Optimization for an Indoor 6G Simultaneous Wireless Information and Power Transfer System

Chien-Ching Chiu; Wei Chien; Po-Hsiang Chen; Yu-Ting Cheng; Hao Jiang; En-Lin Chen

doi:10.3390/sym14061268

Symmetry (Jun 2022)

Optimization for an Indoor 6G Simultaneous Wireless Information and Power Transfer System

Chien-Ching Chiu,
Wei Chien,
Po-Hsiang Chen,
Yu-Ting Cheng,
Hao Jiang,
En-Lin Chen

Affiliations

Chien-Ching Chiu: Department of Electrical and Computer and Engineering, Tamkang University, New Taipei City 251301, Taiwan
Wei Chien: Department of Computer Information and Network Engineering, Lunghwa University of Science and Technology, Taoyuan City 333326, Taiwan
Po-Hsiang Chen: Department of Electrical and Computer and Engineering, Tamkang University, New Taipei City 251301, Taiwan
Yu-Ting Cheng: Department of Electrical and Computer and Engineering, Tamkang University, New Taipei City 251301, Taiwan
Hao Jiang: School of Engineering, San Francisco State University, San Francisco, CA 94117-1080, USA
En-Lin Chen: Department of Electrical and Computer and Engineering, Tamkang University, New Taipei City 251301, Taiwan

DOI: https://doi.org/10.3390/sym14061268
Journal volume & issue: Vol. 14, no. 6
p. 1268

Abstract

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Antenna beamforming for Simultaneous Wireless Information and Power Transfer (SWIPT) and Wireless Power Transfer (WPT) in an indoor 6G communication system is presented in this paper. The objective function is to maximize the total harvesting power for the SWIPT and WPT nodes with the constraints of the bit error rate and minimum harvesting power. In the study, the power-splitting ratio between harvesting power and decoding information can be adjusted for the SWIPT node. Due to the non-convex problem, we use Self-Adaptive Dynamic Differential Evolution (SADDE) to optimize the designed multi-objective function. We use a symmetric antenna array to study three situations of distance—closer, farther, and similar—between the transmitting antenna and the individual SWIPT and WPT nodes in this paper. Experimental results show that the overall harvesting efficiency is improved, especially in the case of SWIPT nodes closer to the transmitter. The total harvesting power can be improved by 86.7% in the total short-distance case, and by 7.87% in the total long-distance case.

Published in Symmetry

ISSN: 2073-8994 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Mathematics
Website: http://www.mdpi.com/journal/symmetry/

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