I'm not agreeing or disagreeing about this being snake oil... but how do you think phased-array and beam forming work if not by controlling phase delays between antennas so as to create constructive and destructive interference at a desired point, or points, in space?

Even if the air interface works the main reason I can see for carriers not deploying this is backhaul. It would be exponentially more expensive (35x if the air interface is indeed 35x faster) to provide bandwidth to all devices. Right now carriers actually rely on the LTE total cap limitation to save money on backhaul costs.

> how do you think phased-array and beam forming work if not by controlling phase delays between antennas so as to create constructive and destructive interference at a desired point, or points, in space?

I consider DIDO separate from a phased array in that each transmitter has its own separately transmitted signal to do the interfering, instead of one phase-shifted copy of the signal.

Artemis/pCell is definitely not a phased array in that sense.

This could make the backhaul problem even worse- because in order to get that 35x bandwidth , you have to transport ALL that data to a large group of base-stations,unlike today where you transport data only to the relevant base-station.

On the other hand, if a company invented a new wireless technology, it's probably smart enough to be aware of the back haul problem.

I don't know how loosely you want to apply the term "beamforming" but there are ways to send data over multiple antennas for multiple users that allows the signal to be recovered for each user independently even if the signals nominally appear to be interfering.

"Constructive and destructive interference from distributed transmitters" is basically the definition of a sparse phased array... and it suffers from the Thinned Array Curse. Every radio engineer sooner or later re-discovers this classic "curse" :)