"Advanced Features in Wireless Channel Models: polarization and dense multipath component"

François Quitin, Post-doctoral researcher, ECE, UC Santa Barbara

November 28th (Monday), 11:00am
Harold Frank Hall (HFH), Rm 4164

Geometry-based channel models (GSCMs) are widely used to emulate the wireless propagation channel for evaluation of signal processing algorithms or network performance evaluation. GSCMs model the wireless channel as a sum of individual propagation paths, thereby implicitly recreating the characteristics of the propagation channel like correlation, Doppler shift etc. This talk will focus on two novel key aspects that have been added to GSCMs in recent years: polarization characteristics and dense multipath component (DMC).

The major issue of polarized MIMO system is determining the amount of crosstalk or leakage there is between perpendicular polarizations. It will be explained why simple stochastic models are limited for modeling polarization effects, and why GSCMs are particularly well suited to model polarization systems.

The second novel issue in GSCM is the introduction of the dense multipath component. The DMC is the superposition of a lot of small propagation paths with similar power, which cannot be extracted from measurement with high-resolution algorithms. Ignoring the DMC will cause the diversity of the system to be significantly underestimated. It will be shown how the DMC can be modeled, and how the DMC can be linked to the diffuse component predicted by theoretical electromagnetics and ray-tracing.

About François Quitin:

François Quitin received the Ph.D. degree in Electrical Engineering from the Université Libre de Bruxelles (ULB), Brussels, Belgium and from the Université catholique de Louvain (UCL), Louvain-La-Neuve, Belgium in 2011, and the M.Sc. degree in Electrical Engineering from the ULB in 2007. From October 2007 to September 2011, he worked at the OPERA Department, ULB, as an F.R.S.-F.N.R.S. research fellow. He is currently working as a B.A.E.F. post-doctoral fellow at the Wireless Communications and Sensornets Labs at the University of California, Santa Barbara (UCSB). He is the recipient of the EuCAP 2009 Best Paper Award and is the author of several research papers and communications, and has been actively participating in the European COST 2100 action. His research interests focus on propagation aspects and channel modeling for future wireless systems, as well as exploiting wireless channel properties to improve wireless communication systems.

Hosted by: Professor Upamanyu Madhow, Wireless Communications and Sensornets Lab