International Journal of Nonlinear Analysis and Applications

A novel blind adaptive algorithm applied to new designed smart antenna array for interference suppression

Document Type : Research Paper

Authors

1 Department of Electrical Engineering, Iran University of Science and Technology, Tehran 16846-13114, Iran

2 School of New Technologies, Iran University of Science and Technology, Tehran 16846-13114, Iran

Abstract

In this study, a novel blind adaptive algorithm with discrete periodic variables is introduced. The proposed discrete periodic variable algorithm (DPVA) has been applied to the new designend 7-element antenna array. The DPVA is based on minimizing the output power to steer null (or nearly null) gain in the direction of interference. Discrete phase shift leads to the use of hybrid phase shifter in practice and thus reduction of implementation costs. In addition, the proposed algorithm has low computational complexity. Results show that DPVA has fast and reliable convergence. It is converged within less than 400 iterations and less than 1 millisecond time duration. The null depth created by this algorithm is 90 \(dB\) which is an indication of pure cancellation of the interference. Furthermore, the effect of a number of interference sources is investigated. It is shown that the null depth is decreased by the increase of interference sources. In the studied 7-element array, increasing the interference sources up to 6 decreases the null depth to 20 \(dB\).

Keywords

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International Journal of Nonlinear Analysis and Applications
Volume 15, Issue 6
June 2024
Pages 111-122
  • Receive Date: 25 July 2022
  • Revise Date: 28 September 2022
  • Accept Date: 17 October 2022