Course Description

Latest Trends in Indoor Radio: Coverage Prediction and Solutions

by Dr. K. Haneda and Prof. V. Degli-Esposti

June 1^st, 2012, from 15:30 till 16:30 at UCL, aud. Barb 00

This seminar is divided into two parts, each covering new trends in indoor radio networks.

Talk 1: Exploitation of laser-scanned room images for radio wave propagation prediction

High-data-rate radio communications are required in many small-cell scenarios for example in a hospital room.  The millimeter-wave radio has a great potential to meet such requirement because of more than 5 GHz bandwidth available.  However, the 60 GHz radio challenges site-specific wave propagation prediction because of very short wavelength that is comparable to or smaller than the roughness of objects in the site.  To tackle this problem, we have acquired accurate room structure models using laser scanning measurements of two rooms in a hospital.  The laser scan was performed densely over the angular domain such that the spatial scan interval is 1 or 5 cm at 3 m distance away from the laser transceiver.  The room structure model consists of a large number of points from which the transmitted laser signal is bounced back.  The model is utilized to simulate 60 GHz radio wave propagation by assuming that there is only a single bounce scattering from each point of the room model.  The simulation first finds normal vectors for surfaces that are composed of a group of points in the room structure model.  Scattering coefficients are then identified for each surface to obtain received field strength at the radio receiver.  Vector field scattering is considered by assuming equally strong coupling between two orthogonal polarization components.  The presentation outlines the acquisition of the room structure models and their exploitation methodologies for the radio wave propagation prediction.  Initial results on the comparison of simulated and measured radio channel statistics are given.

Katsuyuki Haneda received the Doctor of Engineering from the Tokyo Institute of Technology, Tokyo, Japan, in 2007. He has been a post-doctoral researcher at the SMARAD Centre of Excellence in the Aalto University (former Helsinki University of Technology) School of Electrical Engineering, Espoo, Finland, since 2007. He was the recipient of the Student Paper Award presented at the 7th International Symposium on Wireless Personal Multimedia Communications (WPMC ’04). He has been serving as a co-chair of the COST IC1004 working group on indoor radio systems. His current interests are radio wave propagation measurements and modeling, ultrawideband radio, and multipleinput multiple-output systems.

Talk 2 : Indoor radio coverage solutions based on Interleaved DAS MIMO

Distributed Antenna systems (DAS) represent a suitable method of extending multiple-operator radio coverage into indoor premises, tunnels, etc.  With the advent of 4G mobile communications systems and the adoption of Multiple Input - Multiple Output (MIMO) transmission techniques, a common problem for the operators is how to upgrade existing DAS systems to the MIMO technology in a cost-effective way. In this talk novel indoor deployment solutions based on the combination of DAS and MIMO transmission techniques (Interleaved-DAS MIMO) are proposed, and their performance is investigated in realistic cases. General guidelines for the efficient planning of DAS MIMO solutions are also derived.

Vittorio Degli-Esposti received the 'Laurea' degree (with Honours) and the Ph.D. degree in Electronic Engineering from the University of Bologna, Italy, in 1989 and in 1994, respectively. Since November 1994 he has been with the Dipartimento di Elettronica, Informatica e Sistemistica (DEIS) of the University of Bologna, where he is now Associate Professor and teaches courses on Electromagnetics and Radio Propagation. He has been a visiting researcher in 1998 at the Polytechnic University, Brooklyn, New York (USA) where he worked with Professor. H.L. Bertoni, and in 2006 he held a visiting faculty position and taught the course "Deterministic propagation modelling and ray tracing" at the Helsinki University of Technology (TKK), now Aalto University, Finland. He is author or co-author of about 80 peer-reviewed technical papers in the fields of applied electromagnetics, radio propagation and wireless systems. He also serves as reviewer for a number of international journals including several IEEE Transactions. Vittorio Degli-Esposti participated in the European Cooperation Actions COST 231, 259, 273 and 2100, in the European Networks of Excellence NEWCOM and NEWCOM++ and in the European Project ALPHA. He chaired, organized sessions and served in the Technical Program Committees at several International Conferences, including EuCAP'07, EuCAP'09, ISSSTA'08, EuWIT'08. He has been appointed Vice-Chair of EuCAP2010 and EuCAP 2011. He is member of the Radio Propagation Board of EuRAAP

Where?

Aud. Barb 00, place Sainte Barbe 1, Louvain-la-Neuve (square S7 on the map)

Registration

Registration is free but mandatory, on Musics website