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A Communication Anti-Jamming Scheme Assisted by RIS with Angular Response.

Jinpeng Wang1, Wenyu Jiang2, Kaizhi Huang2

  • 1School of Cyber Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.

Entropy (Basel, Switzerland)
|December 23, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces an angular-response reconfigurable intelligent surface (RIS) to improve anti-jamming in communication systems. The novel approach enhances legitimate signal strength while attenuating jamming signals, boosting channel capacity.

Keywords:
angular responseanti-jammingchannel capacityreconfigurable intelligent surface

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Area of Science:

  • Wireless communication
  • Electromagnetics
  • Signal processing

Background:

  • Reconfigurable intelligent surfaces (RIS) enhance wireless communication by optimizing reflection coefficients.
  • Existing anti-jamming schemes often overlook the crucial link between RIS reflection and electromagnetic wave incident angles.

Purpose of the Study:

  • To propose a novel anti-jamming scheme for communication systems utilizing a reconfigurable intelligent surface (RIS) with angular response.
  • To optimize RIS reflection coefficients to amplify legitimate signals and attenuate jamming signals, thereby increasing channel capacity.

Main Methods:

  • Formulated an optimization problem to enhance legitimate signals and suppress jamming signals.
  • Addressed the non-convexity arising from the coupling between incident angles and RIS reflection coefficients.
  • Employed complex Taylor expansion and multidimensional complex quadratic transform (MCQT) to convert the problem into a quadratically constrained quadratic programming (QCQP) problem.
  • Utilized the alternating direction method of multipliers (ADMM) algorithm for solving the optimization problem.

Main Results:

  • The proposed RIS scheme with angular response significantly improves anti-jamming performance compared to schemes without angular consideration.
  • Demonstrated effective amplification of legitimate signals and attenuation of jamming signals through optimized RIS reflection coefficients.
  • Validated the effectiveness of the ADMM algorithm in solving the complex optimization problem.

Conclusions:

  • The integration of angular response in RIS is critical for effective anti-jamming in wireless communication systems.
  • The proposed optimization strategy and solution method provide a robust framework for enhancing communication security and reliability.
  • This research offers a significant advancement in RIS-assisted anti-jamming techniques, paving the way for more resilient communication networks.