With the rapid development of wireless communications, the signals may be transmitted in different media, such as visible light and millimeter-wave along the communication path. In this case, there will be different devices working in different media, which cannot directly communicate to each other. For alleviating this problem, we first conceive a cross-media communication scenario where two devices for different media could communicate with the aid of a relay working in both media. Furthermore, we derive the average outage probability of the uplink and downlink communications. Finally, aiming at minimizing the derived average outage probability, the optimal power allocation (PA) scheme at the relay side is also derived and verified by simulation results.

中文翻译：

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具有解码转发中继和最佳功率分配的跨媒体通信

随着无线通信的飞速发展，信号在通信路径上可能以可见光、毫米波等不同介质进行传输。在这种情况下，将有不同的设备工作在不同的媒体上，无法直接相互通信。为了缓解这个问题，我们首先设想了一个跨媒体通信场景，其中两个不同媒体的设备可以借助在两种媒体中工作的中继进行通信。此外，我们推导出上行链路和下行链路通信的平均中断概率。最后，以导出的平均停电概率最小为目标，推导出中继侧的最优功率分配（PA）方案，并通过仿真结果进行验证。