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Abstract
Radio frequency (RF) wireless power transfer (WPT) is a promising technology for 6G use cases. It enables a massive yet sustainable deployment of batteryless energy neutral (EN) devices at an unprecedented scale. Recent research on 6G is exploring high operating frequencies up to the THz spectrum, where antenna arrays with large apertures are capable of forming narrow, 'laser-like' beams. At sub-10 GHz frequencies, physically large antenna arrays are considered that are operating in the array near field. Transmitting spherical wavefronts, power can be focused to a focal point rather than a beam, which allows for efficient and radiation-safe WPT. We formulate a multipath channel model comprising specular components and diffuse scattering to find the WPT power budget in a realistic indoor scenario. Specular components can be predicted by means of a geometric model. This is used to transmit power via multiple beams simultaneously, increasing the available power budget and expanding the initial access distance. We show that exploiting this 'beam diversity' reduces the required fading margin for the initial access to EN devices.
Originalsprache | englisch |
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Titel | 2022 IEEE International Conference on Communications Workshops (ICC Workshops) |
Seiten | 127-132 |
Seitenumfang | 6 |
ISBN (elektronisch) | 9781665426718 |
DOIs | |
Publikationsstatus | Veröffentlicht - Mai 2022 |
Veranstaltung | 2022 IEEE International Conference on Communications: IEEE ICC 2022 - Coex - 513 Yeongdong-daero, Gangnam-gu, Seoul, South Korea, Seoul, Südkorea Dauer: 16 Mai 2022 → 20 Mai 2022 https://icc2022.ieee-icc.org/ |
Konferenz
Konferenz | 2022 IEEE International Conference on Communications |
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Kurztitel | IEEE ICC 2022 |
Land/Gebiet | Südkorea |
Ort | Seoul |
Zeitraum | 16/05/22 → 20/05/22 |
Internetadresse |
ASJC Scopus subject areas
- Artificial intelligence
- Steuerung und Optimierung
- Signalverarbeitung
- Computernetzwerke und -kommunikation
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EU - REINDEER - REsilient INteractive-Anwendungen durch Hyper-Diversity in energieeffizienter RadioWeaves-Technologie
Witrisal, K., Deutschmann, B., Wilding, T. & Leitinger, E.
1/01/21 → 30/06/24
Projekt: Forschungsprojekt