Abstract
Intensity-modulation and direct-detection (IM/DD) orthogonal frequency division multiplexing (OFDM) systems have gained great attentions from researchers. However, the interaction between the chirp of direct modulation laser and fiber dispersion causes intermixing interferences among sub-carriers. Therefore, in this paper, we adopt Volterra filter to reduce the intermixing interferences and improve the BER performance in IM/DD OFDM systems. We first introduce the basic concept of Volterra filter and then set up simulation systems. The simulation results show that the system has a good BER performance by using a Volterra filter. This research provides a theoretical guidance for the information transmission in power grid.
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