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Fourier Plane-Wave Series Expansion for Holographic MIMO Communications by Pizzo, Andrea; Sanguinetti, Luca; Marzetta, Thomas L. is a scholarly article available to read on EtoBox.

What is Fourier Plane-Wave Series Expansion for Holographic MIMO Communications about?

Imagine a MIMO communication system that fully exploits the propagation characteristics offered by an electromagnetic channel and ultimately approaches the limits imposed by wireless communications. This is the concept of Holographic MIMO communications. Accurate and tractable channel modeling is critical to understanding its full potential. Classical stochastic models used by communications theorists are derived under the electromagnetic far-field assumption, i.e. planar wave approximation over the array. However, such assumption breaks down when electromagnetically large (compared to the wavelength) antenna arrays are considered. In this paper, we start from the first principles of wave propagation and provide a Fourier plane-wave series expansion of the channel response, which fully captures the essence of electromagnetic propagation in arbitrary scattering and is also valid in the (radiative) near-field. The expansion is based on the Fourier spectral representation and has an intuitive physical interpretation, as it statistically describes the angular coupling between source and receiver. When discretized uniformly, it leads to a low-rank semi-unitarily equivalent approximation

Author

Pizzo, Andrea; Sanguinetti, Luca; Marzetta, Thomas L.

Published

2021

Language

EN