Transmit Power Minimization in Multihop AF Relay Systems with Simultaneous Wireless Information and Power Transfer

Kunju Kim; Derek Kwaku Pobi Asiedu; Prince Anokye; Eunkyung Kim; Kyoung-Jae Lee

doi:10.20944/preprints202311.0358.v1

Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 6 November 2023 / Approved: 6 November 2023 / Online: 6 November 2023 (14:23:21 CET)

This paper studies a multihop amplify-and-forward (AF) simultaneous wireless information and power transfer (SWIPT) relaying system. Each relaying node harvests energy using power splitting (PS) scheme from a part of its received signal to amplify and forward the rest the received signal to the next relay. Based on this system model and signal flow, we derived and solved the convex energy minimization problem with optimal PS ratio. The influence of processing cost was then investigated for the AF-SWIPT system with the decode-and-forward SWIPT as benchmark, where AF-SWIPT was found to be superior.

multihop amplify-and-forward (AF) relays; power splitting (PS) ratio; simultaneous wireless information and power transfer (SWIPT)

Engineering, Telecommunications

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Transmit Power Minimization in Multihop AF Relay Systems with Simultaneous Wireless Information and Power Transfer

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