Open Access Research Article

Building Entry Loss and Delay Spread Measurements on a Simulated HAP-to-Indoor Link at S-Band

F Perez-Fontan1, V Hovinen2, M Schönhuber3, R Prieto-Cerdeira4, JA Delgado-Penín5, Teschl3, J Kyröläinen2 and P Valtr1*

Author Affiliations

1 Department of Signal Theory and Communications, University of Vigo, Campus Universitario, 36200 Vigo, Spain

2 Centre for Wireless Communications, University of Oulu, 90014 Oulu, Finland

3 Institute of Applied Systems Technology, Joanneum Research, Inffeldgasse 12, 8010 Graz, Austria

4 Wave Interaction and Propagation Section, European Space Research and Technology Centre (ESTEC), Keplerlaan 1, 2201AZ Noordwijk ZH, The Netherlands

5 Departament de Teoria del Senyal i Comunicacions, Universitat Politecnica de Catalunya, c/Jordi Girona, 08034 Barcelona, Spain

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EURASIP Journal on Wireless Communications and Networking 2008, 2008:427352  doi:10.1155/2008/427352

Published: 6 July 2008

Abstract

Results from a measurement campaign emulating the high altitude platform (HAP)-to-indoor communication channel at S-band are presented in this paper. A link was established between a transmitter carried by a helicopter, representing the HAP, and a receiver placed at several locations in different building types including an airport, an office building, a shopping mall, a residential house, and a skyscraper. A wideband, directive channel sounder was used to measure building entry loss and time delay spread. Results of the building entry loss are presented as a function of building type, elevation, and building entry angle. Results of delay spread for each building are also provided.