Results 291 to 300 of about 2,209,550 (335)

Path loss model for crowd counting

2017 7th IEEE International Conference on Control System, Computing and Engineering (ICCSCE), 2017
Crowd counting using wireless sensing relies on either participatory or non-participatory methods. In both cases, the algorithm developed would predict the number of people or their density within the area monitored, for the purpose of crowd safety and management. An alternative to such approaches is the path loss modeling. A model is proposed to count
Solahuddin Yusuf Fadhlullah, Widad Ismail   +1 more
openaire   +1 more source

D-band indoor path loss measurements

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014
This paper presents the path loss measurements of 110 to 170 GHz indoor wireless channels. The measurements are performed in line-of-sight (LoS) and obstructed-line-of-sight (OLoS) environments. The results show that the measured path loss is in good agreement with the theoretically predicted path loss.
Wasif T. Khan, Seunghwan Kim, Alenka Zajic, John Papapolymerou   +3 more
openaire   +1 more source

Wireless signal propagation path loss estimation

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014
In this work, the power of the wireless interference received by the victim communication system in the spectrum-sharing scenario between two wireless communication systems is investigated. The path loss models are detailed, and simulation results are given. The interference analysis is important for successive interference mitigation processing, which
Zhe Geng, Hai Deng
openaire   +1 more source

Path loss revisited using computer simulation

2009 IEEE International Conference on Systems, Man and Cybernetics, 2009
In this paper, we propose a computer simulation model for the study of the large-scale effects on narrowband wireless transmission systems. The development of the path loss model is based on the ray tracing technique. This study concentrates on the first-order scattering effects, namely each multipath signal is a two-hop signal that involves a single ...
Hung Huy Khong, Bing W. Kwan, Leonard J. Tung   +2 more
openaire   +1 more source

Path-loss prediction model for microcells

IEEE Transactions on Vehicular Technology, 1999
Empirical path-loss formulas for microcells in low-rise and high-rise environments are established from measurements conducted in the San Francisco Bay area. Using the 1-km intercepts and slope indexes of the least square fit lines to the measurements at cellular and personal communication services (PCS) frequencies for three base station heights ...
D. Har, H.H. Xia, H.L. Bertoni
openaire   +1 more source

Path-Loss Measuring Techniques and Equipment

IEEE Transactions on Communications, 1960
The planning of tropospheric scatter communication systems requires precise and reliable knowledge of the path loss. This paper describes the techniques and equipment used to evaluate proposed installations. The equipment operates in the frequency range of 875 to 940 or 1650 to 1950 mc with output powers of 10 or 100 watts.
J. Polyzou, M. Sassler
openaire   +1 more source

Ensembling Probabilistic Regressors for Path Loss Prediction

Proceedings of the 4th URSI Atlantic RadioScience Conference – AT-RASC 2024
Machine Learning (ML) based Path Loss (PL) prediction is of great importance when designing modern communications networks. As a result of providing a framework for understanding what learning entails, probabilistic modeling has become one of the most prominent theoretical and practical methods for developing machines that acquire knowledge from ...
Sotiroudis, Sotirios, Zaharis, Zaharias, Rekkas, Vasileios, Iliadis, Lazaros Alexios, Christodoulou, Christos, Goudos, Sotirios   +5 more
openaire   +1 more source

A Meaningful Indoor Path-Loss Formula

IEEE Antennas and Wireless Propagation Letters, 2013
A simple indoor path-loss formula is proposed that is both simple and physically sound, as it accounts for major propagation processes taking place in indoor environment: namely wave-divergence and obstruction. The formula is shown to well reproduce the path-loss versus distance trend in different indoor environments.
DEGLI ESPOSTI, VITTORIO, FALCIASECCA, GABRIELE, FUSCHINI, FRANCO, VITUCCI, ENRICO MARIA   +3 more
openaire   +2 more sources

Carrier Frequency Effects on Path Loss

2006 IEEE 63rd Vehicular Technology Conference, 2006
To study the carrier frequency effects on path loss, measurements have been conducted at four discrete frequencies in the range 460-5100 MHz. The transmitter was placed on the roof of a 36 meters tall building and the receive antennas were placed on the roof of a van. Both urban and suburban areas were included in the measurement campaign.
M. Riback, J. Medbo, J.-E. Berg, F. Harrysson, H. Asplund   +4 more
openaire   +1 more source

Millimeter waves channel measurements and path loss models

2012 IEEE International Conference on Communications (ICC), 2012
This paper describes a measurement campaign performed in a modern building at the University of L'Aquila, Italy. Measurements are taken for two large bands around 60 GHz, i.e. 54–59 and 61–66 GHz. The channel probe is an ultrawideband (UWB) PN-sequence signal having a bandwidth of 1.2 GHz, which is up-converted to the 60 GHz band and finely tuned in ...
Piersanti S, Annoni L. A, CASSIOLI, DAJANA   +2 more
openaire   +1 more source