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arXiv · 2301.05626

Channel Measurement for Holographic MIMO: Benefits and Challenges of Spatial Oversampling

Tengjiao Wang·Yongxi Liu·Ming Zhang·Wei E. I. Sha·Cen Ling·Chao Li·Shaobo Wang
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Abstract

In this paper, the channel of an indoor holographic multiple-input multiple-output (MIMO) system is measured. It is demonstrated through experiments for the first time that the spatial oversampling of holographic MIMO systems is able to increase the capacity of a wireless communication system significantly. However, the antenna efficiency is the most crucial challenge preventing us from getting the capacity improvement. An extended EM-compliant channel model is also proposed for holographic MIMO systems, which is able to take the non-isotropic characteristics of the propagation environment, the antenna pattern distortion, the antenna efficiency, and the polarization characteristics into consideration.

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Tengjiao Wang, Yongxi Liu, Ming Zhang, Wei E. I. Sha, Cen Ling, Chao Li, Shaobo Wang. 2023-01-13. Channel Measurement for Holographic MIMO: Benefits and Challenges of Spatial Oversampling. https://arxiv.org/abs/2301.05626

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