Spatial division works regardless of whether the antennas self interfere; it works better when they don't. Overlapping two polarity-isolated qam signals is a go

Spatial division works regardless of whether the antennas self interfere; it works better when they don't. Overlapping two polarity-isolated qam signals is a good way to explain rudimentary spatial multiplexing but the current state of the art is way way beyond that, I'm pleased to say.