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Journal Article
Implementation and Evaluation of Hierarchical Beam Selection Algorithm for mmWave WPT Systems
- Authors
- Jae Cheol Park, Jungick Moon, Junil Choi
- Issue Date
- 2026-04
- Citation
- IEEE Access, v.14, pp.47614-47625
- ISSN
- 2169-3536
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- In this paper, the millimeter wave (mmWave) wireless power transfer (WPT) system is considered where the wireless charging station (WCS) operates without prior knowledge of the wireless charging device (WCD)'s location. A hierarchical beam selection algorithm is proposed, which employs hierarchical beams with varying beamwidths to determine the optimal beam for the WCD while mitigating error propagation (EP) across levels. The proposed algorithm consists of the beam identification process and the verification process. In the beam identification process, the WCS identifies the beam that achieves the highest received signal strength indicator (RSSI). In the verification process, the WCS validates the selected beam using the verification beam set, which is constructed based on the beam with the second-highest RSSI. This process mitigates EP across hierarchical levels. The proposed algorithm is implemented on the commercial mmWave RF module, and its performance is evaluated through experiments in the indoor laboratory environment.
- Keyword
- experimental validation, Hierarchical beam selection, millimeter waves (mmWave), verification process, wireless power transfer (WPT)
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
