Resource Allocation for Secure Information Transmission in UAV-based Cooperative Networks

Document Type : Original Article

Authors

M.Sc. Student, Department of Electrical and Computer Engineering, Shahrood University of Technology, Shahrood. Iran.

Abstract

In this paper we propose a new resource allocation framework for unmanned aerial vehicle (UAV)-based cooperative networks. In the considered network, three node exist: one transmitter and two receivers. In addition, we assume that a UAV is used in the network as a decode-and-forward (DF) relay. For the channel model, we only consider the path-loss. We assume that the information transmission is performed only when a line-of-sight (LoS) connection could be established between communicating parties. The UAV moves from the transmitter towards the receivers. UAV receives the information from the transmitter, and when it approaches to the receivers, it simultaneously transmits information intended for both the receivers using non-orthogonal multiple access (NOMA) technique. The resulting optimization problem is non-convex and hard to solve. To tackle the problem, we adopt the successive convex approximation (SCA) technique where the original problem is approximated by a convex problem which could be solved easily using existing optimization tools like CVX. Finally, the proposed framework is evaluated using simulation for different network parameters. Simulation results confirm the efficiency of the proposed scheme.

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References

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History

  • Receive Date: 04 February 2019
  • Revise Date: 17 February 2019
  • Accept Date: 02 March 2019
  • First Publish Date: 02 March 2019

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