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In this letter, we investigate a UAV-enabled communication system, where aUAV is deployed to communicate with the ground node (GN) in the presence ofmultiple jammers. We aim to maximize the energy efficiency (EE) of the UAV byoptimizing its trajectory, subject to the UAV's mobility constraints. However,the formulated problem is difficult to solve due to the non-convex andfractional form of the objective function. Thus, we propose an iterativealgorithm based on successive convex approximation (SCA) technique andDinkelbach's algorithm to solve it. Numerical results show that the proposedalgorithm can strike a better balance between the throughput and energyconsumption by the optimized trajectory and thus improve the EE significantlyas compared to the benchmark algorithms.

Energy-Efficient Trajectory Design for UAV-Enabled Communication Under Malicious Jamming