Princeton Wireless Distinguished Seminar Series
Speaker: Visa Koivunen, Aalto University, Finland
Title: Waveform Design for Integrated Sensing and Communications
Day: Monday, November 29, 2021
Time: 4:30 pm
Room: J323, E-Quad
Host: H. Vincent Poor and Yasaman Ghasempour
Abstract: Integrated Radio Frequency Sensing and Communications (ISAC) systems operate in shared and often congested or even contested spectrum with the goal of providing both reliable communication and radar capabilities. Radars have a multitude of tasks and performance criteria that are often handled in a simplistic manner. We intend to shed more light on the radar tasks and objectives. We consider scenarios where sensing and communications systems cooperate or are codesigned for mutual beneﬁt. Multiuser systems that share dynamic spectrum among diﬀerent radio systems performing communications or sensing are of particular interest. In multiuser systems, interference is the main factor limiting performance. We have developed methods for both radar and communication centric waveform designs and interference management in cooperative and codesigned systems. The design examples include multicarrier waveforms, beamformers and precoding and decoding techniques based on interference alignment.
Bio: Visa Koivunen (IEEE Fellow, EURASIP Fellow) received his D.Sc. (EE) degree with honors from the University of Oulu, Finland, Dept. of Electrical Engineering. He received the primus doctor award among the doctoral graduates in years 1989-1994. He is a member of Eta Kappa Nu. From 1992 to 1995 he was a visiting researcher at the University of Pennsylvania, Philadelphia, USA. Since 1999 he has been a full Professor of Signal Processing at Aalto University (formerly Helsinki UT), Finland and is currently Aalto Distinguished Professor of Electrical Engineering. He received the Academy of Finland Distinguished professor position in 2010. Years 2003-2006 he was adjunct full professor at the Moore School of Electrical Engineering, University of Pennsylvania, Philadelphia, USA. During his sabbatical terms in 2006-2007 and 2013-2014 he was a visiting fellow at Princeton University, NJ, USA and has had yearly mini-sabbaticals there since 2010 (excluding covid-19 years). He has also been a part-time Visiting Fellow at Nokia Research Center (2006-2012).
He has served in editorial boards of IEEE SP Letters, IEEE TR on Signal Processing, EURASIP Signal Processing and IEEE SP Magazine. He has been a member of the IEEE Signal Processing Society technical committees SPCOM-TC and SAM-TC and AESS Radar Systems Panel. He has served in IEEE Joseph Fourier Award, IEEE Jack S. Kilby Medal committees, IEEE SPS Fellow evaluations and AESS Fellow evaluation committees. . In 2015-2016 he served as IEEE Distinguished Lecturer of signal processing society.
Dr. Koivunen's research interest include statistical, sensor array and multichannel signal processing, machine learning and their applications in wireless comms, future radar systems, multisensor systems and data science. He has published more than 450 papers in international scientific conferences and journals and holds 5 patents. He has advised 29 doctoral theses in these research topics. He co-authored the papers receiving the best paper award in IEEE PIMRC 2005, EUSIPCO'2006, EUCAP (European Conference on Antennas and Propagation) 2006 and COCORA 2012. He has been awarded the IEEE Signal Processing Society best paper award for the year 2007 (with J. Eriksson) and for the second time in 2017 (with Zoubir et al). He has been awarded the 2015 EURASIP (European Association for Signal Processing) Technical Achievement Award for fundamental contributions to statistical signal processing and its applications in wireless communications, radar and related fields.