mhammett
09-30-2009, 10:45 AM
How does 2.4 MIMO handle foliage? I'm assuming that because the sectors don't provide spatial diversity, they won't provide much benefit.
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UBNT-Mike.Ford
09-30-2009, 10:53 AM
How does 2.4 MIMO handle foliage? I'm assuming that because the sectors don't provide spatial diversity, they won't provide much benefit.
Hello,
This is correct. It will perform the same as roughly any 802.11 2.4Ghz device.
Thanks,
Mike
Hello,
This is correct. It will perform the same as roughly any 802.11 2.4Ghz device.
Thanks,
Mike
Dave-D
09-30-2009, 11:01 AM
Sorry, but you've asked an impossible question.
'Foliage' is a huge variable; the amount of water,
the amount of mass and the occlusion into the
Fresnel zone are the main factors.
I can only guess by 'sectors' you mean the new
dual-polarity MIMO Ubiquiti sectors antennas.
They can provide some help with 'foliage' because
they provide two polarities, and multiple channels.
Of course, if you want spatial diversity, you need
antennas spaced apart. But that's typically a point-
to-point scenario--not a CPE sector strategy. Dave
'Foliage' is a huge variable; the amount of water,
the amount of mass and the occlusion into the
Fresnel zone are the main factors.
I can only guess by 'sectors' you mean the new
dual-polarity MIMO Ubiquiti sectors antennas.
They can provide some help with 'foliage' because
they provide two polarities, and multiple channels.
Of course, if you want spatial diversity, you need
antennas spaced apart. But that's typically a point-
to-point scenario--not a CPE sector strategy. Dave
mhammett
09-30-2009, 11:16 AM
Sorry, but you've asked an impossible question.
'Foliage' is a huge variable; the amount of water,
the amount of mass and the occlusion into the
Fresnel zone are the main factors.
I can only guess by 'sectors' you mean the new
dual-polarity MIMO Ubiquiti sectors antennas.
They can provide some help with 'foliage' because
they provide two polarities, and multiple channels.
Of course, if you want spatial diversity, you need
antennas spaced apart. But that's typically a point-
to-point scenario--not a CPE sector strategy. Dave
I do admit that different types of foliage (coniferous and deciduous) have different impacts on RF performance, with deciduous having the advantage (per results posted to WISPA lists).
That is what I meant by sectors. Given their inexpensiveness compared to the competition, maybe I'll just hook up one of the coax leads from 2 antenna to give me spatial diversity.
Spatial diversity hasn't typically applied to PtMP because it hasn't been an option. Results posted to WISPA lists show that 3.65 MIMO spatial diversity is better at foliage penetration than 900 MHz single polarity.
'Foliage' is a huge variable; the amount of water,
the amount of mass and the occlusion into the
Fresnel zone are the main factors.
I can only guess by 'sectors' you mean the new
dual-polarity MIMO Ubiquiti sectors antennas.
They can provide some help with 'foliage' because
they provide two polarities, and multiple channels.
Of course, if you want spatial diversity, you need
antennas spaced apart. But that's typically a point-
to-point scenario--not a CPE sector strategy. Dave
I do admit that different types of foliage (coniferous and deciduous) have different impacts on RF performance, with deciduous having the advantage (per results posted to WISPA lists).
That is what I meant by sectors. Given their inexpensiveness compared to the competition, maybe I'll just hook up one of the coax leads from 2 antenna to give me spatial diversity.
Spatial diversity hasn't typically applied to PtMP because it hasn't been an option. Results posted to WISPA lists show that 3.65 MIMO spatial diversity is better at foliage penetration than 900 MHz single polarity.
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