Wyniki wyszukiwania dla: PATH LOSS MODELLING

• Path Loss Modelling for Location Service Applications

  Publikacja

  • S. J. Ambroziak
  • R. Katulski
  • J. Sadowski
  • J. Stefański

  - Rok 2013

  The aim of this paper is the path loss modeling for the radiolocation services in radiocommunication networks, particularly in cellular networks. The main results of the measurements obtained in the physical layer of the UMTS are introduced. A new method for the utilization of the multipath propagation phenomenon to improve the estimation of the distance between the mobile station (MS) and the base station (BS) is outlined. This...

• Path Loss Modelling in the Untypical Outdoor Propagation Environments

  Publikacja

  • S. J. Ambroziak
  • R. Katulski

  - Rok 2014

  In the paper three ways of path loss modelling in the untypical outdoor environments are presented. The exemplary untypical outdoor environment is analyzed. The investigated environment is characterized, and the measurement campaign are shortly described. The following models have been analyzed: the COST231 Walfisch-Ikegami model, the modified COST231Walfisch-Ikegami model tuned on the basis of empirical data, and the empirical...

• Propagation Path Loss Modelling in Container Terminal Environment

  Publikacja

  • S. J. Ambroziak
  • R. Katulski
  • J. Sadowski
  • J. Stefański

  - Rok 2011

  Pełny tekst do pobrania w serwisie zewnętrznym

• Performance Evaluation of GAM in Off-Body Path Loss Modelling for Body Area Networks

  Publikacja

  • M. Laskowski
  • S. J. Ambroziak
  • L. M. Correia
  • K. Świder

  - Rok 2021

  This paper addresses the performance evaluation of an off-body path loss model, based on measurements at 2.45 GHz, which has been developed with the use of the Generalised Additive Model, allowing to model a non-linear dependence on different predictor variables. The model formulates path loss as a function of distance, antennas’ heights, antenna orientation angle and polarisation, results showing that performance is very sensitive...

  Pełny tekst do pobrania w portalu

• Propagation Path Loss Modeling in Container Terminal Environment

  Publikacja

  • R. Katulski
  • J. Stefański
  • J. Sadowski

  - Journal of Telecommunications and Information Technology - Rok 2009

  This paper describes novel method of path loss modeling for radio communication channels in container port area. Multi-variate empirical model is presented, based on multidimensional regression analysis of real path loss measurements from container terminal environment. The measurement instruments used in propagation studies in port area are also described.

  Pełny tekst do pobrania w portalu

• Path Loss Analysis in Off-Body Channels in Indoor Environment

  Publikacja

  • S. J. Ambroziak
  • L. M. Correia
  • R. Katulski
  • M. Maćkowiak

  - Rok 2015

  This temporary document describes an analysis of path loss in off-body channels in an indoor environment. The influence of body orientation and on-body antenna placement on path loss in off-body communications as well as of different bodies has been investigated. Five static scenarios, six distances between body and antenna and eight body orientations were analysed; moreover, two dynamic scenarios were investigated. The smallest...

• Measurements of Path Loss in Off-Body Channels in Indoor Environments

  Publikacja

  • S. J. Ambroziak
  • M. Maćkowiak
  • R. Katulski
  • J. Sadowski
  • L. M. Correia

  - Rok 2014

  This paper presents a measurements of the path loss for validation of a statistical model for off-body radio channels in an indoor multipath environment, which considers the distance dependent mean path loss, and describes body shadowing and fast fading components in a statistical way. The measurement equipment and propagation indoor environment have been presented. Two different bodies and five static and two walking scenarios...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Measurements of Path Loss in Off-Body Channels in Indoor Environments

  Publikacja

  • S. J. Ambroziak
  • L. M. Correia
  • R. Katulski
  • M. Maćkowiak

  - Rok 2015

  The main goal of the paper is to investigate the influence of body orientation and on-body antenna placement on the path loss in off-body communications. In addition, the influence of different bodies is analysed.

• Path Loss Analysis for the IoT Applications in the Urban and Indoor Environments

  Publikacja

  • P. Rajchowski
  • J. Sadowski
  • O. Błaszkiewicz
  • K. Cwalina
  • A. Olejniczak

  - Rok 2020

  The Internet of Things (IoT) networks concept implies their presence in a various and untypical locations, usually with a disturbed radio signals propagation. In the presented paper an investigation of an additional path loss observed in an underground environment was described. The proposed measurement locations correspond to the operation areas of rapidly growing narrowband IoT (NBIoT) networks, the ones using the Long Term Evolution...

  Pełny tekst do pobrania w serwisie zewnętrznym

• Path Loss Measurements in Wideband Radio Link Designed for Maritime Environment

  Publikacja

  • P. Rajchowski
  • K. Cwalina
  • P. T. Kosz
  • J. Stefański
  • J. Sadowski

  - Rok 2018

  In the article, the research and analysis of path loss in designed and evaluated digital radio link for high-speed data transmission in maritime environment is presented. Collected samples of received signal were used to determine the mean path loss and its standard deviation. Measuring campaign was carried out in a real maritime conditions. The mean value of path loss reached 126 dB on a distance of 11.16 km.