determining an identified content for a broadcast to a broadcast group comprising a plurality of devices in a service area;

determining a priority for the identified content for each of the plurality of devices,

determining radio conditions for each of the plurality of devices in the service area; and

determining an available network capacity of a network for broadcasting in the service area;

determining, at a content distribution system, a target spectral efficiency for the broadcast to achieve a performance target for a maximized population coverage across the plurality of devices, said target spectral efficiency based on the priority for the identified content for each of the plurality of devices, the radio conditions, the available network capacity and a modulation scheme and a coding scheme for the broadcast;

broadcasting the identified content to the plurality of devices in the service area based on the target spectral efficiency for the broadcast;

communicating performance feedback data from each of the plurality of devices to a performance module;

adjusting the target spectral efficiency to form an adjusted spectral efficiency based upon the performance feedback data; and

broadcasting the identified content to the plurality of devices based on the adjusted spectral efficiency.