation Wireless Networks-Channel Modelling and Propagation (Wiley, 2012). His current research interests include, but are not limited to, mmWave array antenna design, MIMO antenna systems, electromagnetic theory, fundamental limitations on antenna-channel interactions, radio propagation channel measurements, modeling and simulations, wireless performance in the built environment, and the OTA characterization of antenna systems and wireless devices for communication and sensing.
Summary of Main “Firsts” in Research Milestones
I have conceptualized, defined, devised, or otherwise fundamentally contributed, alone or together with collaborating researchers, the following research milestones in radio systems:
- 2000 – Standardized 3G Spatial Channel Model (EU COST ACTION 259 & 3GPP at Ericsson)
- 2004 – Standardized Over-The-Air (OTA) Characterization of Wireless Devices (EU COST ACTION 273 & 3GPP at Telia/TeliaSonera)
- 2009 – General Mathematical Framework for the Characterization of Antenna and Propagation Channels Interactions (at Lund University)
- 2009 – Physical Limitations on Antennas in Random Propagation Channels by the Spherical Vector Wave Expansion of the Electromagnetic Field (at Lund University)
- 2010 – Massive MIMO Channel Measurements (Lund University at University of Bedfordshire)
- 2014 – Virtual Massive MIMO Channel Measurement in a Reverberation Chamber (at KTH-Royal Institute of Technology)
- 2015 – OTA-aided antenna design (at Chalmers)
- 2015 – The Random-LOS OTA Characterization method (at Chalmers)
- 2015 – Random-LOS OTA of Active Wireless Devices on a Vehicle (Volvo Cars and RISE at Chalmers)
- 2017 – Wireless Building Performance Evaluation (Ranplan at Chalmers)
- 2020 – The Hybrid Multipath-LOS OTA Chamber (Chalmers at University of Twente)