Chengqi Ma received the B.S. degree in Communication Engineering from Harbin Institute of Technology (HIT), Harbin, China, in 2012 and the M.S. degree in Wireless Communication from Lund University, Lund, Sweden, in 2015. He is currently pursuing a Ph.D. degree in Department of Electronic and Electrical Engineering (EEE), University College London (UCL), London, United Kingdom. His research interests include the development of Indoor positioning, navigation and tracking system, Human activity recognition and Internet of Things (IoT).