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Empirical formula for propagation loss in land mobile radio services

✍ Scribed by Hata, M.


Book ID
115543279
Publisher
IEEE
Year
1980
Tongue
English
Weight
510 KB
Volume
29
Category
Article
ISSN
0018-9545

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✦ Synopsis


An empirical formula for propagation loss is derived from Okumura's report in order to put his propagation prediction method to computational use. The propagation loss in an urban area is presented in a simple form: A + B log R, where A and B are frequency and antenna beight functions and R is the distance. The i a t r o d d formula is applicable to system designs for UHF and VHF land mobile rpdio ~enices, with a d formulation error, under the foUowing conditiom: frequency range 100-1500 MHz, distaace 1-20 km, base station antenna height 30-2@0 m, and vehicular antenna height 1-10 m.


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## Abstract This paper presents a new model for propagation‐loss prediction in indoor mobile communications. It uses the free‐space loss model added to an empiric function (based on the PadΓ© approximant), and a term that describes the signal randomness (typical of the RF propagation). In order to v