Sun, 27 Jul 2008 07:50:18 BST CiteULike: dcastro's Seidel http://www.citeulike.org/user/dcastro/author/Seidel CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/2648094 <i>Vehicular Technology, IEEE Transactions on, Vol. 39, No. 2. (1990), pp. 132-139.</i><br /><br />The results of multipath power delay profile measurements of 900-MHz mobile radio channels in Washington, DC, Greenbelt, MD, Oakland, CA, and San Francisco, CA, are presented. The measurements have focused on acquiring worst-case profiles for typical operating locations. The data reveal that at over 98% of the measured locations, root mean square (RMS) delay spreads are less than 12 μs. Urban areas typically have RMS delay spreads on the order of 2-3 μs and continuous multipath power out to excess delays of 5 μs. In hilly residential areas and in open areas within a city, RMS delay spreads are slightly larger, typically having values of 5-7 μs. In very rare instances, reflections from city skylines and mountains can cause RMS delay spreads in excess of 20 μs. The worst-case profiles show resolvable diffuse multipath components at excess delays of 100 μs and amplitudes 18 dB below that of the first arriving signal 900-MHz multipath propagation measurements for US digital cellular radiotelephone TS Rappaport SY Seidel R Singh doi:10.1109/25.54229 Vehicular Technology, IEEE Transactions on, Vol. 39, No. 2. (1990), pp. 132-139. 2008-04-10T06:20:47-00:00 1990 Vehicular Technology, IEEE Transactions on 39 2 132 139 digital measurement mobile multipath propagation http://www.citeulike.org/user/dcastro/article/1841100 <i>Vehicular Technology, IEEE Transactions on, Vol. 40, No. 4. (1991), pp. 721-730.</i><br /><br />The authors present typical and worst-case root mean square (RMS) delay spreads and excess delay spreads (10 dB) and mean channel path loss at 900 MHz in four European cities using typical cellular and microcellular antenna locations. Several thousand power delay profile measurements were made at six typical cellular and microcellular base station locations in the four cities. The data were obtained at local worst-case time-dispersion locations over hundreds of kilometers of typical operating routes, such as highways, bridges, and city streets, and form the basis for statistical models which can be used to predict the percentage of locations or the percentage of time in which channels will possess particular values of RMS delay spread and excess delay spread. The effect of reference distance on wideband path loss and the propagation path loss laws for cellular and microcellular radio channels are given. Radar cross sections computed from the data for typical scatterers in cellular and microcellular radio channels are given Path loss, scattering and multipath delay statistics in four European cities for digital cellular and microcellular radiotelephone SY Seidel TS Rappaport S Jain ML Lord R Singh Vehicular Technology, IEEE Transactions on, Vol. 40, No. 4. (1991), pp. 721-730. 2007-10-30T14:59:22-00:00 1991 Vehicular Technology, IEEE Transactions on 40 4 721 730 delay inserted-bib mobile multipath statistical urban