Spectrum Trading in Hybrid RF/FSO Communications: A Stackelberg Game Approach
Spectrum Trading in Hybrid RF/FSO Communications: A Stackelberg Game Approach
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DOI：
10.1109/wcnc45663.2020.9120516
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发表时间：
2020-05
期刊：
影响因子：
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通讯作者：
Shenjie Huang;M. Safari
中科院分区：
文献类型：
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作者：
Shenjie Huang;M. Safari
在这项工作中，混合RF/FSO系统采用博弈论频谱交易过程进行了研究。与文献中的混合系统不同，在所提出的系统中，没有RF频谱被预先分配给FSO链路。只有在FSO链路的可用性严重受损的罕见恶劣天气条件下，源才从周围的RF节点借用一部分许可的RF频谱。考虑了射频节点之间的竞争，采用Stackelberg博弈模型对无线光通信链路源节点和射频节点之间的频谱交易博弈进行了建模。使用租用的频谱，源可以建立一个混合链路，不仅包含原来的FSO链路，但也RF链路，以提高其通过目的地。我们的性能分析表明，该方案显着提高了系统的平均容量在恶劣的天气条件下，从而提高了FSO通信的可用性。
In this work, a hybrid RF/FSO system employing a game theoretic spectrum trading process is investigated. Different from the hybrid systems in the literature, in the proposed system no RF spectrum is preallocated to the FSO link. Only under infrequent adverse weather conditions where the availability of the FSO link is severely impaired, the source borrows a portion of the licensed RF spectrum from the surrounding RF nodes. The competition among RF nodes is considered and the Stackelberg game is employed to model the spectrum trading game between the source of FSO link and the RF nodes. Using the leased spectrum, the source can establish a hybrid link containing not only the original FSO link but also an RF link to improve its throughout to the destination. Our performance analysis demonstrates that the proposed scheme improves the average capacity of the system in adverse weather conditions remarkably, thereby enhancing the availability of FSO communications.