LightRadio will actually change the way base stations look. Currently the defacto design for base stations is to have antennas on poles, connected with waveguides to the radio subsystem (which is happens to be as big as refrigerators). LightRadio leverages the advanced chip technology such that much of the radio functionality is miniaturized and included in the antenna chassis.
I don't think it is. This has been discussed at antenna-theory.com:
The idea of adaptive antennas (or smart antennas) has been around for quite a while. Arraycomm already does it. I'm highly skeptical they will be able to properly track users to enable the proper spatial diversity gains.