LTE and HSDPA (and maybe older gens) have Channel Quality Indicator, which afaik has the same role as CSI. So I wonder if the same trick can be achieved with LT

LTE and HSDPA (and maybe older gens) have Channel Quality Indicator, which afaik has the same role as CSI. So I wonder if the same trick can be achieved with LTE signalling? To pull that off you would need access to a BTS, but today with open source stacks, like OpenBTS or OpenAirInterface,you could roll out your own.