Time variability of the foliated fixed wireless access channel at 3.5 GHz

• Published in: 2005 IEEE 61st Vehicular Technology Conference Vol. 1; pp. 106 - 110 Vol. 1
• Main Authors: Crosby, D., Abhayawardhana, V.S., Wassell, I.J., Brown, M.G., Sellars, M.P.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 2005
• Subjects: Antenna measurements; Antennas and propagation; Base stations; Directive antennas; Frequency measurement; Laboratories; Rician channels; Scattering; Signal processing; Wind speed
• ISBN: 9780780388871; 0780388879
• ISSN: 1550-2252
• DOI: 10.1109/VETECS.2005.1543259

This paper examines the temporal characteristics of the fixed wireless access channel resulting from the combined effects of foliage and wind. Measurements at a frequency of 3.5 GHz taken over the course of one year are presented. The temporal variability of the path loss is shown to be well approximated by a Rician process. The dependency of the median K factor on excess path loss, average wind speed and season is investigated. An empirical expression for the median K factor encompassing these variables is presented. The median K factor is found to be approximately inversely proportional to average wind speed.