Member
opampca
Posts: 229
Registered: ‎04-16-2008
Posts: 229
Kudos: 1
Registered: 04-16-2008

Multiple radios in MIMO 2x2

How many Rocket Dish can I install on a tower without having interference between them ?
I need to have many PtP on a tower, along with 2 or 3 120 degrees AP for local CPE.
Thank you,
Richard
Previous Employee
UBNT-Mike.Ford
Posts: 9,171
Registered: ‎08-17-2007
Posts: 9171
Kudos: 13
Registered: 08-17-2007

Re: Multiple radios in MIMO 2x2

How many Rocket Dish can I install on a tower without having interference between them ?
I need to have many PtP on a tower, along with 2 or 3 120 degrees AP for local CPE.
Thank you,
Richard



Hello,
What channel size are you using?
Thanks,
Member
opampca
Posts: 229
Registered: ‎04-16-2008
Posts: 229
Kudos: 1
Registered: 04-16-2008

Re: Multiple radios in MIMO 2x2

Well I did not setup anything yet, but I suspect there would be various since the PtP are going to different places.
I would guess most of them 10Mhz or 20Mhz, but I have a backbone link in there I want the fastest, since there will be another up to another tower doing the same.
Previous Employee
UBNT-Mike.Ford
Posts: 9,171
Registered: ‎08-17-2007
Posts: 9171
Kudos: 13
Registered: 08-17-2007

Re: Multiple radios in MIMO 2x2

Well I did not setup anything yet, but I suspect there would be various since the PtP are going to different places.
I would guess most of them 10Mhz or 20Mhz, but I have a backbone link in there I want the fastest, since there will be another up to another tower doing the same.


Well It comes down to your channel size and channel planning at that point.
Also is this in the US frequency band?
Member
opampca
Posts: 229
Registered: ‎04-16-2008
Posts: 229
Kudos: 1
Registered: 04-16-2008

Re: Multiple radios in MIMO 2x2

Asked differently:
What is the bandwidth needed for a 2x2 mimo ?
If I use 20mhz channels, will it use 2x 20mhz ?
I am in Canada, allocation is the same as FCC, I suppose.
Thank you
Richard
Regular Member
yeow
Posts: 352
Registered: ‎03-18-2008
Posts: 352
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Registered: 03-18-2008

Re: Multiple radios in MIMO 2x2

2 by 2 (2x2) MIMO means 2 Tx 2 Rx (spatial multiplexing for 2 data streams). This has nothing to do with channel bandwidth.

You can configure as
2x2 MIMO 40MHz - 300Mbps
2x2 MIMO 20MHz - 130Mbps