High-accuracy Positioning in Multipath Channels


Klaus Witrisal
Graz University of Technology, Austria



Abstract
Highly accurate and reliable radiopositioning – at accuracy levels in the 10 cm range – will enable a large a number of innovative location-based applications, allowing, for example, for a useful real-time interaction of humans and cyber-physical systems. Activity recognition, navigation at "shelf" level, geofencing, process monitoring and process control are among the envisioned services that will be applicable to various sectors, such as manufacturing, logistics, retail, and transportation. This talk reviews the difficulties faced by radiopositioning systems due to multipath propagation. The discussion of theoretical performance limits, arising from these channel impairments, will motivate the requirement for a large signal bandwidth and demonstrate the advantages of multi-antenna systems. Based on this insight, algorithms will be described that leverage the position information available from received radio signals. Experimental results validate the expected limitations and potentials. The foreseen capabilities of upcoming generations of wireless systems will increasingly make high-accuracy positioning available.



Biography
WitrisalKlaus Witrisal
Klaus Witrisal received the Ph.D. degree (cum laude) from Delft University of Technology, Delft, The Netherlands, in 2002, and the Habilitation from Graz University of Technology in 2009. He is currently an Associate Professor at the Signal Processing and Speech Communication Laboratory (SPSC) of Graz University of Technology and head of the Christian Doppler Laboratory for Location-aware Electronic Systems. His research interests are in signal processing for wireless communications, propagation channel modeling, and positioning. Klaus Witrisal served as an associate editor of IEEE Communications Letters, co-chair of the TWG “Indoor” of the COST Action IC1004, cochair of the EWG “Localisation and Tracking” of the COST Action CA15104, leading chair of the IEEE Workshop on Advances in Network Localization and Navigation (ANLN), and TPC (co)-chair of the Workshop on Positioning, Navigation and Communication (WPNC).