Joonas Kokkoniemi received his B.Sc. (Tech.), M.Sc. (Tech.), and Dr.Sc. (Tech.) degrees in communications engineering from University of Oulu, Finland in 2011, 2012, and 2017, respectively. Currently he is a postdoctoral research fellow at Centre for Wireless Communications, University of Oulu. He is an adjunct professor (docent) in the field of THz communications technology (since 2021). From September to November 2013, he was a visiting researcher at Tokyo University of Agriculture and Technology, Tokyo, Japan. From March to October 2017, he was a visiting postdoctoral researcher at State University of New York at Buffalo, Buffalo, NY, USA. His research interests are in THz band and mmWave channel modeling and communication systems.