Building Entry Loss and Delay Spread Measurements on a Simulated HAP-to-Indoor Link at S-Band
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
EURASIP Journal on Wireless Communications and Networking 2008, 2008:427352 doi:10.1155/2008/427352Published: 6 July 2008
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.