Hey all, I'm hoping some of the wireless experts on here can sort out a friendly disagreement I am having with my manager.
In this hypothetical example, we have a Mikrotik wireless AP (RB922UAGS-5HPacD) PtMP running in MIMO, N only. It's using 90 degree directional antennas.
In the scenario, there are two clients. One of the client radios is in the sweet spot on the main lobe. The 2nd client is on a side lobe, outside the 90 degree coverage. However, due to distance or some other factor, both clients have identical signal strengths as reported by the AP and the clients.
signal-strength: -57dBm
signal-strength-ch0: -61dBm
signal-strength-ch1: -60dBm
tx-signal-strength: -58dBm
tx-signal-strength-ch0: -60dBm
tx-signal-strength-ch1: -61dBm
noise-floor: -114dBm
My contention is that signal is signal. Despite being on a side lobe, if the signals are the same, both clients have the same functional bandwidth capacity. Signal determines modulation which determines capacity of the wireless link.
His assertion is that there is less bandwidth "available" through that side lobe because the radiation is weaker.
Any thoughts?