WiFi Electromagnetic Field Modelling for Indoor Localization

Abstract

The aim of this paper is to develop simplified model for WiFi electromagnetic field propagation. The model can be used in preliminary estimation of WiFi transmitter localization for the purpose of WiFi-based indoor localization. It can be particularly useful when designing structural networks.We have developed a simplified linear model of WiFi electromagnetic field modelling and compared it with the most commonly used, more sophisticated models and with measurement results which were carried out in the laboratory. As demonstrated by the results of measurements conducted using various hardware, the accuracy of this simplified model introduced is similar to the commonly used models, but the number of parameters is lower. Therefore, our model easier to implement in real life conditions. The model presented in this paper enables WiFi electromagnetic field modelling when the exact values of propagation parameters and transmitter characteristics is unknown. This is usually the case at the early stage of structural network design,when exact parameters of building construction materials are not known. As the model is very simple, it does not require much effort to deploy, while its accuracy is sufficient for preliminary WiFi transmitter localization. Simplified models of WiFi electromagnetic field propagation are known, but no comparative research combined with measurements has been done in this field. This paper provides a comparison of different electromagnetic field models which can be applied to WiFi electromagnetic field propagation together with measurement results.

Mathematical simulation of adaptive vector finite element method for the analysis of electromagnetic vibration spectrum field response

“…A simplified model of WiFi electromagnetic vibration spectrum field propagation is known, but there has been no comparative study of combining measurement with measurement in this field. This paper provides a comparison of different electromagnetic vibration spectrum field models that can be applied to WiFi electromagnetic vibration spectrum field propagation together with the measurement results [6]. Kumar P. et al are very useful in studying electromagnetic vibration spectrum fields and non-ionization effects on the human body.…”

Desenvolvimento de sensor baseado em IoT para monitoramento contínuo das propriedades do concreto moldado in loco.

“…A partir dos modelos de simulação disponíveis pode-se verificar que fatores como intensidade do sinal na distância de referência (geralmente medida a 1m , 2001;HASHEMI, 1993;LIPINSKI;LEPLAWY, 2019;MORA et al, 2006;REN et al, 2020;ZAFARI;GKELIAS;LEUNG, 2019).…”