Skip to main content
Department of Information Technology

Torbjörn Wigren (IEEE,S'89-M'91-SM'98) was born in Mora, Sweden, in 1961. He received the M.Sc. degree (Engineering Physics) and the Dr. of Technology degree (Automatic Control) from Uppsala University, Uppsala, Sweden, in 1985 and 1990, respectively. Currently, he holds a position as Principal Development Leader at Ericsson AB, where he is responsible for feedback control in cellular 4G and 5G systems.
His industrial experience includes research and development work for several major Swedish companies. He was with Bofors Aerotronics AB 1985-1991, working on image processing, fire control and management of a group with that responsibility. During 1989 and 1990 he was with the Systems and Control Group, Uppsala University, completing his Tekn. Dr. degree. That work was focused on nonlinear and recursive system identification, in particular algorithm development and convergence analysis. At Ericsson Radio Systems AB's R&D-division (1991-1995), voice signal processing department, main tasks included work on the half-rate voice-codecs for the North American cellular TDMA system, as well as for the GSM system. He also worked on acoustic echo control for handsfree. In 1995, he moved to CelsiusTech Systems AB, switching to the data fusion field, with a focus on target type estimation for multi-sensor air surveillance systems. From 1999 to 2001 he developed and adapted multi sensor fusion technology for automotive applications at CelsiusTech Electronics AB. In 2001, he returned to Ericsson Radio Systems AB to work with third generation cellular telephony, in particular development and standardization of technology for cellular location estimation. Other tasks included the design and software development of soft load estimation algorithms for scheduling of WCDMA enhanced uplink channels. He was given the Ericsson Inventor of the Year Award for 2007 for this work, and for contributions to fingerprinting location technology. In 2010-2012 he was recognized as a key contributor to Ericsson AB. In 2014, he took up a position within Ericsson's 5G organization, to work on signal processing and control for 5G radios. He received the Ericsson Impact Award in 2018 for his work. In 2000 he was appointed an adjunct Professor of Automatic Control at the Division of Systems and Control, Department of Information Technology, Uppsala University, Sweden, sponsored by Ericsson AB. Between 2006 and 2012 he held a position as adjunct Professor of Systems Modeling, at the same institution. During 2012-2018 he was again adjunct Professor of Automatic Control at Uppsala University. His academic research interests include nonlinear techniques for recursive identification, estimation and control, in particular applied to delays in cybersecurity for feedback control, reinforcement learning for nonlinear control and constrained optimal control.

Updated  2024-04-25 10:02:55 by Torbjörn Wigren.