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Impact Factor:8.9
Affiliation of Author(s):School of Computer Science and Information Engineering, Hefei University of Technology
Journal:IEEE Transactions on Wireless Communications
Funded by:the National Natural Science Foundation of China under Grant 61971176
Key Words:Physical-layer security, virtual antenna array, D2D multicast communication, beamforming
Abstract:This paper investigates the physical-layer security in a Virtual Antenna Array (VAA)-aided Device-to-Device Multicast (D2DM) communication system, where the User Equipments (UEs) who cache the common content will form a VAA system and cooperatively multicast the content to UEs who desire it. Specifically, with the target of securing the VAA-aided D2DM communication under the threat of multiple eavesdroppers, we propose a secure beamforming scheme by jointly considering the formed VAA and the Base Station (BS). For obtaining the optimal beamforing vectors, a nonsmooth and nonconvex Weight Sum Rate Maximization Problem (WRMP) is formulated and solved using Successive Convex Approximation (SCA) approach. Furthermore, we consider the worst case that eavesdroppers cooperatively form a eavesdrop VAA to enhance the overhearing capacity. In the worst case, we modify the securing beamforming scheme, formulate the corresponding WRMP and solve it using a two-level optimization. Simulation results validate the improvements of the VAA-aided D2DM scheme in terms of communication security compared with conventional D2DM schemes.
Co-author:Yibo Yi,Kun Li,Hongwei Zhang
First Author:Xinyue Hu
Indexed by:Journal paper
Correspondence Author:Caihong Kai
Discipline:Engineering
Document Type:J
Volume:22
Issue:7
Page Number:4814 - 4827
ISSN No.:1558-2248
Translation or Not:no
Date of Publication:2022-12-20
Included Journals:SCI、EI