Title :
Propagation over a parabolic valley: Model comparison to data
Author :
Chizhik, Dmitry ; Drabeck, Larry ; MacDonald, W. Michael
Author_Institution :
Bell Labs., Alcatel-Lucent, NJ, USA
Abstract :
Performance of long range terrestrial wireless communication is critically affected by terrain variation. Of particular interest is the case of a transmitter (base station) placed above clutter, while the mobile receiver is immersed in clutter. Recently published analytical results provided compact asymptotic expressions for pathloss for clutter-covered parabolic terrain, both for valleys and ridges. In both cases, ray-optical term dominated for short ranges, while a single mode dominated at large ranges. Strong focusing was found to occur in valleys. In this work, analytical predictions are compared to measurements collected across a deep valley formed by the Columbia River in Oregon. In comparison to measured power across a valley, mean errors of less than 1 dB were found, a marked improvement over standard terrain-unaware models that produce a mean error of 30 dB.
Keywords :
Base stations; Equations; Optical scattering; Optical surface waves; Power measurement; Predictive models; Radio transmitters; Rivers; USA Councils; Wireless communication; Propagation; terrain factors;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4