Ericsson has unveiled its fourth generation of Massive MIMO radio/antennas, targeting the unpaired midband spectrum that is the mainstay of early 5G roll-out in most countries. It has made significant strides in the size and power consumption of its units, vying with Huawei in reducing the ‘massive’ element of these 5G units, at least when it comes to tower space and weight, and so lowering cost barriers to widespread operator adoption. And Ericsson was unambivalent in crediting performance and efficiency improvements to the new generation of its inhouse radio silicon, in a pointed riposte to the argument that an open silicon ecosystem could come to the macro 5G market any time soon. The Swedish company is cautious about merchant chips…