Influence of Environment Richness on the Increase of MIMO Capacity With Number of Antennas

Bentosela, F.; Marchetti, Nicola; Cornean, Horia D.

doi:10.1109/tap.2014.2318323

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…), EM Green's function [20,21,22,23], full-wave simulation [24,25], and dyadic Green's function in free space [13]. Particularly, the communication channels have been investigated with various EM methods, such as the numerical parabolic equations for tunnels [26], stochastic Green's function for stochastic environments [27], ray-tracing methods [28] and some approximate models for the environment with finite scatterers [29,30,31,32]. These works provide some useful results for the DOF/EDOF of MIMO systems in free space and stochastic environments.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Effective-Degree-of-Freedom Limit of a MIMO System in 2-D Inhomogeneous Environment

Yuan

Sun

et al. 2022

Electronics

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Compared with a single-input-single-output (SISO) wireless communication system, the benefit of multiple-input-multiple-output (MIMO) technology originates from its extra degree of freedom (DOF), also referred to as scattering channels or spatial electromagnetic (EM) modes, brought by spatial multiplexing. When the physical sizes of transmitting and receiving arrays are fixed and there are sufficient antennas (typically with half-wavelength spacings), the DOF limit is only dependent on the propagating environment. Analytical methods can be used to estimate this limit in free space, and some approximate models are adopted in stochastic environments, such as Clarke’s model and Ray-tracing methods. However, this DOF limit in a certain inhomogeneous environment has not been well discussed with rigorous full-wave numerical methods. In this work, volume integral equation (VIE) is implemented for investigating the limit of MIMO effective degree of freedom (EDOF) in three representative two-dimensional (2-D) inhomogeneous environments. Moreover, we clarify the relation between the performance of a MIMO system and the scattering characteristics of its propagating environment.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Effective-Degree-of-Freedom Limit of a MIMO System in 2-D Inhomogeneous Environment

Yuan

Sun

et al. 2022

Electronics

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“…In addition, propagation environment is increasingly severe. Therefore, capacity increase of the MIMO system becomes more difficult than before [4]. Even for the short-range line-of-sight (LOS) MIMO system in the three-dimensional (3D) space, the capacity is still limited by the transceiver distance, the wavelength and the array size [5].…”

Section: Introductionmentioning

confidence: 99%

Radio Vortex–Multiple-Input Multiple-Output Communication Systems With High Capacity

Zhu

Jiang

et al. 2015

IEEE Access

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As a potential technique to improve channel capacity, orbital angular momentum has been developed in the radio field. In this paper, a novel radio vortex-multiple-input multiple-output (RV-MIMO) system is proposed to provide high capacity in free space. In particular, the vortex channel of the proposed system is modeled. Based on this model, the optimal vortex phase is derived, which results in the optimal capacity of the proposed RV-MIMO system. Simulation results show that the proposed RV-MIMO system could achieve higher capacity than the MIMO system in free space.INDEX TERMS Orbital angular momentum, radio vortex, multiple-input multiple-output, vortex phase.

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Spatial Interference Cancellation in MIMO Systems Using Side Lobe Canceller Structure

Ghaedi

Shirazi

Sadeghzadeh

2018

Iran J Sci Technol Trans Electr Eng

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Influence of Environment Richness on the Increase of MIMO Capacity With Number of Antennas

Abstract: International audienc

Cited by 5 publications

References 27 publications

Electromagnetic Effective-Degree-of-Freedom Limit of a MIMO System in 2-D Inhomogeneous Environment

Electromagnetic Effective-Degree-of-Freedom Limit of a MIMO System in 2-D Inhomogeneous Environment

Radio Vortex–Multiple-Input Multiple-Output Communication Systems With High Capacity

Spatial Interference Cancellation in MIMO Systems Using Side Lobe Canceller Structure

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