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Directional Measurements and Propagation Models at 28 GHz for Reliable Factory Coverage.

Directional Measurements and Propagation Models at 28 GHz for Reliable Factory Coverage.

Authors :
Chizhik, Dmitry
Du, Jinfeng
Valenzuela, Reinaldo A.
Samardzija, Dragan
Kucera, Stepan
Kozlov, Dmitry
Fuchs, Rolf
Otterbach, Juergen
Koppenborg, Johannes
Baracca, Paolo
Doll, Mark
Rodriguez, Ignacio
Feick, Rodolfo
Rodriguez, Mauricio
Source :
IEEE Transactions on Antennas & Propagation; Oct2022, Vol. 70 Issue 10, p9596-9606, 11p
Publication Year :
2022

Abstract

Directional measurements of over 2600 links in four distinct factories at 28 GHz are used to formulate the path gain and azimuth gain models to allow reliable 90% coverage estimates. A simple theoretical model of path gain, dependent on ceiling and clutter heights, is found to represent path gain across the four factories with 4.4 dB root-mean-square error (RMSE), contrasted with 6.9 dB slope-intercept fit and 8.5–14.9 dB RMSE for 3GPP factory models. The model also did well against 3.5 GHz path loss data collected over 18 MHz bandwidth in one of the factories, with an RMSE of 3.3 dB. In nonline-of-sight (NLOS) conditions, scattering reduces available antenna azimuth gain from nominal value by up to 7.3 dB in 90% of links. Line-of-sight (LOS) blockage by a 1.7 m × 1 m obstacle in factory aisle leads to 7 dB signal reduction, attributed to availability of other paths. It is found that an access point (AP) using 25 dBm transmit power per polarization, with 23 dBi nominal gain and omnidirectional terminals, supporting $2\times $ 2 MIMO in a 400 MHz bandwidth, can provide 130 Mb/s for 90% of factory locations within 50 m. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0018926X
Volume :
70
Issue :
10
Database :
Complementary Index
Journal :
IEEE Transactions on Antennas & Propagation
Publication Type :
Academic Journal
Accession number :
160621258
Full Text :
https://doi.org/10.1109/TAP.2022.3177546