Measurements and Models for the Wireless Channel in a Ground-Based Urban

William F. Young, Kate A. Remley

ISBN 10: 0364099550 / ISBN 13: 9780364099551

Editore: Forgotten Books, 2024

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Print on Demand. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book.

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Dati bibliografici

• Titolo: Measurements and Models for the Wireless Channel in a Ground-Based Urban
• Editore: Forgotten Books
• Data di pubblicazione: 2024
• Lingua: Inglese
• ISBN 10: 0364099550
• ISBN 13: 9780364099551
• Rilegatura: Paperback
• Condizione: New
• Tipo di libro: print-on-demand item
• Cataloghi dei venditori:
  • Electronics

Descrizione articolo

Riassunto

Excerpt from Measurements and Models for the Wireless Channel in a Ground-Based Urban Setting in Two Public Safety Frequency Bands

This is another in a series of nist technical notes (tn) on propagation of radio signals for emergency-responder communications. Previous technical notes investigated propagation into large building structures (an apartment complex, hotel, office building, sports stadium, shopping mall, etc). Three nist Tech Notes (nist TN 1540, nist TN 1541, and nist TN 1542) described experiments related to radio propagation in a structure before, during, and after implosion. Two subsequent Tech Notes (nist TN 1545 and nist TN 1546) focused exclusively on RF propagation into large buildings, without implosion. Those reports were intended to give emergency responders and system designers a better understanding of what to expect from the radio-propagation environment in disaster situations. The overall goal of this project is to create a large, public-domain data set describing the attenuation and variability of radio signals in various building types and environments in the public safety frequency bands. These studies were funded by the nist Public Safety Research Laboratory within the Office of Law Enforcement Standards.

Because the Federal Communications Commission (fcc) has recently opened the spectrum between 764 mhz and_776 mhz for public safety applications, additional measurements were carried out in the 750 mhz frequency band in a dense urban environment (sometimes called an urban We also conducted measurements in this urban environment in the 4900 mhz public safety band (4940 mhz to 4990 mhz represents another licensed public safety band). These measurements were all ground-to-ground with transmitters and receivers at ground level and pedestrian-height antennas to mimic communications between an incident command post and a responder on foot.

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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.