Massive MIMO has generated an enormous interest due to its many potential benefits in terms of capacity and energy efficiency. However, estimation and sharing of the large amount of channel state information may be a bottleneck for its deployment. In this talk, some ideas of non-coherent massive MIMO schemes will be discussed and a Non-Coherent Massive SIMO System based on M-DPSK and BICM-ID will be presented in the frame of the evolution of mobile communications towards 5G and beyond.