Operators are desperate for new spectrum as capacity demands mushroom, but certainly cannot afford to pay traditional prices for their entire store. This is bringing new options into play, including unlicensed and shared bands, and as capacity takes over from coverage as the primary driver of LTE expansion, higher frequencies are also in the limelight. That is raising the profile of the unpaired spectrum bands around 2.3 GHz-2.6 GHz and 3.5 GHz, whose last day in the sun was during the WiMAX bubble a decade ago. Several regulators and operators are paying close attention to reviving these bands, some of which are lying fallow or being used for legacy fixed wireless services. While 2.5/2.6 GHz is a major band for…