Abstract
This paper studies the trade-off between the comunication capacity of unmanned aerial vehicle (UAV) and the UAV's unintentional interference in a shared spectrum scenario. In fact, UAV will also cause unintentional interference to other ground users (GUs) who do not communicate with the UAV while transmitting data to a specific ground node (GN). And the location of these GUs is usually unknown. For this problem, we introduce the concept of unacceptable area in which the interference power received by GUs from UAV exceeds their anti-jamming tolerance, and study the trade-off between UAV's average communication capacity and average unacceptable area by joint UAV's 3D trajectory and transmit power optimization. Further, we propose an effective iterative algorithm to solve this non-convex problem by using successive convex approximation (SCA) and block coordinate descent (BCD) method. Numerical results show the proposed scheme can meet the communication requirements of UAV and reduce the UAV's unintentional interference at the same time.
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