In this paper, the channel model of a multicarrier, indoor amplify-and-forward (AF) hybrid power-line communication (PLC) and visible light communication (VLC) channel is demonstrated. Measurements are obtained from different positions between the VLC transmitter and receiver in an indoor testbed with the aid of software-defined radios. Using the obtained measurements, channel models are derived using a semi-hidden Markov model (SHMM) with the aid of a Fritchman channel state representation model. The Baum-Welch algorithm is then used to re-estimate and validate the derived models. Results presented show the error-free run distribution in the hybrid channel and the probability of error from the obtained measurements. The re-estimated probability of error (${\overline{P}}_e$) of each measured indoor scenario is also seen to match the corresponding measured $P_e$, showing the validity of the derived SHMM models.

本文介绍了多载波，室内放大转发（AF）混合电力线通信（PLC）和可见光通信（VLC）信道的信道模型。在室内测试台中，借助软件定义的无线电，可以从VLC发射器和接收器之间的不同位置获得测量值。使用获得的测量值，借助Fritchman通道状态表示模型，使用半隐式马尔可夫模型（SHMM）导出通道模型。然后使用Baum-Welch算法重新估计和验证导出的模型。给出的结果显示了混合通道中的无误差运行分布以及从获得的测量结果中得出误差的可能性。重新估算的错误概率（${\overline{P}}_{Ë}$）的每个室内场景也被视为与相应的室内场景相匹配 $P_{Ë}$，显示了导出的SHMM模型的有效性。