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<p>This paper explores an innovative wireless communication framework that combines Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surfaces (STAR-RIS) with vibration-based energy harvesting and adaptive power control. In this setup, a secondary transmitter captures energy from ambient mechanical vibrations and adjusts its transmission power on the fly to minimize interference with a primary receiver. The secondary signal is then reflected and transmitted using a STAR-RIS, facilitating effective signal delivery to two secondary users situated in the reflective and transmissive areas of the RIS, referred to as <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11760_2025_4769_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="20" /> </InlineMediaObject> <EquationSource Format="TEX">\(U_r\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>U</mi> <mi>r</mi> </msub> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11760_2025_4769_Article_IEq2.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="19" /> </InlineMediaObject> <EquationSource Format="TEX">\(U_t\)</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>U</mi> <mi>t</mi> </msub> </math></EquationSource> </InlineEquation>, respectively. Numerical results highlight the proposed scheme’s effectiveness in improving system performance, especially in environments with strong vibration sources and tight interference limits.</p>

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STAR-RIS-assisted communication with adaptive transmit power and vibration-based energy harvesting

  • 期刊论文

  • 发表日期：

    2025年9月22日

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  • Faisal Alanazi

摘要

This paper explores an innovative wireless communication framework that combines Simultaneously Transmitting and Reflecting Reconfigurable Intelligent Surfaces (STAR-RIS) with vibration-based energy harvesting and adaptive power control. In this setup, a secondary transmitter captures energy from ambient mechanical vibrations and adjusts its transmission power on the fly to minimize interference with a primary receiver. The secondary signal is then reflected and transmitted using a STAR-RIS, facilitating effective signal delivery to two secondary users situated in the reflective and transmissive areas of the RIS, referred to as \(U_r\) U r and \(U_t\) U t , respectively. Numerical results highlight the proposed scheme’s effectiveness in improving system performance, especially in environments with strong vibration sources and tight interference limits.