MIMO in hig vegetation areas

[wirelessrudy]

Any body already have any experience in the use of MIMO in areas with lots of trees (and/or buildings)?

I want to set-up an coverage of an estate in a forest area. Hoping mimo could be the answer. (Trees kill the 5Ghz while 2,4Ghz might have more penetration but also sees more interferences from private 2.4Ghz devices.

Before I throw myself into high investment for a MIMO out roll (BOTH AP and Client need to have the ´n´ antenna configuration!) I would like to hear some success stories...

R.

[UBNT-Mike.Ford]

Hello,

The Mimo (directed beam) does not penetrate foliage that well, just like regular 802.11/a/b/g

Thanks,

Mike

[wispwest]

short distances with 5.8Ghz have been known to work fine through tree's. Long distances, especially forest, better plan on using 900Mhz. It will kick 2.4 and 5.8 out the door. Only loss is throughput, though I haven't tried the XR9 in 54Mbps yet. If you want reliability, go with 900 and sacrifice the 300Mbps MIMO speed (how much internet speed do you have anyway).

[wirelessrudy]

Well, 900Mhz is licensed freq. for cellular. So playground for the ´big´ boys.... no way I can afford that freq. here in Europe.

5Ghz ´known to go with trees at short distance?´ I noticed trees are a killer for 5Ghz at medium to long distances, not tried at short distance though.
May be its worth a try. And yes, 3Mb is what my clients get, so with a bit of overhead and reserve anything in the 6-9-12Mb range works for me...
All I am looking for is basically the best system to the interferences from own and other signals down. Since ´n´ actually makes use of that it looks promising....


R.

[wispwest]

if 5.8 doesn't cut it try a high-power 2.4ghz and horizontal polarize your antennas so the noise from wireless routers doesn't interfere as much...

900 is a licensed freq where you are? sounds bizarre

[wirelessrudy]

Never answered this one but:

In Europe 900Mhz is reserved for G3 networks.
Alternatively 700Mhz might do the job in the future. In present it still has UHf (analogue) TV but when that dies it comes available. It is still to be decided if this is going to be free of to be ´taken´ by the big providers for LTE or Wimax.

700Mhz would give the ultimate solucion for forest areas though...

R.

[bluestu]

The 900 Mhz band is licensed in Europe, Asia, Africa and Australia. Its used by over 300 GSM networks. the lowest frequency we can play with in Europe is 2.4 GHz with a MAX EIRP of 100 mw / 20 dBm.