Results 11 to 20 of about 251,819 (258)

Model for the Path Loss of In-Room Reverberant Channels [PDF]

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
A general path loss model for in-room radio channels is proposed. The model is based on experimental observations of the behavior of the delay power spectrum in closed rooms. In a given closed room, the early part of the spectrum observed at different positions typically consists of a dominant component (peak) that vanishes as the transmitter-receiver ...
Gerhard Steinböck, Troels Pedersen, Bernard H. Fleury, Wei Wang 0026, Thomas Jost, Ronald Raulefs   +5 more
openaire   +3 more sources

Path Loss Modeling for Vehicle-to-Vehicle Communications [PDF]

IEEE Transactions on Vehicular Technology, 2011
Vehicle-to-vehicle (V2V) communications have received increasing attention lately, but there is a lack of reported results regarding important quantities such as path loss. This paper presents parameterized path loss models for V2V communications based on extensive sets of measurement data collected mainly under line-of-sight conditions in four ...
Johan Karedal, Nicolai Czink, Alexander Paier, Fredrik Tufvesson, Andreas F. Molisch   +4 more
openaire   +2 more sources

Path loss models based on stochastic rays [PDF]

IET Microwaves, Antennas & Propagation, 2007
In this paper, two-dimensional percolation lattices are applied to describe wireless propagation environment, and stochastic rays are employed to model the trajectories of radio waves. We first derive the probability that a stochastic ray undergoes certain number of collisions at a specific spatial location.
Luoquan Hu, Han Yu, Yifan Chen
openaire   +2 more sources

On the Mobility Effect in UAV-Mounted Absorbing Metasurfaces: A Theoretical and Experimental Study

IEEE Access, 2023
In this work, we focus on the theoretical modeling and experimental evaluation of absorbing metasurfaces mounted on unmanned aerial vehicles (UAVs) as facilitators for secure wireless communication channels.
Alexandros Pitilakis, Dimitrios Tyrovolas, Prodromos-Vasileios Mekikis, Sotiris A. Tegos, Alexandros Papadopoulos, Ageliki Tsioliaridou, Odysseas Tsilipakos, Dionysios Manessis, Sotiris Ioannidis, Nikolaos V. Kantartzis, Ian F. Akyildiz, Christos K. Liaskos   +11 more
doaj   +1 more source

Analysis of Different Path Loss Propagation Models Based on 4G Walk Test Data [PDF]

Journal of Information Technology Management, 2022
The study of path loss propagation is of high importance in telecommunication, for optimizing the efficiency of wireless communication networks. In this paper, four path loss propagation models; free space path loss (FSPL) model, Okumura model, Okumura ...
Stella Ifeoma Orakwue, Hamza Mohammed Ridha Al-Khafaji   +1 more
doaj   +1 more source

Extended Weighted ABG: A Robust Non-Linear ABG-Based Approach for Optimal Combination of ABG Path-Loss Propagation Models

IEEE Access, 2022
This paper proposes a robust non-linear generalized path-loss propagation model, the Extended Weighted ABG (EWABG), which efficiently allows generating a path-loss propagation model by combining several available path-loss datasets (from measurements ...
David Casillas-Perez, Daniel Merino-Perez, Silvia Jimenez-Fernandez, Jose A. Portilla-Figueras, Sancho Salcedo-Sanz   +4 more
doaj   +1 more source

Path loss modelling based on path profile in urban propagation environments [PDF]

IET Communications, 2022
Abstract This paper presents a path loss model based on path profile in urban propagation environments for 5G systems. Although deep learning approaches are indeed powerful in tasks involving prediction or classification, they often lack transparency and suffer from high computational complexity.
openaire   +1 more source

Modeling In vivo Wireless Path Loss

CoRR, 2014
Our long-term research goal is to model the in vivo wireless channel. As a first step towards this goal, in this paper we performed in vivo path loss measurements at 2.4GHz and make a comparison with free space path loss. We calculate the path loss by using the electric field radiated by a Hertzian-Dipole located inside the abdominal cavity.
Yang Liu 0067, Thomas P. Ketterl, Gabriel E. Arrobo, Richard D. Gitlin   +3 more
openaire   +2 more sources

Path Loss Prediction Based on Machine Learning Techniques: Principal Component Analysis, Artificial Neural Network, and Gaussian Process

Sensors, 2020
Although various linear log-distance path loss models have been developed for wireless sensor networks, advanced models are required to more accurately and flexibly represent the path loss for complex environments.
Han-Shin Jo, Chanshin Park, Eunhyoung Lee, Haing Kun Choi, Jaedon Park   +4 more
doaj   +1 more source

Path loss measurement and modeling of 5G network in emergency indoor stairwell at 3.7 and 28 GHz.

PLoS ONE, 2023
Research on path loss in indoor stairwells for 5G networks is currently insufficient. However, the study of path loss in indoor staircases is essential for managing network traffic quality under typical and emergency conditions and for localization ...
Md Abdus Samad, Dong-You Choi, Kwonhue Choi   +2 more
doaj   +1 more source