This study delves into the potential of harnessing the orbital angular momentum (OAM) property of electromagnetic waves in near-field and line-of-sight scenarios by utilizing large intelligentsurfaces, in the context of holographic multiple-input multiple-output (MIMO) communications. Thepaper starts by characterizing OAM-based communications and investigating the connection betweenOAM-carrying waves and optimum communication modes recently analyzed for communicating withsmart surfaces. Subsequently, it proposes implementable strategies for generating and detecting OAM based communication signals using intelligent surfaces and optimization methods that leverage focusingtechniques. Then, the performance of these strategies is quantitatively evaluated through simulations. Thenumerical results show that OAM waves while constituting a viable and more practical alternative tooptimum communication modes are sub-optimal in terms of achievable capacity.

Holographic MIMO Communications Exploiting the Orbital Angular Momentum

Nicolo Decarli
Secondo
;
2023

Abstract

This study delves into the potential of harnessing the orbital angular momentum (OAM) property of electromagnetic waves in near-field and line-of-sight scenarios by utilizing large intelligentsurfaces, in the context of holographic multiple-input multiple-output (MIMO) communications. Thepaper starts by characterizing OAM-based communications and investigating the connection betweenOAM-carrying waves and optimum communication modes recently analyzed for communicating withsmart surfaces. Subsequently, it proposes implementable strategies for generating and detecting OAM based communication signals using intelligent surfaces and optimization methods that leverage focusingtechniques. Then, the performance of these strategies is quantitatively evaluated through simulations. Thenumerical results show that OAM waves while constituting a viable and more practical alternative tooptimum communication modes are sub-optimal in terms of achievable capacity.
2023
Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni - IEIIT
Beam focusing
communication modes
degrees of freedom
large intelligent surface
near field
orbital angular momentum (OAM).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/455524
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