DocumentCode :
1712297
Title :
Radio wave loss deviation and shadow loss at 900 MHz
Author :
Shepherd, Neal H.
Author_Institution :
General Electric Co., Lynchburg, Va.
Volume :
26
fYear :
1976
Firstpage :
63
Lastpage :
66
Abstract :
Radio wave propagation between base and mobile stations is normally described as being Rayleigh distributed due to multipath interference. When the multipath is made up of a limited number of radio waves, the variations in signal amplitude follows a Weibull distribution. The transmission loss deviation has been defined as the dB difference between the 50 and 90% points on the Weibull distribution. Data will be presented showing loss deviation between 3 dB and 30 dB. Shadow loss over hills and around buildings are usually assumed to be knife-edge or rounded knife-edge. Shadow loss based on these assumptions is generally found to be less than the true measured value. Data will be presented comparing calculated shadow loss with measured values.
Keywords :
Antenna measurements; Antennas and propagation; Broadcasting; Data analysis; Dipole antennas; Loss measurement; Propagation losses; Transmitting antennas; Vehicles; Weibull distribution;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 1976. 26th IEEE
Type :
conf
DOI :
10.1109/VTC.1976.1622323
Filename :
1622323
Link To Document :
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