Signaling and Architecture for Unified Simultaneous Wireless Information and Power Transfer

Abstract

In this paper, we propose a unified simultaneous wireless information and power transfer (SWIPT) signal and its architecture design in order to take advantage of both single tone and multi-tone signaling by adjusting only the power allocation ratio of a unified signal. For this, we design a novel unified and integrated receiver architecture for the proposed unified SWIPT signaling, which consumes low power with an envelope detection. We demonstrate that the proposed unified SWIPT system improves the achievable rate under the self-powering condition for low-power Internet-of-Things (IoT) devices. This will facilitate effective deployment of low-power IoT networks that concurrently supply both information and energy wirelessly to the devices by using the proposed unified SWIPT signaling and architecture.