A Data-aided Interference Cancellation GFDM Receiver for Hybrid Satellite-Terrestrial Communication Systems

Abstract

In order to meet the critical 5G requirements both in terms of global connectivity and large throughput, satellite communications provide a valuable solution to complement and extend terrestrial mobile communications. Considering physical layer transmission waveform integration in hybrid Satellite-Terrestrial (S-T) communication systems, generalized frequency division multiplexing (GFDM) technology is introduced to apply in satellite communications. As potential candidate waveform of 5G, GFDM has many advantages which is appropriate for S-T communications but the traditional GFDM receivers have high complexity due to its intrinsic inter-carriers-interference (ICI). In this paper, a new data-aided interference cancellation (IC) GFDM receiver is proposed for satellite communications. Based on pilot subcarriers and new match filter, the proposed scheme can solve the receiving problem of raised cosine (RC) filtering GFDM. The simulation results and the complexity analysis prove that the proposed GFDM receiver performed significantly better than traditional GFDM receiver at reasonable computational cost, which can promote the application of GFDM in hybrid S-T communication systems.