This paper investigates the physical layer security issue in an unmanned aerial vehicle (UAV) aided cognitive radio network. Specially. a UAV operates as an aerial secondary transmitter to serve a ground secondary receiver (SR) by sharing the licensed wireless spectrum assigned to primary terrestrial communication networks. and in the meantime multiple eavesdroppers (Eves) try to wire... https://www.hollandscountryclothinges.shop/product-category/gloves/
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