Active IRS-assisted wireless network power allocation method based on Lagrange interpolation algorithm

CN117769012BActive Publication Date: 2026-07-03HAINAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HAINAN UNIV
Filing Date
2023-12-28
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing technologies in Active IRS-assisted wireless communication networks suffer from high computational complexity and poor communication quality at the user end.

Method used

A power allocation method based on the Lagrange interpolation algorithm is adopted. By optimizing the base station's transmit beamforming vector and the phase shift vector of the Active IRS, the problem is transformed into a sub-optimization problem about the power allocation factor. The closed-form solution is calculated using the Lagrange interpolation algorithm, which reduces computational complexity and improves the communication quality at the user end.

Benefits of technology

It achieves high client-side communication quality and speed performance with low computational complexity, thereby improving the client-side communication quality.

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Abstract

This invention discloses a power allocation method for Active IRS-assisted wireless networks based on the Lagrange interpolation algorithm. The method involves: first, configuring the base station, user terminal, and Active IRS; then, obtaining the SNR and achievable data rate of the user terminal based on the base station's transmitted signal, the reflected signal from the Active IRS, and the power consumed by the Active IRS, and determining the optimization problem P1 to maximize the SNR; next, determining the base station's transmit beamforming vector and the Active IRS's phase shift vector; then, transforming the SNR maximization optimization problem P1 into a sub-optimization problem P1-1 concerning the power allocation factor β; finally, using the Lagrange interpolation algorithm to calculate the closed-form solution of the power allocation factor. This invention improves the achievable data rate performance of Active IRS-assisted wireless networks, reduces computational complexity, and improves the communication quality of the user terminal.
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