Knife-edge diffraction model for vehicle shadowing estimation in site- and scenario-specific wireless channel emulator

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<p></p><p> In developing a site- and scenario-specific wireless channel emulator, a computationally efficient shadowing model for vehicles is essential for dynamic emulation with constrained computational resources. In this work, a single-dominant-ray knife-edge diffraction model is proposed to approximate the overall shadowing gain from a cuboid-shaped vehicle by a single diffraction ray. The proposed model is validated with full-wave simulations at 760 MHz. The efficacy of the model is demonstrated through a comparison of the coefficient of determination with that obtained from full-wave simulations and the 3GPP rectangular screen model.</p>

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