Multi-user directional modulation with reconfigurable holographic surfaces

Large intelligent surfaces arise as an emerging technology and critical building block for sixth-generation (6G) wireless networks. Reconfigurable holographic surfaces (RHSs) have been attracting significant attention recently as active antenna arrays with the capability of forming narrow beams at l...

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Bibliographic Details
Published in:EURASIP journal on wireless communications and networking 2024-07, Vol.2024 (1), p.53-18, Article 53
Main Authors: Yağan, M. Yaser, Keşir, Samed, Hökelek, İbrahim, Pusane, Ali E., Görçin, Ali
Format: Article
Language:English
Subjects:
Algorithms
Antenna arrays
Antennas
Arrays
Carrier waves
Communications Engineering
Directional modulation
Engineering
Holographic beamforming
Holographic MIMO Systems and Applications
Holography
Information Systems Applications (incl.Internet)
Low cost
Modulation
Networks
Radiation
Reconfigurable holographic surface
Reconfiguration
Signal processing
Signal,Image and Speech Processing
User services
Wireless communications
Wireless networks
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Summary:Large intelligent surfaces arise as an emerging technology and critical building block for sixth-generation (6G) wireless networks. Reconfigurable holographic surfaces (RHSs) have been attracting significant attention recently as active antenna arrays with the capability of forming narrow beams at low cost and complexity. This paper introduces the directional modulation (DM) concept for RHS, where a large number of elements are exploited to control not only the signal’s power at the receiver but also its phase. Thus, a novel DM algorithm is proposed for RHS enables modulating a carrier wave to transmit information toward specific directions while broadcasting arbitrary signals toward other directions. Error vector magnitude results are reported for multiple users, where the directions of two users with respect to the RHS are varied. Mutual information result is also provided for 6 users to demonstrate the application of RHS for the physical layer security. Results are highly promising for future low-cost and secure spatially multiplexed communications.
ISSN:1687-1499
1687-1472
1687-1499
DOI:10.1186/s13638-024-02383-3