广义频分复用(GFDM)具有比正交频分复用(OFDM)更低的峰均功率比(PAPR)和带外频谱泄露。因为本身固有的子载波间干扰(ICI), 传统GFDM解调具有较高复杂度。本文基于导频子载波, 提出一种适用于卫星通信的数据辅助干扰消除GFDM接收算法, 消除了匹配滤波(MF)接收中的子载波干扰, 降低了误符号率(SER)。仿真结果与复杂度分析表明, 本文所提算法优于传统串行干扰消除匹配滤波算法, 有助于促进GFDM在天地一体化通信系统中的应用。

Generalized Frequency-Division Multiplexing(GFDM) has lower Peak to Average Power Ratio(PAPR) and out-of-band than OFDM. However, the traditional GFDM receivers have high complexity due to the intrinsic Inter-Carriers-Interference(ICI). Based on designed pilot subcarriers, a new data-aided Interference Cancellation(IC) GFDM receiver is proposed for satellite communications in this paper. The improved algorithm solves the problem of inter-subcarriers interference in Matched Filtering(MF) receiver and decreases the receiving Symbol Error Rate(SER) obviously. 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.