Flexible 5G below 6GHz Mobile Broadband Radio Air Interface

In November 2015 the latest world radio conference took place and as a result the below 6 GHz RF bands have become more important for 5G in the foreseeable future. In the 5GPPP project Fantastic5G options for higher spectral efficiency based on massive MIMO, joint transmission cooperative multi point and interference mitigation are being investigated. Most of these concepts have been already developed in previous projects like Artist4G or METIS, but now it is important to integrate these into a flexible framework supporting a rudimentary phase I as well as a future proof phase II system. Interference mitigation might become the main differentiator to LTE and the inevitable enablers will be shortly highlighted. According to current results the novel 5G system has the potential to increase spectral efficiency by roughly a factor of ten compared to a 4x2 LTE system, thereby significantly outperforming also latest LTE results for full dimension MIMO.