13,937 research outputs found
The Intensity Matching Approach: A Tractable Stochastic Geometry Approximation to System-Level Analysis of Cellular Networks
The intensity matching approach for tractable performance evaluation and
optimization of cellular networks is introduced. It assumes that the base
stations are modeled as points of a Poisson point process and leverages
stochastic geometry for system-level analysis. Its rationale relies on
observing that system-level performance is determined by the intensity measure
of transformations of the underlaying spatial Poisson point process. By
approximating the original system model with a simplified one, whose
performance is determined by a mathematically convenient intensity measure,
tractable yet accurate integral expressions for computing area spectral
efficiency and potential throughput are provided. The considered system model
accounts for many practical aspects that, for tractability, are typically
neglected, e.g., line-of-sight and non-line-of-sight propagation, antenna
radiation patterns, traffic load, practical cell associations, general fading
channels. The proposed approach, more importantly, is conveniently formulated
for unveiling the impact of several system parameters, e.g., the density of
base stations and blockages. The effectiveness of this novel and general
methodology is validated with the aid of empirical data for the locations of
base stations and for the footprints of buildings in dense urban environments.Comment: Submitted for Journal Publicatio
Modeling the Epidemic Outbreak and Dynamics of COVID-19 in Croatia
The paper deals with a modeling of the ongoing epidemic caused by Coronavirus
disease 2019 (COVID-19) on the closed territory of the Republic of Croatia.
Using the official public information on the number of confirmed infected,
recovered and deceased individuals, the modified SEIR compartmental model is
developed to describe the underlying dynamics of the epidemic. Fitted modified
SEIR model provides the prediction of the disease progression in the near
future, considering strict control interventions by means of social distancing
and quarantine for infected and at-risk individuals introduced at the beginning
of COVID-19 spread on February, 25th by Croatian Ministry of Health. Assuming
the accuracy of provided data and satisfactory representativeness of the model
used, the basic reproduction number is derived. Obtained results portray
potential positive developments and justify the stringent precautionary
measures introduced by the Ministry of Health.Comment: 5 pages, 6 figures, to appear in the Proceedings of the SpliTech2020
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