Title :
Cellular telecommunications: estimating shadowing effects using wedge diffraction
Author :
Lopez, Alfred R.
Author_Institution :
GEC-Marconi Hazeltime, Greenlawn, NY, USA
fDate :
2/1/1998 12:00:00 AM
Abstract :
Knife-edge diffraction has been used to estimate the effects of blocking obstacles and terrain for cellular telecommunications. Wedge diffraction is more appropriate in many cases. This paper presents simple formulas that quantify the effects of shadowing caused by rising terrain using wedge diffraction. The shadowing effect is directly related to the typical cellular-telecommunications case, where an inverse fourth-power relationship of received power with distance is characteristic
Keywords :
cellular radio; electromagnetic wave diffraction; radiowave propagation; blocking obstacles; cellular telecommunications; distance; inverse fourth-power relationship; knife-edge diffraction; received power; shadowing effects; terrain; wedge diffraction; Antennas and propagation; Base stations; Diffraction; Equations; Geometry; Land mobile radio cellular systems; Postal services; Shadow mapping; Transmitters; Transmitting antennas;
Journal_Title :
Antennas and Propagation Magazine, IEEE
