Ying-Ren Chien received the B.S. degree in electronic engineering from the National Yunlin University of Science and Technology, Douliu, Taiwan, in 1999, the M.S. degree in electrical engineering, and the Ph.D. degree in communication engineering from National Taiwan University, Taipei, Taiwan, in 2001 and 2009, respectively. Since 2012, he has been with the Department of Electrical Engineering, National Ilan University, Yilan, Taiwan. Since 2018, he has been a Full Professor and Head of the Department. His research interests include adaptive signal processing theory, active noise control, machine learning, indoor positioning, Internet of Things, and interference cancelation.
	Mu Zhou received the B.S., M.S., and Ph.D. degrees in Information and Communication Engineering from the Harbin Institute of Technology, Harbin, China, in 2006, 2008, and 2012, respectively. He was a Joint-cultivated Ph.D. Student at the University of Pittsburgh, USA, and a Post-Doctoral Research Fellow at the Hong Kong University of Science and Technology, China. Afterwards, he joined Chongqing University of Posts and Telecommunications (CQUPT), Chongqing, China, where he has been a Full Professor since 2014. He is now the Associate Dean of the Graduate School of CQUPT and the Vice Director of the Mobile Communications Engineering Research Center, Ministry of Education. He serves as the Editor of Physical Communication (Elsevier) and EURASIP Journal on Wireless Communications and Networking (Springer), and an Early Career Advisory Board Member for the IEEE/CAA Journal of Automatica Sinica. His research interests include wireless localization and sensing, information fusion, machine learning, and quantum radar. He is a Senior Member of IEEE.
	Ao Peng received the M.Sc degree and the Ph.D in Communication and Information System from Xiamen University, Fujian, China, in 2011 and 2014, respectively. In 2015, he joined the School of Informatics, Xiamen University, where he is currently an Associate Professor. His research interests including satellite navigation, indoor navigation and multi-source positioning and navigation.
	Ni Zhu is a researcher at the laboratory GEOLOC of University Gustave Eiffel. She received her engineering degree in aeronautic telecommunications from the Ecole Nationale de l’Aviation Civile (ENAC), France in 2015 and the Ph.D. degree in science of information and communication from the University of Lille, France in 2018. Her recent research is specialized in GNSS channel propagation modeling in urban environments, positioning integrity monitoring for terrestrial safety-critical applications, multi-sensory fusion techniques for indoor/outdoor pedestrian positioning assisted by artificial intelligence. She is the co-chair of the foot-mounted IMU-based positioning track of Indoor Positioning and Indoor Navigation (IPIN) Competition since 2020.
	Joaquín Torres-Sospedra is postdoctoral fellow at Universidade do Minho linked to the H2020-MSCA-IF “ORIENTATE”. Until 2021, he was the CEO at UBIK Geospatial Solutions and research collaborator at the Institute of New Imaging Technologies at Universitat Jaume I (Spain). He has had a Ph.D. since 2011 about Ensembles of Neural Networks and Machine Learning from Universitat Jaume I. He has authored 150+ articles in international journals and conference proceedings. His current research interests include indoor positioning solutions based on Wi-Fi and BLE, Machine Learning, and Evaluation. Dr. Torres-Sospedra is the chair of the Smartphone-based track of IPIN Competition since 2015. He is also the chair of the IPIN International Standards Committee since 2018.