- 2021/09 - 現在 Yokohama National University
- 2021/09 - 現在 YRP International Alliance Institute Vice President
- 2021/04 - 現在 Yokohama National University Professor Emeritus
- 2021/03 - 現在 YRP International Alliance Institute Vice President
- 2019/03 - 現在 Yokohama National University Kanagawa Medical Device Regulatory Science Consortium President
- 2007/04 - 現在 Finnish Distinguished Professor, Center of Wireless Communication, University of Oulu,
- 2012/04 - 2021/03 Yokohama National University Research Center for Novel Medical Systems Based on Interdisciplinary Research between Social and Natural Sciences Director
- 2001/04 - 2021/03 Yokohama National University, Graduate School of Engineering, Div. of Physics, Electrical&Computer Eng., Professor
- 2013/03 - 2019/09 University of Oulu Research Institute Japan - CWC-Nippon Co. CEO
- 2014/09 - 2019/03 Yokohama National University Kanagawa Medical Device Regulatory Science Center Director
- 2006/09 - 2019/03 Yokohama National University, Medical ICT Center Director
- 2006 - 2015 University of the Ryukyus Faculty of Engineering Part-time Lecturer
- 2005/04 - 2014/03 Yokohama City University, Graduate School of Medicine, Guest Professor
- 2008/10 - 2013/03 Yokohama National University MEXT Global COE Program on Creation on Interdisciplinary Innovation between Medicine and Engineering Based on Information and Communication Technology COE Leader
- 2008/04 - 2012/03 National Institute of Information and Communications Technology, Medical ICT Institute Program Coodinator
- 2006/04 - 2008/03 National Institute of Information and Communications Technology, Medical ICT Group Group Leader
- 2002/10 - 2007/03 Yokohama National University MEXT 21th Century COE Program on Future Infrastructure Based on Information and Communication TEchnology COE Leader
- 2002/04 - 2006/03 National Institute of Information and Communications Technology, UWB Technology Institute, Director
- 1999/04 - 2005/03 National Institute of Information and Communications Technology, ITS Project, Deputy Head
- 1993/04 - 2005/03 The University of Tokushima Faculty of Engineering Department of Electrical and Electronic Engineering Part-time Lecturer
- 1995/04 - 2004/03 Nara Institute of Science and Technology Part-time Lecturer
- 2002/04 - 2003/03 Hiroshima City University Faculty of Engineering Science Part-time Lecturer
- 1998/04 - 2002/03 Sony Computer Science Laboratories, Inc., Advanced Telecommunication Laboratory, Director
- 1998/04 - 2001/03 Yokohama National University, Div. of Electrical&Computer Eng. , Professor
- 1999/04 - 2000/03 Ehime University Faculty of Engineering Department of Electrical and Electronic Engineering Part-time Lecturer
- 1996/04 - 2000/03 The University of Tokyo Institute of Industrial Science (Department of Informatics and Electronics) Researcher
- 1988/04 - 1998/03 Yokohama National University, Div. of Electrical&Computer Eng. , Associate Professor
- 1997/10 - 1997/12 Tampere University of Technology, Finland Centre for Signal Processing Part-time Lecturer
- 1993/04 - 1996/03 The University of Tokyo Institute of Industrial Science (Department of Informatics and Electronics) Collaborative Researcher
- 1993/06 - 1993/12 University of Sydney, Australia Guest Professor
- 1988/04 - 1990/03 Toyo University Department of Electrical Engineering, Faculty of Engineering Part-time Lecturer
- 1986/04 - 1988/03 Toyo University, Dept. of Electrical Eng., Associate Professor
- 1984/04 - 1986/03 Toyo University, Dept. of Electrical Eng., Lecturer
- 1984/09 - 1985/09 University of Toronto, Dept. of Electrical Eng., Visiting Researcher