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 -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/