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Double reconfigurable intelligent surface-assisted wireless communication system for energy efficiency improvement over weibull fading channels

Author

Listed:
  • R. Mahammad Rafi

    (National Institute of Technology)

  • V. Nivetha

    (National Institute of Technology)

  • V. Sudha

    (National Institute of Technology)

Abstract

In this paper, we propose a double reconfigurable intelligent surface (RIS)-assisted wireless communication system to improve energy efficiency when a direct link from source to destination is obstructed. First, we model a single RIS-assisted wireless communication system by deploying RIS midway between the source and destination link over the Weibull fading channel. Next, we consider the double-RIS system, in which RIS-1 (R1) and RIS-2 (R2) are near the source and destination respectively, with overall reflecting elements in the system equal to the single-RIS system. For both systems, we derive the closed-form expressions for the bounds (lower and upper) of ergodic capacity and exact closed-form expressions for outage probability. The accuracy of the presented theoretical framework is validated through Monte-Carlo simulations. From the comparison, we found that the double-RIS system surpasses the S-RIS system in terms of ergodic capacity and outage probability. Finally, we provide the ergodic capacity and energy efficiency analysis of both systems as a function of spectral efficiency by varying the position of RISs and notice that the double-RIS system with R1 and R2 near to source and destination is more energy efficient than the S-RIS system.

Suggested Citation

  • R. Mahammad Rafi & V. Nivetha & V. Sudha, 2023. "Double reconfigurable intelligent surface-assisted wireless communication system for energy efficiency improvement over weibull fading channels," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 83(3), pages 289-301, July.
    • Handle: RePEc:spr:telsys:v:83:y:2023:i:3:d:10.1007_s11235-023-01023-3
    DOI: 10.1007/s11235-023-01023-3
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    References listed on IDEAS

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    1. Sandeep Kumar & Poonam Yadav & Manpreet Kaur & Rajesh Kumar, 2022. "A survey on IRS NOMA integrated communication networks," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 80(2), pages 277-302, June.
    2. Ghassan Alnwaimi & Hatem Boujemaa, 2021. "Optimal packet length for wireless communications using reconfigurable intelligent surfaces," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 77(4), pages 683-696, August.
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