On the throughput of cognitive radio MIMO systems assisted with UAV relays
المؤلف | Sboui, Lokman |
المؤلف | Ghazzai, Hakim |
المؤلف | Rezki, Zouheir |
المؤلف | Alouini, Mohamed-Slim |
تاريخ الإتاحة | 2024-10-23T05:10:36Z |
تاريخ النشر | 2017 |
اسم المنشور | 2017 13th International Wireless Communications and Mobile Computing Conference, IWCMC 2017 |
المصدر | Scopus |
الملخص | We analyze the achievable rates of a cognitive radio MIMO system assisted by an unmanned aerial vehicle (UAV) relay. The primary user (PU) and the secondary user (SU) aim to communicate to the closest primary base station (BS) via a multi-access channel through the same UAV relay. The SU message is then forwarded from the primary BS to the secondary network with a certain incentive reward as a part of the cooperation protocol between both networks. We propose a special linear precoding scheme to enable the SU to exploit the PU free eigenmodes. We, also, present the expression of the power maximizing both primary and secondary rates under power budget, relay power, and interference constraints. In the numerical results, we evaluate the PU and SU rates of proposed scheme with respect to various problem parameters. We also highlight the effect of the UAV altitude on the SU and PU rates. Finally, we show that the relay matrix variation affects both rates that reach their peaks at different values of the matrix. |
اللغة | en |
الناشر | Institute of Electrical and Electronics Engineers Inc. |
الموضوع | MIMO space alignment UAV-based communication Underlay cognitive radio |
النوع | Conference |
الصفحات | 939-944 |
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