Spacial Diversity / Beam Forming

[davey]

Mike,

Does the Rocket M tx on both ports at the same time? Any info on spacial diversity/beam-forming methods?

Dave

[UBNT-Mike.Ford]

Hey dave,

Yes the device will TX on both ports the same time. As for the beamforming there will be more info on that coming.

Thanks,

Mike

[rkj]

Mike,

Does the Rocket M tx on both ports at the same time? Any info on spacial diversity/beam-forming methods?

Dave

Beamsteering/beamforming would require at least 3 antennas (4 or 8 being a better number to do such thing); Rocket M has only two antennas (2T2R system), and beaforming isn't likely be supported on a $89 device because of IPR issues. (Feel free to prove me wrong, would love that)

But with two antennas it could do SBTC, Space-Time Block Coding, where the 2 transmit chains are used to reach two different single chain receivers.

As UBNT haven't mentioned SBTC, my guess is that today it only does SISO and MIMO, i.e., use both receive antennas for all SISO and MIMO stations, but use only one chain for transmitting to SISO, both chains when transmitting to MIMO stations.

Another interesting development would be a SR71USB card capable of collaborative MIMO, where it can use both chains to uplink. Nano M already has that capability, but notebook users aren't very happy to carry Nano M (even Locos) around with their computers. :roll:

[UBNT-Mike.Ford]

Mike,

Does the Rocket M tx on both ports at the same time? Any info on spacial diversity/beam-forming methods?

Dave

Beamsteering/beamforming would require at least 3 antennas (4 or 8 being a better number to do such thing); Rocket M has only two antennas (2T2R system), and beaforming isn't likely be supported on a $89 device because of IPR issues. (Feel free to prove me wrong, would love that)

But with two antennas it could do SBTC, Space-Time Block Coding, where the 2 transmit chains are used to reach two different single chain receivers.

As UBNT haven't mentioned SBTC, my guess is that today it only does SISO and MIMO, i.e., use both receive antennas for all SISO and MIMO stations, but use only one chain for transmitting to SISO, both chains when transmitting to MIMO stations.

Another interesting development would be a SR71USB card capable of collaborative MIMO, where it can use both chains to uplink. Nano M already has that capability, but notebook users aren't very happy to carry Nano M (even Locos) around with their computers. :roll:

Hello,

I misquoted and mean "More information on our antennas" not beamforming.

Thanks,

Mike

[masked]

Another interesting development would be a SR71USB card capable of collaborative MIMO, where it can use both chains to uplink. Nano M already has that capability, but notebook users aren't very happy to carry Nano M (even Locos) around with their computers. :roll:

Given Mike has said no to including AirMAX into drivers, I'd love to see a USB device capable, something like a PicoStation with a USB-Ethernet interface and two neat clip on antennas. Power consumption may be an issue though...