Title :
The effect of rain attenuation on orthogonally polarized LMDS systems in tropical rain regions
Author :
Fong, B. ; Rapajic, P.B. ; Hong, G.Y. ; Fong, A.C.M.
Author_Institution :
Fac. of Eng., Auckland Univ. of Technol., New Zealand
fDate :
6/25/1905 12:00:00 AM
Abstract :
The effect of rainfall is to reduce the link reliability of local multipoint distribution service (LMDS) systems. We study the effects of rain attenuation on the microwave channel in two heavy rainfall tropical cites in Asia for wideband signals using a line-of-sight LMDS link with orthogonal polarizations. This is performed by transmitting signals with horizontal and vertical polarizations with carrier frequencies commonly used in LMDS systems. It is noted that the effect of depolarization due to rain is minimal at around 10 GHz; it is also observed that the rainfall rate has little effect on the difference in attenuation with different polarizations.
Keywords :
electromagnetic wave absorption; electromagnetic wave polarisation; electromagnetic wave scattering; microwave links; microwave propagation; millimetre wave propagation; multicast communication; rain; tropospheric electromagnetic wave propagation; 10.5 to 39.5 GHz; Asia; LMDS systems; depolarization; horizontal polarization; line-of-sight link; link reliability; local multipoint distribution service; microwave channel; multicast distribution; orthogonal polarizations; rain attenuation; tropical rain regions; vertical polarization; wideband signals; Antenna measurements; Asia; Attenuation measurement; Availability; Bit error rate; Frequency measurement; Performance evaluation; Polarization; Rain; Wideband;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2003.811326
