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- W4313444263 abstract "Holographic Multiple-Input and Multiple-Output (MIMO) is envisioned as a promising technology to realize unprecedented spectral efficiency by integrating a large number of antennas into a compact space. Most research on holographic MIMO is based on isotropic scattering environments, and the antenna gain is assumed to be unlimited by deployment space. However, the channel might not satisfy isotropic scattering because of generalized angle distributions, and the antenna gain is limited by the array aperture in reality. In this letter, we aim to analyze the holographic MIMO channel capacity under practical angle distribution and array aperture constraints. First, we calculate the spectral density for generalized angle distributions by introducing a wavenumber domain-based method. And then, the capacity under generalized angle distributions is analyzed and two different aperture schemes are considered. Finally, numerical results show that the capacity is obviously affected by angle distribution at high signal-to-noise ratio (SNR) but hardly affected at low SNR, and the capacity will not increase infinitely with antenna density due to the array aperture constraint." @default.
- W4313444263 created "2023-01-06" @default.
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- W4313444263 date "2022-12-29" @default.
- W4313444263 modified "2023-09-25" @default.
- W4313444263 title "Capacity Analysis of Holographic MIMO Channels with Practical Constraints" @default.
- W4313444263 doi "https://doi.org/10.48550/arxiv.2212.14282" @default.
- W4313444263 hasPublicationYear "2022" @default.
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