Self-Sustainable Reconfigurable Intelligent Surface Aided Simultaneous Terahertz Information and Power Transfer (STIPT)

Pan, Yijin, Wang, Kezhi, Pan, Cunhua, Zhu, Huiling and Wang, Jiangzhou (2022) Self-Sustainable Reconfigurable Intelligent Surface Aided Simultaneous Terahertz Information and Power Transfer (STIPT). IEEE Transactions on Wireless Communications. pp. 1-15. ISSN 1536-1276 (In Press)

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Official URL: https://doi.org/10.1109/TWC.2022.3140268

Abstract

This paper proposes a new simultaneous terahertz (THz) information and power transfer (STIPT) system, which utilizes a reconfigurable intelligent surface (RIS) for both the data and power transmission. We aim to maximize the information users’ (IUs’) sum data rate while guaranteeing the power harvesting requirements of energy users (EUs) and RIS. To solve the formulated non-convex problem, the block coordinate descent (BCD) based algorithm is adopted to alternately optimize the transmit precoding of IUs, RIS’s reflecting coefficients, and the position of RIS. Additionally, the penalty constrained convex approximation (PCCA) algorithm is proposed to optimize the deployment of the RIS, where the introduced penalties ensure that the solution is always feasible. The simulation results show that the proposed solution outperforms the benchmark schemes, and the proposed BCD algorithm can greatly improve the performance of the STIPT system.

Item Type: Article
Additional Information: Funding information: This work was supported in part by the National Natural Science Foundation of China under Grants 62001107, No. 61971129, No. 61960206005, No. 61871128, Basic Research Project of Jiangsu Provincial Department of Science and Technology under Grant No. BK20190339, No. Bk20192002.
Uncontrolled Keywords: Energy harvesting, intelligent reflecting surface (IRS), OFDM, Precoding, reconfigurable intelligent surface (RIS), Reconfigurable intelligent surfaces, Reflection, Simultaneous terahertz information and power transfer (STIPT), terahertz (THz) communications, Transmitting antennas, Wireless communication
Subjects: G400 Computer Science
G500 Information Systems
Department: Faculties > Engineering and Environment > Computer and Information Sciences
Depositing User: Elena Carlaw
Date Deposited: 01 Feb 2022 13:50
Last Modified: 01 Feb 2022 14:00
URI: http://nrl.northumbria.ac.uk/id/eprint/48324

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