Wireless power distributions in multi-cavity systems at high frequencies

Adnan, Farasatul; Blakaj, Valon; Phang, Sendy; Antonsen, Thomas M.; Creagh, Stephen C.; Gradoni, Gabriele; Tanner, Gregor

Abstract

The next generations of wireless networks will work in frequency bands ranging from sub-6 GHz up to 100 GHz. Radio signal propagation differs here in several critical aspects from the behaviour in the microwave frequencies currently used. With wavelengths in the millimetre range (mmWave), both penetration loss and free-space path loss increase, while specular reflection will dominate over diffraction as an important propagation channel. Thus, current channel model protocols used for the generation of mobile networks and based on statistical parameter distributions obtained from measurements become insufficient due to the lack of deterministic information about the surroundings of the base station and the receiver-devices. These challenges call for new modelling tools for channel modelling which work in the short-wavelength/high-frequency limit and incorporate site-specific details—both indoors and outdoors. Typical high-frequency tools used in this context—besides purely statistical approaches—are based on ray-tracing techniques. Ray-tracing can become challenging when multiple reflections dominate. In this context, mesh-based energy flow methods have become popular in recent years. In this study, we compare the two approaches both in terms of accuracy and efficiency and benchmark them against traditional power balance methods.

Citation

Adnan, F., Blakaj, V., Phang, S., Antonsen, T. M., Creagh, S. C., Gradoni, G., & Tanner, G. (2021). Wireless power distributions in multi-cavity systems at high frequencies. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 477(2245), Article 20200228. https://doi.org/10.1098/rspa.2020.0228

• Journal Article Type: Article
• Acceptance Date: Nov 25, 2020
• Online Publication Date: Jan 20, 2021
• Publication Date: 2021-01
• Deposit Date: Jan 24, 2021
• Publicly Available Date: Feb 16, 2021
• Journal: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
• Print ISSN: 1364-5021
• Electronic ISSN: 1471-2946
• Publisher: The Royal Society
• Peer Reviewed: Peer Reviewed
• Volume: 477
• Issue: 2245
• Article Number: 20200228
• DOI: https://doi.org/10.1098/rspa.2020.0228
• Keywords: General Engineering; General Physics and Astronomy; General Mathematics
• Public URL: https://nottingham-repository.worktribe.com/output/5262561
• Publisher URL: https://royalsocietypublishing.org/doi/10.1098/rspa.2020.0228