I also think so[quote=“rvereza, post:40, topic:12449”]
The key here is multipath.
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I also think so.
And multipath comes from a rich AoA not from a high AoD.
That is to say TX antenna selection does not help much but RX antenna selection helps a lot.
Do you get any rulebook to get sweet point? Or it was just trial and error opt?
Frankly speaking hit and trial.
Keep eagle eyes on counter vs person movement in field.
That’s true.
I would like to know how other vendors showcase throughput in NR is there any fix criteria.
Did they get 1 GBps above in 1 click?
Huawei has a different scenario.
They calculate where to place UE antenna fo DUT.
And then you get 4 layers for sure.
Huawei has a doc about this and they place antenna in different beams in max sinr.
Customer is asking to get more than 2 Gbps cell tput for NR.
I think it’s for mMIMO we have similar angle calculation and doc given.
This is for CPE with external antenna.
Let’s say 2 ssb there, then with total beamwidth 120 how they decide.
Huawei has 8 SSB per sector not 2 SSB.
And there is way to calculate locations of external antennas for each one to be in a different beam with max sinr on each beam so to get MCS 27.
Ok they are using max limit for fr1.
Many vendors use 1 or 2 SSB only.
I do not understand what is the reason why they don’t use 8 and use only 1.
What can be motivation for this?
I think also Nokia uses 1.
Baseband processing and complications for beamforming.
Samsung uses 1 for DSS.
For DSS I can understand, but for normal case?
So it is not out of will, is it limitation for them?
I think so otherwise they would use 8 with higher gain each.
Any other opinion?
No. I already ask this question other experts.
Remember we need ecpri interface with sfp as well between bbu and RU that increase with increased ssb beam so more cost overhead.
I am not aware of this.
How eCPRI bandwith requirement increases with increase in SSB beam?