I need to connect 15 Buildings to 1 building in the middle of them (totally 16 Buildings) by wireless so each of this connections from the central building to the other 15 ones must have at least around 150MB throughput and the area is like a circle with 400m till 500m radius, I think the best wireless solution is PTMP AP at central building and PTP AP at the other 15 buildings, what do you suggest to be the best wireless solution here and what kind of hardware and sectors or antenna should I use here? and I think that I want to have one 6 meter mast at the central building and I need to give service to them through this wireless system, one wireless link connection to each of 15 buildings from the central one and after that I have SW at each building connected to my customers through SFTP cable .
so each of this connections from the central building to the other 15 ones must have at least around 150MB throughput
That’s not going to happen with 802.11A/N/ac PTMP and 15 stations.
In that case, you’d better either create a PTP for each. You’ll need minimum 40MHz for each to exceed 100Mbps, while whole 5GHz spectrum is 160MHz, so this would be quite a challenge to setup and not suitable for novices.
As a bare minimum, use low count PTMP, e.g. one QRT AP each two stations maximum (buildings) provided this is physically feasible, and bearing in mind serving 150Mbps simultaneously to both is not going to happen in real life.
So you could either set your speed goals again with something more achievable; or buldings being so close, lay fiber and leave wireless to serve more distant customers where fiber wouldn’t be a possibility.