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

Author

Crosby, D. ; Abhayawardhana, V.S. ; Wassell, I.J. ; Brown, M.G. ; Sellars, M.P.

Author_Institution

Cambridge Broadband Ltd., UK

Volume

1

fYear

2005

fDate

30 May-1 June 2005

Firstpage

106

Abstract

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.

Keywords

Rician channels; loss measurement; microwave propagation; radio access networks; vegetation; wind; 3.5 GHz; Rician process; average wind speed; excess path loss; foliage; foliated fixed wireless access channel; median K factor; season; temporal characteristics; time variability; Antenna measurements; Antennas and propagation; Base stations; Directive antennas; Frequency measurement; Laboratories; Rician channels; Scattering; Signal processing; Wind speed;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2005. VTC 2005-Spring. 2005 IEEE 61st

ISSN

1550-2252

Print_ISBN

0-7803-8887-9

Type

conf

DOI

10.1109/VETECS.2005.1543259

Filename

1543259