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author:

Hu, J. (Hu, J..) [1] (Scholars:胡锦松) | Zhou, Y. (Zhou, Y..) [2] | Zheng, H. (Zheng, H..) [3] (Scholars:郑海峰) | Chen, Y. (Chen, Y..) [4] (Scholars:陈由甲) | Shu, F. (Shu, F..) [5] | Wang, J. (Wang, J..) [6]

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Abstract:

The development of the extremely large-scale antenna array (ELAA) for the upcoming 6G technology indicates the significance of near-field communication. This work performs a near-field analysis to improve covertness when maximum ratio transmission (MRT) is employed with ELAA to send messages to the legitimate user. Specifically, we first derive the covertness constraint of the system by analyzing the beampattern. Based on this constraint, we introduce the concept of the vulnerable region, which is the region where covert communication is not achievable if a potential warden resides there. Furthermore, determining the vulnerable region involves deriving the range of distances by initially fixing the angle dimension, and then utilizing the covertness and the minimum effective throughput constraints to obtain the range of angle. The simulation results illustrate the efficacy of the determined vulnerable region in both distance and angle dimensions. As the azimuth angle or the distance between the legitimate user and the transmitter decreases, the area of the vulnerable region decreases. Additionally, increasing the number of warden's antennas or requiring a higher signal-to-noise ratio for legitimate user will expand the vulnerable region. IEEE

Keyword:

Antennas Array signal processing Covert communication near-field communication Signal to noise ratio Throughput Transmitting antennas Vectors vulnerable region Wireless communication

Community:

  • [ 1 ] [Hu J.]Fujian Key Laboratory for Intelligent Processing and Wireless Transmission of Media Information, College of Physics and Information Engineering, Fuzhou University, Fuzhou, China
  • [ 2 ] [Zhou Y.]Fujian Key Laboratory for Intelligent Processing and Wireless Transmission of Media Information, College of Physics and Information Engineering, Fuzhou University, Fuzhou, China
  • [ 3 ] [Zheng H.]Fujian Key Laboratory for Intelligent Processing and Wireless Transmission of Media Information, College of Physics and Information Engineering, Fuzhou University, Fuzhou, China
  • [ 4 ] [Chen Y.]Fujian Key Laboratory for Intelligent Processing and Wireless Transmission of Media Information, College of Physics and Information Engineering, Fuzhou University, Fuzhou, China
  • [ 5 ] [Shu F.]School of Electronic and Optical Engineering, NanjingUniversity of Science and Technology, Nanjing, China
  • [ 6 ] [Wang J.]School of Engineering and Digital Arts, University of Kent, Canterbury, U.K

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Source :

IEEE Transactions on Vehicular Technology

ISSN: 0018-9545

Year: 2024

Issue: 12

Volume: 73

Page: 1-6

6 . 1 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

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ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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