Thu, 07 Aug 2008 21:51:59 BST CiteULike: dcastro's library [2029 articles] http://www.citeulike.org/user/dcastro/article/2648094 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