car-to-car communications, UFMC is considered as the best
choice, when FBMC is good for longer sequences, and OFDM
is considered as inefficient due to the cyclic prefix. [40] though
suggests FBMC as a candidate for 5G. Due to its property of
self-equalization, which can reduce the number of subcarriers
required by the system, and to its blind channel tracking
property to can be used to address pilot contamination, which
is one of the main limiting factors of Massive MIMO systems.
GFDM is an adaptation of OFDM as a non-orthogonal multi
carrier scheme with flexible pulse shaping [41]. This flexibility
implies self-created interference which is dealt with using
some receiver methods and iterative interference cancellation