Optimum hop length for millimetre wave radio links in an aridclimate
Ali, A.A.
Microwaves, Antennas and Propagation, IEE Proceedings -
Volume 142, Issue 2, Apr 1995 Page(s):156 - 162
Digital Object Identifier
Summary:Reliability analysis of millimetre-wave radio links operating in
an arid climate are presented and used to derive hop length against fade
margin charts. Long-term rain and visibility data for Saudi Arabia are
used to determine rain and visibility statistics for various regions of
the country. Based on the results of measured attenuation at 40 GHz in
Riyadh, meteorological statistics are converted into excess attenuation
due to rain, sandstorms and multipath fading. Finally, the total outage
time due to the three phenomena is depicted as a function of fade margin
at various hop lengths. The results are a set of design charts which
relate hop lengths, reliability objectives and fade margins for various
meteorological regions of Saudi Arabia. The charts are given for
frequencies of 30, 40, 50, 60 and 70 GHz
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