Spectrum Resource Allocation Method for Covert Transmission of Reconnaissance Information from Multi-UAV
Aiming at spectrum allocation problem of covert information transmission in multiple unmanned aerial vehicles(UAVs)networks,a multi-dimension optimization model in multi-UAV networks covert transmission is constructed for relay selection,spectrum allocation,and block length allocation.The UAV relay selection problem is transformed into a UAV coalition selection problem,and a joint optimiza-tion method for UAV coalition selection and spectrum resources allocation is proposed to maximize infor-mation transmission satisfaction in multi-UAV networks.Due to the fact that the joint optimization of drone alliance selection,spectrum allocation,and block length allocation is a complex NP problem and non-convex problem,we use dimension reduction to divide the problem into two sub-problems:the relay selection of UAVs and the bandwidth allocation and block length allocation of UAVs.The spectrum allo-cation and block length allocation for UAVs are being optimized simultaneously when we optimizing the coalitions selection of UAV by forming a coalition formation game.It is proven that the proposed game is an exact potential game(EPG),that is.,there exists at least one pure strategy Nash equilibrium for the proposed game.Considering that jointly optimizing spectrum allocation and block length allocation is also a complex NP-hard and non-convex problem,we decompose the joint optimization problem into two sub-problems of bandwidth allocation and block length allocation using block coordinate descent method,and optimize these two subproblems using particle swarm optimization algorithm iteratively.The simulation re-sults show that the proposed joint optimization method can effectively improve the satisfaction of informa-tion transmission of multi-UAV networks,while enabling the UAVs to covertly transmit information to the ground control station.
multi-UAVinformation transmissioncovert transmissionspectrum allocationjoint optimiza-tion methodcoalition formation game
NETL
NSTL
万方数据
