The lecture is going to describe a subsystem concept for the infrastructure portion of a wireless mobile broadband digital transceiver system. The system platform is software based, flexible and capable of processing multiple air interface standards. Choosing the right algorithm partitioning options and data flow considerations, it has been ensured that the platform is ready for the next iteration of the living standard. The same platform is still able to cope with the legacy versions. The complementing development flow ensures appropriately low cycle time for necessary design iterations.