FB-OFDM: A novel multicarrier scheme for 5G

Abstract

In this paper, a novel multicarrier waveform called filter bank OFDM (FB-OFDM) is proposed for use in 5G. FB-OFDM adopts complex modulation and filtering on subcarrier level. It is compatible to CP-OFDM utilized by LTE and its transceiver can be implemented by simple polyphase filter. Moreover, FB-OFDM system can support asynchrony between subcarriers and choose pulse function adaptively under different scenarios. A pulse function that has good locality in both time and frequency domain is also constructed based on root raised cosine function. Simulation results are provided to validate the performance of FB-OFDM and the proposed pulse function.