宽带信道下基于PDKEEPAAA的GFDM快速接收机
Fast DGT Based Receivers for GFDM in Broadband Channels
摘要:
广义频分复用(GFDM)是最近的多载波5G波形候选,具有脉冲成形滤波器的灵活性。然而,选择脉冲成形滤波器的灵活性可能导致载波间干扰(ICI)和符号间干扰(ISI),这在宽带信道中变得更加严重。为了消除码间干扰和子载波间干扰,本文基于离散Gabor变换(DGT),首先将发射端GFDM信号作为逆DGT(IDGT)处理,然后利用频域DGT恢复(作为接收端)GFDM信号。此外,为了降低复杂度,一个次优的频域DGT称为本地DGT(LDGT)的发展。对提出的基于DGT的接收机进行了分析。
英文摘要:
Generalized frequency division multiplexing (GFDM) is a recent multicarrier 5G waveform candidate with flexibility of pulse shaping filters. However, the flexibility of choosing a pulse shaping filter may result in inter carrier interference (ICI) and inter symbol interference (ISI), which becomes more severe in a broadband channel. In order to eliminate the ISI and ICI, based on discrete Gabor transform (DGT), in this paper, a transmit GFDM signal is first treated as an inverse DGT (IDGT), and then a frequency-domain DGT is formulated to recover (as a receiver) the GFDM signal. Furthermore, to reduce the complexity, a suboptimal frequency-domain DGT called local DGT (LDGT) is developed. Some analyses are also given for the proposed DGT based receivers.
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