The presented paper, investigates a dual hop hybrid radio frequency-visible light communication (RF-VLC) system with wireless energy harvesting at the relay. The information signal is transmitted via RF channel from the source $\left(S\right)$ (located at some distant location) towards the destination $\left(D\right)$. We assumed that there is no direct connectivity between $S$ and $D$, thus a decode and forward relay $\left(R\right)$ is used as an intermediate node between $S$ and $D$. The source transmits the information signal towards the relay via RF channel. The received information signal at the relay is processed and converted into corresponding optical signal. The optical information signal is then forwarded to the destination. Parallelly, the relay employs the power splitting relaying (PSR) protocol with harvest-then cooperate (HTC) protocol for energy harvesting. The harvested energy is utilized to forward the optical information signal from relay to the user at the destination located inside a building’s room via VLC channel. We assumed that the RF and the VLC channels are modelled by generalized-$K$ fading distribution and lambertian emission model respectively. The statistical characteristics are derived for the instantaneous signal to noise ratio of the individual channels using PSR protocol. Further, these statistics are used to derive the accurate closed form expressions for end to end outage probability and average bit error rate. Moreover, with the help of numerical results, end to end performance of the hybrid RF-VLC system under the influence of various system parameters such as shadowing parameters, power splitting factor, field of view angle of the detector and the distance between the source and the relay is analysed and verified.

本文研究了一种双跳混合射频-可见光通信 (RF-VLC) 系统，该系统在中继处具有无线能量收集功能。信息信号通过射频信道从源头传输$\left(\mathrm{小号}\right)$（位于某个遥远的位置）朝向目的地$\left(D\right)$. 我们假设之间没有直接连接$\mathrm{小号}$和$D$，因此是解码和转发中继$\left(R\right)$用作之间的中间节点$\mathrm{小号}$和$D$. 源通过射频信道向中继发送信息信号。在中继处接收到的信息信号被处理并转换成相应的光信号。然后将光信息信号转发到目的地。同时，继电器采用功率分离中继 (PSR) 协议和收获-然后协作 (HTC) 协议进行能量收集。收集到的能量用于通过 VLC 通道将来自中继的光信息信号转发到位于建筑物房间内的目的地的用户。我们假设 RF 和 VLC 信道是由广义建模的$ķ$分别是衰落分布和朗伯发射模型。使用 PSR 协议导出各个通道的瞬时信噪比的统计特性。此外，这些统计数据用于推导出端到端中断概率和平均误码率的准确封闭形式表达式。此外，在数值结果的帮助下，混合RF-VLC系统的端到端性能在各种系统参数的影响下，如阴影参数、功率分裂因子、探测器的视场角和源与源之间的距离。对继电器进行分析和验证。