The number of connected devices is expected to exceed the number of humans by far. The density of wireless devices and the associated communication flows sharing the same space-time will require a smart and agile use of frequency resources. The development of a flexible, low cost and low power disruptive transmitter architecture is proposed. It uses a differentiating coding scheme, which leverages a mathematical and technological reduction of the energy cost of information transit. The design of an RF-DAC suited to this architecture is presented and its performances are assessed toward 5G. It addresses carrier aggregation purposes in the sub-6 GHz range, as well as IoT perspectives.