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Calibrating Wireless Ray Tracing for Digital Twinning using Local Phase Error Estimates by Ruah, Clement; Simeone, Osvaldo; Hoydis, Jakob; Al-Hashimi, Bashir is a scholarly article available to read on EtoBox.

What is Calibrating Wireless Ray Tracing for Digital Twinning using Local Phase Error Estimates about?

Embodying the principle of simulation intelligence, digital twin (DT) systems construct and maintain a high-fidelity virtual model of a physical system. This paper focuses on ray tracing (RT), which is widely seen as an enabling technology for DTs of the radio access network (RAN) segment of next-generation disaggregated wireless systems. RT makes it possible to simulate channel conditions, enabling data augmentation and prediction-based transmission. However, the effectiveness of RT hinges on the adaptation of the electromagnetic properties assumed by the RT to actual channel conditions, a process known as calibration. The main challenge of RT calibration is the fact that small discrepancies in the geometric model fed to the RT software hinder the accuracy of the predicted phases of the simulated propagation paths. Existing solutions to this problem either rely on the channel power profile, hence disregarding phase information, or they operate on the channel responses by assuming the simulated phases to be sufficiently accurate for calibration. This paper proposes a novel channel response-based scheme that, unlike the state of the art, estimates and compensates for the phase error

Author

Ruah, Clement; Simeone, Osvaldo; Hoydis, Jakob; Al-Hashimi, Bashir

Published

2023

Language

EN