Joint optimization of STAR-RIS assisted SWIPT communication systems

Junlong Yang; Xizhong Qin; Zhenhong Jia; Jiani Yu

doi:10.1117/12.3024746

3 April 2024 Joint optimization of STAR-RIS assisted SWIPT communication systems

Junlong Yang, Xizhong Qin, Zhenhong Jia, Jiani Yu

Proceedings Volume 13078, Second International Conference on Informatics, Networking, and Computing (ICINC 2023); 1307805 (2024) https://doi.org/10.1117/12.3024746
Event: Second International Conference on Informatics, Networking, and Computing (ICINC 2023), 2023, Wuhan, China

Abstract

Simultaneous wireless information and power transfer (SWIPT) is an effective energy-saving technology, but its efficiency is hindered by environmental factors. The introduction of reconfigurable intelligent surfaces (RIS) has alleviated this issue, although it still faces significant constraints due to geographical limitations. This paper proposes a scheme that employs a simultaneously transmitting and reflecting (STAR)-RIS to assist SWIPT. It can overcome this limitation, achieve higher degrees of freedom (DoF), and provide better quality of service (QoS) for users on both sides of the ground. Meanwhile, we have considered a hybrid device based on a power splitting, which is capable of both energy harvesting and information decoding. We have proposed an efficient alternating optimization (AO) method to optimize the phase and amplitude vectors for reflection and transmission, beamforming and the optimal power splitting ratio, achieving an optimal balance between data rate and energy efficiency. Finally, simulation results demonstrate that the sum rate of the proposed model is superior to traditional RIS and other benchmark schemes.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Junlong Yang, Xizhong Qin, Zhenhong Jia, and Jiani Yu "Joint optimization of STAR-RIS assisted SWIPT communication systems", Proc. SPIE 13078, Second International Conference on Informatics, Networking, and Computing (ICINC 2023), 1307805 (3 April 2024); https://doi.org/10.1117/12.3024746

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