At 9/25/2011 02:23 PM, Robert Canary wrote:
>Keeping a link active versus maintaining throughput under divers
>conditions is two different things. For the money paid I would go
>with something like Alvarion. But then again, after 12 years, I
>would not invest big dollars in CPE or Access points. Only in the
>backhauls and infrastructures.
>
>The only reason I have not went UBNT, I have found much feed back on
>how they deal with interference, I like Frequency Hopper (FH) they
>keep a decent link through the most divers environments. But how
>does UBNT deal with interference?
UBNT uses chips that are essentially software-defined radios. They
implement the 802.11 G, A and N modulation. G and A are a fairly
simple OFDM. -N is an OFDM with MIMO capability and some additional
features. FH and DS are both older spread spectrum techniques; OFDM
is wideband, but not really spread spectrum.
The N specs in particular (which work on both 2.4 and 5 GHz bands)
include a lot of modulation options ("MCS"). So you can select the
modulation that works best on the link in question, and choose 5, 10,
20 or 40 MHz channels.
--
Fred Goldstein k1io fgoldstein "at" ionary.com
ionary Consulting http://www.ionary.com/
+1 617 795 2701
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