Path Loss Prediction Formula in Urban Area for the Fourth-Generation Mobile Communication Systems

Koshiro KITAO  Shinichi ICHITSUBO  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.6   pp.1999-2009
Publication Date: 2008/06/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.6.1999
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antennas and Propagation
mobile radio,  path loss,  the fourth-generation mobile communication systems,  microcell,  

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A site-general type prediction formula is created based on the measurement results in an urban area in Japan assuming that the prediction frequency range required for Fourth -- Generation (4G) Mobile Communication Systems is from 3 to 6 GHz, the distance range is 0.1 to 3 km, and the base station (BS) height range is from 10 to 100 m. Based on the measurement results, the path loss (dB) is found to be proportional to the logarithm of the distance (m), the logarithm of the BS height (m), and the logarithm of the frequency (GHz). Furthermore, we examine the extension of existing formulae such as the Okumura -- Hata, Walfisch -- Ikegami, and Sakagami formulae for 4G systems and propose a prediction formula based on the Extended Sakagami formula.