Enrico Maria Vitucci

Prof. Enrico Maria Vitucci

University of Bologna - Department of Electrical, Electronic, and Information Engineering "Guglielmo Marconi" - DEI
orcid

Research Focus & Metrics

Academic Career Length

21Years (2006-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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8 January 2007 in IEEE Transactions on Antennas and Propagation
Verified
Journal Article
Closed access
VDVittorio Degli-Esposti
Vittorio Degli-Esposti
FFFranco Fuschini
Franco Fuschini
Enrico Maria VitucciEnrico Maria Vitucci
Enrico Maria Vitucci
GFGabriele Falciasecca
Gabriele Falciasecca
The results of a measurement campaign aimed at determining the far-field diffuse scattering pattern of typical building walls are shown in the paper. Such results are then used to determine and tune simple diffuse scattering models based on the effective roughness approach, to be embedded into ray tracing simulators. It is shown that by adopting an appropriate single-lobe scattering pattern the agreement between simulation and measurement is very good

3 June 2015 in Radio Science
Verified
Journal Article
Closed access
PDF file
FFFranco Fuschini
Franco Fuschini
Enrico Maria VitucciEnrico Maria Vitucci
Enrico Maria Vitucci
MBMarina Barbiroli
Marina Barbiroli
GFGabriele Falciasecca
Gabriele Falciasecca
VDVittorio Degli-Esposti
Vittorio Degli-Esposti

14 February 2022 in IEEE Transactions on Antennas and Propagation
Verified
Journal Article
Closed access
VDVittorio Degli-Esposti
Vittorio Degli-Esposti
Enrico Maria VitucciEnrico Maria Vitucci
Enrico Maria Vitucci
MRMarco Di Renzo
Marco Di Renzo
STSergei A. Tretyakov
Sergei A. Tretyakov
Reconfigurable Intelligent Surfaces (RISs) have attracted major attention in the last few years, thanks to their useful characteristics. An RIS is a nearly passive thin surface that can dynamically change the reradiated field, and can therefore realize anomalous reflection, refraction, focalization, or other wave transformations for engineering the radio propagation environment or realizing novel surface-type antennas. Evaluating the performance and optimizing the deployment of RISs in wireless networks need physically consistent frameworks that account for the electromagnetic characteristics of dynamic metasurfaces. In this paper, we introduce a general macroscopic model for evaluating the scattering from an RIS. The proposed method decomposes the wave reradiated from an RIS into multiple scattering contributions and is aimed at being embedded into ray-based models. Since state-of-the-art ray-based models can already efficiently simulate specular wave reflection, diffraction, and diffuse scattering, but not anomalous reradiation, we enhance them with an approach based on Huygens’ principle and propose two possible implementations for it. Multiple reradiation modes can be modeled through the proposed approach, using the power conservation principle. We validate the accuracy of the proposed model by benchmarking it against several case studies available in the literature, which are based on analytical models, full-wave simulations, and measurements.

31 October 2014 in IEEE Access
Verified
Journal Article
Open access
VDVittorio Degli-Esposti
Vittorio Degli-Esposti
FFFranco Fuschini
Franco Fuschini
Enrico Maria VitucciEnrico Maria Vitucci
Enrico Maria Vitucci
MBMarina Barbiroli
Marina Barbiroli
MZMarco Zoli
Marco Zoli
RTReiner S. Thoma
Reiner S. Thoma
The use of large-size antenna arrays to implement pencil-beam forming techniques is becoming a key asset to cope with the very high throughput density requirements and high path-loss of future millimeter-wave (mm-wave) gigabit-wireless applications. Suboptimal beamforming (BF) strategies based on search over discrete set of beams (steering vectors) are proposed and implemented in present standards and applications. The potential of fully adaptive advanced BF strategies that will become possible in the future, thanks to the availability of accurate localization and powerful distributed computing, is evaluated in this paper through system simulation. After validation and calibration against mm-wave directional indoor channel measurements, a 3-D ray tracing model is used as a propagation-prediction engine to evaluate performance in a number of simple, reference cases. Ray tracing itself, however, is proposed and evaluated as a real-time prediction tool to assist future BF techniques.

25 March 2016 in IEEE Transactions on Antennas and Propagation
Verified
Journal Article
Closed access
LTLi Tian
Li Tian
VDVittorio Degli-Esposti
Vittorio Degli-Esposti
Enrico Maria VitucciEnrico Maria Vitucci
Enrico Maria Vitucci
XYXuefeng Yin
Xuefeng Yin
Graph theory channel modeling is an efficient approach to simulate multipath radio propagation including the reverberation effect of electromagnetic waves. In this contribution, without modifying the modeling framework, we proposed a semi-deterministic channel modeling approach by associating the scatterers with realistic environment objects, and by calculating the coefficients of the propagation paths on the base of a physically sound and proven diffuse scattering theory. The diffuse multipath components are then combined with the specular components (SCs) simulated by ray-tracing (RT) to obtain a complete channel representation. The proposed method is evaluated in two reference scenarios at 3.8 and 60 GHz, respectively, by comparing the simulated channel characteristics with channel measurement data. Results show that the proposed method can accurately predict the channel characteristics in both the delay domain and the angular domain. The proposed approach is appropriate to model multipath propagation in confined indoor or dense-urban environment at millimeter (mm)-wave frequencies and above, where reverberation and rough-surface scattering can be important phenomena.

12 August 2011 in IEEE Transactions on Antennas and Propagation
Verified
Journal Article
Closed access
VDVittorio Degli-Esposti
Vittorio Degli-Esposti
VKVeli-Matti Kolmonen
Veli-Matti Kolmonen
Enrico Maria VitucciEnrico Maria Vitucci
Enrico Maria Vitucci
PVPertti Vainikainen
Pertti Vainikainen
Cross-polarization coupling is an important radio propagation characteristic in dual-polarized multiple-input multiple output (MIMO) systems. Still, few studies analyze the polarimetric properties of the radio channel in relation to the actual propagation conditions and processes taking place in urban environment. The topic is studied in the present paper with the aid of dual-polarized MIMO measurements and ray tracing simulations. Several scenarios are considered, and the impact of the different propagation characteristics (LOS, NLOS, link-distance, presence of diffuse-scattering, angular distribution of the signal, etc.) on cross-polarization coupling is analyzed. Generally, a fairly high degree of coupling is observed due to multipath propagation and especially to diffuse scattering. Surprisingly, it does not appear to depend on link distance.