5G Multi-Service Field Trials with BF-OFDM

Multi-service transmissions are expected in the upcoming fifth-generation (5G) of cellular networks. These heterogeneous applications lead to many constraints that need to be addressed in a flexible way. We investigate the division of the bandwidth into several subbands, each one having a given physical layer numerology to support a given type of 5G services. This work highlights and demonstrates the possible coexistence of Broadband, Ultra-Reliable Low-Latency and Internet of Things services within the same channel using a flexible waveform. We describe field-test experiments carried out with an implementation of the BF-OFDM (Block-Filtered OFDM) physical layer on custom hardware prototyping boards. Field- trials results confirm the potential of BF-OFDM and the feasibility of the use of mixed numerologies for the next generation of cellular network.