1. University of Oulu,Research Unit of Medical Imaging, Physics and Technology, Center for Wireless Communications
2. University of Oulu,Research Unit of Medical Imaging, Physics and Technology,Oulu,Finland
3. University of Oulu,Centre for Wireless Communications,Oulu,Finland
4. University of Oulu,Microelectronics Research Unit,Oulu,Finland
5. Purdue University,Purdue,USA
6. University of Oulu,Research Unit of Medical Imaging, Physics and Technology Optoelectronics and Measurement Techniques Research Unit,Oulu,Finland