Assessment of MU-MIMO schemes with cylindrical arrays under 3GPP 3D channel model for B5G networks

SummarySatellite communication systems will be a key component of 5G and 6G networks to achieve the goal of providing unlimited and ubiquitous communications and deploying smart and sustainable networks. To meet the ever‐increasing demand for higher throughput in 5G and beyond, aggressive frequency reuse schemes (i.e., full frequency reuse), combined with digital beamforming techniques to cope with the massive co‐channel interference, are recognized as a key solution. Aimed at (i) eliminating the joint optimization problem among the beamforming vectors of all users, (ii) splitting it into distinct ones, and (iii) finding a closed‐form solution, we propose a beamforming algorithm based on maximizing the users' signal‐to‐leakage‐and‐noise ratio served by a low Earth orbit satellite. We investigate and assess the performance of several beamforming algorithms, including both those based on channel state information at the transmitter, that is, minimum mean square error and zero forcing, and those only requiring the users' locations, that is, switchable multi‐beam. Through a detailed numerical analysis, we provide a thorough comparison of the performance in terms of per‐user achievable spectral efficiency of the aforementioned beamforming schemes, and we show that the proposed signal to‐leakage‐plus‐noise ratio beamforming technique is able to outperform both minimum mean square error and multi‐beam schemes in the presented satellite communication scenario.

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Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

Dakkak

Riviello

Guidotti

et al. 2023

Satell Commun Network

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Multi-Layer Multi-User MIMO With Cylindrical Arrays Under 3GPP 3D Channel Model for B5G/6G Networks

Riviello,

Tuninato,

Garello

2024

IEEE Access

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Assessment of MU-MIMO schemes with cylindrical arrays under 3GPP 3D channel model for B5G networks

Cited by 2 publications

References 13 publications

Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

Multi-Layer Multi-User MIMO With Cylindrical Arrays Under 3GPP 3D Channel Model for B5G/6G Networks

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