Any news about mu-mimo and Mikrotik? Do you plan any routerboards suppporting MU-MIMO? When?
Hopefully MT are busy working on it.
I think the current limitations is the atheros chipsets on existing equipment is not capable of MU-Mimo
mu-mimo is the key for the future other competitor reach real 500 Mb/s@20 MHz 
This is just theory and I’ve never tried it so dont flame me but from reading up on mu mimo I cant help thinking that if you had a 4x4 mimo card and you had a mast with 4x45 degree single polarity sectors and you connected each sector to each mimo output since its built into the 802 standard would it not do the same thing? As far as I read mu mimo is sector diversity in the chains instead of using them in polarity diversity as we generally do with outdoor wireless. So would it work is the question? It seems likely to me.
Cambium has a mu-mimo solution with beamforming up to 7 streams, the AP in not cheap 5K euro and the cpe is around 200 euro, but it seems to works great. My network is 99% mikrotik based and I hope to see soon a similar solutions. I am ready to pay 5K euro per AP if can reuse my mikrotik cpe.
I think that MU-MIMO hype is overrated, you can find lots of information about this on the net, For example:
http://www.networkcomputing.com/wireless-infrastructure/mu-mimo-reality-check/1263574300
Most people think that this will just solve all of their problems, but in fact it will not. Most problems are solved by proper wireless network planning and implementation.
It’s all about reusing the same frequency. So it can make use of frequency slightly more efficient but it’s not a one stop fix for the problems wisps experience. You still need to plan your frequencies. But also the total capacity is shared accross the chains and each user only sees one chain. Where as now most people are bonding chains at the client end.
I am not able to replicate this
http://community.cambiumnetworks.com/t5/PMP-450/PMP450m-500Mbps-Demo/td-p/67561
in my lab with using mikrotik 
How are you trying and what happens?
In lab PtMP with MT AP with 7 clients I can hope to reach a total of 70mb/s maybe 100 mb/s not more
Ahh, Mikrotik is more comparable to the Cambium ePMP 1000, e.g. they both use Qualcomm-Atheros silicon.
The PMP450m uses custom FPGA’s and proprietary beam forming technology, is much more advanced than the commodity chipset based stuff, and is priced as such…
You cannot expect Ferrari performance with a Yugo price 
LOL
Cant compare vs Cambium ePMP 1000/2000 because cambium have TDD 75:25 ratio & this TDMA WORKS for 50 CPE units easy.
Mikrotik TDMA NV2 TDD 50/50 only & max20-30 stations. For new 6.8 MIkrotik NV2 useless , only pure 802.11N can gave 50% wifi real speed.
But soon we can use mikrotik CPE & cambium firmware http://www.cambiumnetworks.com/products/access/epmp-elevate/
I watched the video and it looks pretty impressive. I can’t help thinking though that the secret is more down to the antenna being able to isolate the signals rather than an increase in bandwidth/mhz for mumimo. If you think they have 8x8 mimo with 4 clients each client is getting about the normal rate you would expect from a dedicated dual polarity 2 chain link. The thing that impresses me is that the antenna is able to isolate the signals at such small distance between each other. It’s the same how the new type of satellites work too. Cleaver stuff. But at such short range it’s an amazing antenna.
Many months on and still not available mikrotik CPE & cambium firmware, as always don’t believe product predictions from sales.
Update to 6.40x
You can change the duty cycle on AP Side with:
-nv2-downlink ratio=80 (making all CPE 80% download + 20% Upload)
-nv2-mode=
–Options:
---- dynamic-downlink --fixed-downlink – sync-master and sync-slave..
Works very well, im using 6.40.5
REgards
Which work well ?
“dynamic-downlink”
“fixed-downlink”
“sync-master and sync-slave”
in the 6.41rc there’s a new feature
!) wireless - new driver with initial support for 160 and 80+80 MHz channel width;
and indeed MT will have its first wave2 device, the next gen cAP with IPQ4018 (https://www.qualcomm.com/products/ipq4018) that has mu-mimo support in hw.
the device received FCC approval and it is called cAPG-5HacD2HnD.
so mu-mimo might be not too far away for indoors.
Two years…
And nothing…
wait for Ros 7
lol